Window & Facade Magazine - January/February 2018 issue

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www.wfm.co.in Volume 4 | Issue 3 | ` 150 January - February 2018

BUILDING ENVELOPES An Integrated Approach

FACE TO FACE WITH ARCHITECT HAFEEZ CONTRACTOR

Green Talk

Living Wall: Creating Greenery Over a Faรงade

Tech Talk

Glass Selection for Efficient Faรงade Design

Industry Speaks

Navin Keswani Founder and CMD, Aluplex India Private Limited

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Volume 4 I Issue 3 January - February 2018 PUBLISHED BY F & F Media and Publications Pvt. Ltd. C-55, Okhla Industrial Area, Phase - 1, New Delhi-110 020 T: +91-11-40623356 CO-FOUNDERS Syed Ahad Ahmed Amit Malhotra TECHNICAL PANEL Mahesh Arumugam Director Meinhardt Façade Consultants KR Suresh Regional Director xis Façade Consulting A EDITORIAL Renu Rajaram renu@wfm.co.in +91 9312864830

10

Living Wall: Creating Greenery Over a Façade

Pradeep Barpande, Director, Ecogreen Landscape Technologies India Pvt. Ltd.

20

Enhanced Structural Integrity of Laminated Glass Balustrades

Malvinder Singh Rooprai,Technical Consultant, (AP Region) PVB Division, Kuraray India Pvt. Ltd.; Ingo Stelzer, Manager, Global Technical Consultancy, Kuraray Europe GmbH

26

Making of Omkar 1973 – Façade Perspective

Arshad Khan, Asst. Vice President – Façade, Omkar Realtors &Developers Pvt Ltd.

32

Glass Selection for Efficient Façade Design

Neeraj Sharma, Assistant Manager,Design2occupancyServices LLP

42

Designing Efficient & Optimal Facades and Fenestration

Robert Höllrigl, Executive Director-R&D, Encraft India

46

Cover Story

Building Envelopes: An Integrated Approach

70

Face to Face

Interview: Ar. Hafeez Contractor, Founder and Principal Architect, Architect Hafeez Contractor

88

Industry Speaks

Interview: Navin Keswani, Founder and CMD, Aluplex India Private Limited

101

Façade Design Approach for Healthcare Projects

National Cancer Institute, Nagpur by Hiten Sethi & Associates

110

The Falling Lotus Blossoms

Eon IT Park, Pune by Form 4 Architecture

Mukesh Kumar mukesh@wfm.co.in +91 9560088995

118

Striking Urban Façades

Projects by aCTa

DESIGN & CONCEPT BY: Vermmillion Communication Pvt. Ltd.

126

Post Event Report

UWDMA-Vision 2020’ Meeting in Goa

Potshangbam July july@wfm.co.in MARKETING & OPERATIONS Kapil Girotra kapil@wfm.co.in +91 9560925255 SUBSCRIPTION & CIRCULATION Jasmeen Kour jasmeen@wfm.co.in +91 9871151112

RNI: DELENG/2014/57870

Cover Courtesy: Architect Hafeez Contractor

DISCLAIMER: With regret we wish to say that publishers cannot be held responsible or liable for error or omission contained in this publication. The opinions and views contained in this publication are not necessarily those of the publishers. Readers are advised to seek expert advice before acting on any information contained in this publication which are very generic in nature. The Magazine does not accept responsibility for the accuracy of claims made by advertisers. The ownership of trademarks is acknowledged. No part of this publication or any part of the contents thereof may be reproduced in any form or context without the permission of publishers in writing.

WRITE TO THE EDITOR Please address your suggestions to: The Editor, Window & Façade Magazine, C55, Okhla Industrial Area, Phase – 1, New Delhi, 110020 or email renu@wfm.co.in. Please provide your full name and address, stating clearly if you do not wish us to print them. Alternatively log on to www.wfm.co.in and air your views. The opinions expressed in this section are of particular individuals and are in no way a reflection of the publisher’s views.

“Printed and Published by Amit Malhotra on behalf of M/s F & F Media and Publications Pvt.Ltd. Printed and published at EIH Limited- Unit Printing Press, Manesar Haryana-122050. Name of the Editor-Ms. Renu Rajaram”

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EDITOR’s Note The real estate sector sees Union Budget 2018 as a balanced one with focus on affordable housing. The finance minister Arun Jaitely’s recently announcement of dedicated fund for the sector could be seen as a booster, though the sector was expecting some big ticket announcements to revive it. But we see some strengthening in affordable housing, which is essential considering the need for housing the 1.2 billion population which soon will swell to 1.5 billion. To maintain a balance between increasing population and limited land resources, promotion of high density affordable housing projects in urban cities is a must.

We had a wonderful opportunity to interact with the ‘icon of architects’, none other than Ar. Hafeez Contractor, who has been researching and conceptualising ways that can positively impact the urban environment. His most important concern is the change in the environment because of the chaotic urban development. Expressing his worries on this topic, he strongly advocated the need for vertical and compact cities for judicious land use, lesser intercity travel and quality of life. Surprisingly the ‘Starchitect’ is not backing the Government’s ideas for creating 100 Smart Cities. “Instead of discussing 100 smart cities, we must go only for three large mega cities. We need to plan for denser cities, which could accommodate say 30 or 40 million people in locations closer to the existing cities, where there is ample water, power, food and useless non-agricultural land to build. The non-agricultural land could be used for intense, dense developments, so that there is less dependency on any kind of transportation,” he said, apprising on what the correct approach should be. Read this eminent architect’s interview in this edition to know more about his modernistic approach to sustainability, vision for the future building materials and designs, views regarding future cities and the right approach to design them. A few things noticeable is quick explanations of his thoughts through sketches, which amazed me. More awe-inspiring was his vibrant energy and tireless devotion to work with never-say-die attitude.

There is much to learn from this edition, right from the methods to choose glass for facades and fenestration to designing and maintenance of green walls. I encourage you to take time to read the articles and write to us with your feedback.

Thanks, as always, for your support.

Renu Rajaram renu@wfm.co.in Jan - Feb 2018 WFM 7

GREEN TALK

LIVING WALL: CREATING GREENERY OVER A FAÇADE About the Author: Pradeep Barpande started his venture into greenery back in 1986. Pradeep has over 30 years of expertise in the nursery, soft-scape, large tree transplantation, soil reclamation, soil stabilisation, light weight gardening, green roofs, vertical gardens, sensor-based automation of irrigation with remote monitoring, high-rise greenery, urban farming and now vertical farming.

Pradeep and Anuradha Barpande are the directors of Ecogreen Landscape Technologies India Pvt. Ltd, which specialises in the field of research, experiment, development, manufacturing, growing, installing and maintaining of vertical gardening systems & non-conventional greeneries.

Currently, they are working in India, Malaysia, Bahrain and export their products to a few more countries.

Pradeep Barpande Director, Ecogreen Landscape Technologies India Pvt. Ltd.

façades as well. A well designed and constructed vegetated façade can provide a thick layer of greenery that is aesthetically pleasing, can act as a thermal insulator and provide a habitat for fauna.

Vertical gardens have various names in the industry, namely living wall, bio wall, green wall, vegetated wall, breathing walls and so on, depending on their individual brands.

Greenery over the façade - Gigaplex IT Park, Airoli, Navi Mumbai

In recent years, vertical gardens have become a favourite among those who wish for lush green surrounding but are faced with space restrictions.

Vertical gardens are not limited to barren outdoor walls or indoor spaces but have come to include

10 WFM Jan - Feb 2018

Creating greenery over a façade is a task that requires certain elements of engineering, architecture, horticulture and irrigation. Selecting the right vertical garden system is a crucial step in the installation of a green façade, and is undertaken by a team of experts after considering a number of factors like load bearing capacity, climatic conditions, etc.

Engineers design the structure taking into account the dead load of the vertical gardening system and the wind load on it with reference to local climatic data. Architects design the space for the vegetation, select plants that satisfy horticultural limitations

perfecting the system of hydrology, which mainly includes irrigation and drainage. Vertical vegetation demands a carefully designed, automated watering system that is either time-based or is interactive wherein different sensors, valves and pumps communicate with each other and perform necessary actions. Controlling water pressure is also a key component within vertical garden irrigation systems. Optimal performance of vegetated façades depends greatly on sincere as well as scientific maintenance service. The maintenance team has to work proactively as the impression of the building decor depends largely on the status of vegetation over the façade.

Selecting the right vertical garden system is a crucial step in the installation of a green façade

and design access routes for maintenance purposes.

Horticulture specialists suggest plant palettes after considering the climate, microclimate, direction of vegetation and seasonal variations.

A planting plan for a vertical garden is developed after taking into account plant sustainability, growth pattern, exposure to environmental forces, maintenance requirements as well as a plant’s ornamental value. Working with plants requires

The main difference between vertical garden systems and growing vertical greenery is that the plants are rooted and grown over the vertical surface itself and not in planters at the bottom of the surface or as climbers on mechanical structures. In order to grow these plants, a variety of systems can be implemented namely, panel, box, pot, tray, fabric, trellis and suspended (hanging green wall) system.

Each of these has a unique set of requirements and produce unique results. Some of these give good vegetation cover on one side while some provide greenery on both sides. They are either mounted on the vertical surface or on some kind of structure or

Optimal performance of vegetated façades depends greatly on sincere as well as scientific maintenance service

12 WFM Jan - Feb 2018

and maintenance of vertical gardens. These gardens are challenged by gravity and thus, the majority of the times the planting is required to be lightweight and shallow. Additionally, seasonal variations along with the height and scale of the garden greatly influence the intensity and duration of light each plant receives. A simple way to counteract these challenges is to introduce modern technologies like artificial lights, mechanical anchors, water reservoirs, thermal insulating media, etc.

Creating greenery over a façade is a task that requires certain elements of engineering, architecture, horticulture and irrigation

are hanging and are installed on wire ropes. Some of them are modular systems, while others are not and a few can be uninstalled and reinstalled multiple times. The materials used also vary, but mainly include plastic, metal and fabric. A few of these systems perform seasonally as the planting cavities are not designed for permanent use.

There are a few challenges to consider in the execution

Sustainability in terms of design, materials and construction is also an important factor to consider when discussing vegetated façades in India. A well designed and carefully built vertical garden system has a number of requisites. Firstly, the module should be strong and long lasting with an elaborate irrigation system embedded within the module as well as the system. An automated irrigation system, one that relies on time and sensors, is necessary as it reduces water wastage and maintenance costs and risks. Secondly, the growth medium should support the growth of white roots at the beginning and in the long run. The longevity of the growth medium is also important to avoid replenishments. For this purpose, young biomass is avoided and the use of clay or soil as it can threaten the drainage system in the long run. Additionally, the growth medium recipe

The main difference between vertical garden systems and growing vertical greenery is that the plants are rooted and grown over the vertical surface itself and not in planters at the bottom of the surface or as climbers on mechanical structures.

Jan - Feb 2018 WFM  13

Sustainability in terms of design, material and construction is also an important factor to consider when discussing vegetated façades

should sustain and protect the plant root-zone from high temperatures. Thirdly, the system should be designed to withstand high wind pressures, positive and negative wind loads, vibrations and shocks and changing climatic conditions. The ratio of green area coverage to surface exposure to environmental forces should be optimum. Lastly, the success of vertical greenery depends upon the right plants, hence expertise in the matter is a must. Plants should

A project for ONGC showcasing vegetated facades

14 WFM Jan - Feb 2018

Aesthetically designed living wall at the Reliance centre

be selected after considering plant sustenance and performance with respect to climatic zone, light intensity, humidity, temperature, air-conditioned environments, wind velocity, salt spray, pollution and other factors. The growth and anchorage of roots are extremely important for the vertical garden to be a success and hence should be monitored carefully after plant selection.

CASE STUDY

THE GREEN FAÇADE HDFC Ltd., Mumbai

The HDFC green façade

The HDFC green façade is a unique design where a green wall has been introduced in the courtyard of a seven-storey building at BackBay Reclamation, Mumbai. The green wall rests on a curved fabricated structure which measures 9.1 m wide x 21m high. The fabrication structure, made of hot dipped galvanised MS, is a stand-alone type of design and is anchored in RCC members. The dead-load of the vertical garden along with vegetation and fully saturated water is approximately 91.50 kg/sq m.

The living wall plant modules utilised in this green façade were grown in the ELT facility at Pune from July 2013. The horizontal members and drains were produced and installed on the fabricated structure in a span of twelve days. Pre-grown modules were transported to the site once the site was clear of dust, paint, fumes, smoke and other hazardous

16 WFM Jan - Feb 2018

conditions that could potentially damage the modules. The installation was complete within seven days on site.

Some of the challenges we faced and successfully resolved were as follows:  For the high-rise installation in the courtyard, six different contractors were working simultaneously within a given timeline. Maximum work was carried out off-site and systematic planning and support from PMC team made it achievable.  All materials were lifted by head-loads due to the site being an enclosed courtyard and arrangements for a lift, hydraulic platform or a cherry-picker was not possible. A pulley and rope system, with a specially designed anchor, was introduced to lift the planted modules to the

Fabrication stage











required height while ensuring no damage was done to the plants.

The selection and performance of an irrigation system for the green wall was crucial since access for maintenance was restricted to merely two to four times a month and any failure of the irrigation system could damage plants enormously.

The light intensity varied from 350 lux to 45,000 lux and taking into consideration seasonal variations, selecting the right plants was a challenge. The three zones of light intensity were no direct sunlight throughout year (45 percent); sunlight during a few months of the year (35 percent) and sunlight throughout the year (20 percent).

Once the landscape designer decided on the general idea and concept for planting, free hand was given to choose the arrangement of the plants. Then, the plant mix for each area was decided and the plants were transported in batches.

The green wall, located in the courtyard, could be viewed from multiple sides of the building. The HDFC senior management occupied offices in the same building. Hence, all-round performance of the green wall was very important. Thus, preventive measures were taken and the on-site nursery was equipped with an extra stock of 150 modules of the living wall. Additionally, right amount of feeding and timely pruning was the strategy employed.

A cradle to access green wall was introduced that could also be utilised for cleaning the glass and other members of the façade.

The strategy, planning and execution have ensured the success of the green façade for almost four years and made it the talk of the town!

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Installation stage

The green wall immediately after installation

QUICK FACTS Project: HDFC Ltd. Location: Mumbai Client: HDFC Ltd. Architect: Hafeez Contractor Landscape Consultant: Ms. Kavita Shrivastav Green Wall Consultant: Ecogreen Landscape Technologies India Pvt. Ltd. Materials used for Vegetated Façade: ELT Living Wall System Commencement Date: July 2013 Completion Date: September 2013

ARCHITECTURAL SYSTEMS

ENHANCED STRUCTURAL INTEGRITY OF LAMINATED GLASS BALUSTRADES About the Authors: Malvinder Singh Rooprai (GLS Consulting Specialist - Asia Pacific Region, Kuraray India) works on finite element modelling of laminated glass for analysing the effects of viscoelastic behaviour of polymeric interlayers on the structural performance of laminated glass panels in architectural applications. He has provided consulting reports on structural performance of laminated glass to architects, façade engineers and structural consultants on some of the mega projects in the region like Shanghai Tower in China and World One in Mumbai.

Ingo Stelzer has more than 17 years of professional experience in glass structure & facade engineering. He is a specialist for design & manufacturing of complex glass & laminate constructions. He joined Kuraray in 2014 and is heading the global consultancy team at present.

Glass balustrades are a common application of laminated glass, wherein the glass panel acts as a structural member that is required to sustain lateral design loads as stipulated by building regulations.

Rising awareness about safety related to glass usage instigated by accidents due to human impact is the driving factor for evolution of safety regulations for usage of glass in a building. Singapore building authorities look for a solution that complies with the most stringent safety criteria, limiting the induced deflection in a free standing balustrade, in “all layers broken” condition to a limit that is deemed to be safe against “fall through”. Live load testing of a balustrade, laminated with Ionomer interlayer, was done with a leading railing system supplier.

The test concluded that the glass balustrade can be designed for sustaining the design loads, not only in “pre-breakage” but also for “post breakage” condition, thus providing a very high redundancy in balustrade design.

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Malvinder Singh Rooprai, Technical Consultant, (AP Region) PVB Division, Kuraray India Pvt. Ltd. Ingo Stelzer, Manager, Global Technical Consultancy, Kuraray Europe GmbH

INTRODUCTION A balustrade can be defined as a system designed to keep people from (in most cases unintentionally) straying into dangerous or ‘off-limit’ areas. Most public places are fitted with guard rails as protection against accidental falls. Any abrupt change in elevation (where the higher portion is accessible) makes a fall possible. Due to this responsibility and liability, rails are placed to protect people using the premises. According to most of the building standards, railings are generally required where there is a drop of 30” or more.

There are many types of guard railings in a building, and are mandatory per the building codes in many circumstances. Railings along stairways are common, and balconies are also lined with them. The most common residential balustrade is usually a wood railing around the deck. However, nowadays glass is becoming more and more integral component of any

Fig. 1(a) Glass balustrade, supported only at the bottom edge. (Ref - 1)

Fig. 1(b) Glass balustrade with a protective top rail, supported only at the bottom edge

modern day building. As a result, glass balustrades open the view while still providing safety, as at the Grand Canyon Skywalk in USA. Depending on the support conditions, glass may act only as an infill material or as a structural component. Whenever glass acts as a structural component, it becomes necessary for the engineer to ensure a reasonably high degree of redundancy in the design. Fig. 1(a), (b) & (c) illustrate common types of balustrades where glass is acting as a structural component for sustaining the imposed lateral loads[1].

GLOBAL STANDARDS ON BALUSTRADES Major countries like USA, UK, Australia, Germany and EU have their relevant standards for design of balustrades. Others follow the criteria laid down by these countries or have their standards derived from them. All of these standards specify a minimum lateral imposed load that should be sustained by a balustrade and the desired performance when it is subjected to impact loads.

Fig.1 (c) Glass balustrade with a bolted/attached hand rail, supported only at the bottom edge

ASTM - E2353 – 06 The standard requires shot bag test, pendulum test, horizontal and vertical static load tests for the balustrades. The performance of the panel under impact is classified as follows: (i) Unbroken (ii) Broken & retained (iii) Broken & not retained The standard requires broken glass to be strong enough not to allow a spherical steel ball of diameter 75 mm when pushed with a force of 18 N.

AS 1288 – 2006

Fig. 2: Glass retention in balustrades

The Australian standard permits cantilevered balustrades that have an interlinking hand rail. The handrail is non-load-supporting, unless a panel breakage occurs, and is connected to adjacent panels of glass, or the building, where the adjacent panels are at least 1000 mm wide and three or more panels of glass form the balustrade. If anyone panel fails, Jan - Feb 2018 WFM  21

with a structural top-railing cap. For balustrades without top-cap a project specific approval and test scenario is required. Similar to Australia, the approval criteria depends on the project and local authority involved (could differ from one state to another).

BS 6180 – 2011

Fig. 3: Test set for the post breakage strength test

then the remaining panels and handrail are required to be capable of resisting the design load[2]. Building authorities in Australia permit “free standing” balustrades (without interlinking hand rails) only on a project by project basis, through an “Alternate Solution” per Building Code of Australia (BCA)-2015.

As per BCA 2016, the same is known as “Performance Solutions” that involves rigorous assessment methods[3]. Singapore too, has a similar regulation that bars “free standing” balustrades.

GERMAN TRAV GUIDELINE – 2003 Germany has its TRAV Guideline for balustrades. So far it does not allow cantilevered balustrades, or only

Depending on the type of occupancy of the building, the British Standard has requirements of sustaining below design loads for barriers 1. Uniform distributed loads of 0.5KN/m2, 1.0 KN/ m2& 1.5 KN/m2 2. Linear live loads of 0.36 KN/m, 0.74 KN/m, 1.5 KN/m & 3.0 KN/m 3. Concentrated Live Loads of 0.25KN, 0.5 KN& 1.5 KN Additionally, the standard requires the glass to be Class A safety glass. However, there are no criteria for post breakage strength[4].

The review of the above important standards & building regulations conclude that Australia & Singapore in particular have a critical approach towards free standing balustrades without any interlinking hand rail. The approach highlights the concern of the authorities for human safety. Clearly, the intent of authorities is to ensure the highest safety level in post glass breakage scenario.

Fig. 4: Triple layer laminated glass balustrade with ionomer interlayer rigidly supported at the base

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Fig. 5: Sectional view of the test set up

POST BREAKAGE STRENGTH TEST FOR LAMINATED GLASS Does glass has a strength after it has broken? It all depends on what type of glass and interlayer has been chosen for laminate construction and its boundary conditions. A tempered glass laminate construction with PVB interlayers in a balustrade application may have the desired structural strength but has poor post breakage strength depicted by “blanket effect”. This justifies the safety concerns of building authorities in Australia & Singapore. Ionomer interlayers, rightly address this problem by not only enhancing the stiffness of the glass laminate construction but bring in additional benefits of a very high edge stability compared to standard PVB. Singapore building authorities look forward to elevating the balustrade safety standards by requiring the broken laminate construction, to resist the design live loads within a safe deflection limit of maximum 150 mm when a design load of 1.5 KN/m is applied with all glass layers broken. Clearly, no parallel can be drawn to such a high performance standard of glass balustrade.

In 2015, Kuraray attempted a post breakage strength test on a balustrade having a 2 x 12mm tempered glass laminated with 2.28 mm ionomer interlayer. The test was conducted at an ambient

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temperature of 33°C, at TUV Singapore. In the test, the broken tempered laminate construction provided sufficient post breakage strength against a “collapse”. However, the broken glass construction was not strong enough to meet the Building Construction Authority (BCA) of Singapore’s requirements as the top edge deflections far exceeded 150 mm when1.5 KN/m linear load was applied at the top edge. Although, this test was a failure, it provided two key learnings – 1. Tempered glass laminate does not have the required post breakage strength. 2. The base of the balustrade need to be made perfectly rigid to mitigate the base mobility issues observed in the built-up U Channel base holding the glass panel.

In 2016, Kuraray & Q Railings together, ventured out to develop a solution that meets the intents of not only the architects but the building authorities (BCA) as well in Singapore. The same test was repeated at at the in-house testing lab of Q Railings at Mumbai in India, which concluded that ionomer interlayers with heat strengthened laminated glass constructions can achieve a very high structural strength capable of safely resisting the design loads in post breakage condition too.

The U Channel base with Acrylonitrile Butadiene Styrene (ABS) Fixing Liner ensured a perfectly rigid base to the balustrade. The glass construction was

Table 1: Deflection measurements for 3 different specimens in pre breakage and post breakage condition Specimen No.

Max. deflection in the glass ( pre breakage condition) @1.5 KN/m

Specimen 1

44.0mm

Result @ 3.0 KN/m

@3.0KN/m (Proof Load) 64 mm

No breakage of glass

Max. deflection in the glass panel (post breakage condition) for 1.5 KN/m load.

56.0 mm

Specimen 2

49.6 mm

NA

Glass broke at 1.5 KN/m load

56.0 mm

Specimen 3

24.3 mm

69.6 mm

No breakage of glass

41.0 mm

also changed to a triple laminate construction made with heat strengthened glass instead of tempered glass, with a hope that the middle glass layer “interlocked” between outer glass layers would improve the post breakage strength.

Laminated Glass Construction Details – 8mm Heat Strengthened + 3.04 mm Ionomer Interlayer + 8mm Heat Strengthened + 3.04 mm Ionomer Interlayer + 8mm Heat Strengthened

TEST METHODOLOGY The glass panel was applied horizontal linear loads with hydraulic jack and load cell arrangements as shown in Fig 5. The entire test was conducted in an uncontrolled temperature (33-35°C) environment to ensure a linear load distribution, the load was applied at two locations at the top edge. The dial gauges for measuring the panel deflection at the top, centre and at the top of the rigid support were used. The load was gradually ramped up from zero to 1.5 KN/m. One specimen (Number 2) out of three had an unexpected breakage at 1.5 KN/m. Deflections were recorded for 1.5 KN/m and 3.0 KN/m load. The load was gradually

ramped up to ultimate load capacity of the panel.

Post to the breakage of glass, a linear of 1.5 KN/m was applied and deflections recorded after one minute.

The test results are given in the Table. 1.

Specimen #2 had an unexpected breakage, probably due to less surface compression stress. The deflections in the Specimens # 1 & 2 in pre breakage conditions for 1.5 KN/m were bit on the higher side because a full rigidity of the bottom edge could not be achieved for the non-standard glass thickness with combination of two different standard ABS wedges. For Specimen # 3, the base stiffness was enhanced by Q Railings, using slightly thicker ABS wedges which resulted in significant reduction in top edge deflections of the panel in pre and post breakage condition[5].

CONCLUSIONS Advanced structural interlayers like Ionomers, when used in a triple layer heat strengthened glass laminate construction, significantly enhance the structural integrity of the glass balustrades to resist the design loads in post breakage condition as well, thus meeting the most stringent safety norms laid down by countries like Singapore & Australia.

REFERENCES [1]

[2]

[3]

[4]

[5]

ASTM E 2353 - Performance of Glass in Permanent Glass Railing Systems, Guards, and Balustrades AS 1288 – 2006 – Glass in Buildings – Selection & installation Building Code of Australia – 2015, 2016 BS 6180 – 2011 – Barriers in and about Buildings – Code of Practice Testing of Glass Balustrade System, free standing without cap rail / handrail by Q Railing India for Kuraray India Pvt. Ltd.

Fig. 6: 1.5 KN/m load applied on broken laminate construction

Jan - Feb 2018 WFM 25

SPECIAL FEATURE

MAKING OF OMKAR 1973 – FAÇADE PERSPECTIVE About the Author: Arshad Khan, the Consulting Vice President (Façade) - Omkar Realtors & Developers, was appointed to establish and lead entire façade team for the project Omkar 1973. He was instrumental in setting up the façade team, appointment of façade consultant, finalising the suppliers and their contract. He has micro managed all the phases of the project from design, procurement, production, logistics, installation and handover. Result was probably the fastest executed façade project (over 35,000 panels) in a large scale in Indian context. Earlier he was associated with Permasteelisa Group in India and Gulf. Arshad has also worked for Al Majdouie Aluminum & Glass as Technical Manager. His vast experience with the market leaders and local knowledge has helped the entire team and client in successful completion of the project.

Rising majestically above the city and the Arabian Sea, Omkar 1973 stands as the tallest residential tower in Mumbai by Omkar Realtors and Developers Private Limited. Never before has and perhaps never again will, a structure of such monumental significance emerge, that too in the very heart of Mumbai.

The success story of completion of Omkar 1973 was the talk of the town. Here are the key factors which played a major role in achieving the same. In total 36,500 panels were procured, shipped, fabricated and installed in a record of 16 months period.

1. Unique Elevation: Though Mumbai skyline has many high-rise skyscrapers but the shape of Omkar 1973 was unique of its kind. Lots of curvature and interfacing with different elements has made the construction very challenging. Fosters Partners has conceptualised the project in a very professional manner. Later on DSP & Omkar internal Architect team played a very prominent role in bringing the concept to action.

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Arshad Khan Asst. Vice President – Façade Omkar Realtors & Developers Pvt Ltd.

2. Appointment of Leading Façade Consultant: Dubai-based Inhabit façade consultant has done most of the design and calculations for the first two towers. Later on BES who was hired for the third tower and to sort out certain issues has extensively worked on each and every detail of the building. Moreover, site visit from their end has helped the project to stick to its design intent.

3. Role of Management: Top management (specially Mr Rajendra Verma) was very active during the whole design and execution stage. Extreme faith shown by them with tremendous support to the team was one of the major points of success.

Project review meetings were conducted every week religiously. Each and every target set during the previous week was seriously reviewed. Reasons for success and failure were deeply analysed. All the serious issues were pragmatically approached and resolved.

4. Façade Team: Appointment of highly experienced, complimentary skilled and professional team with independent and distinctive task was one

䬀䤀一 䰀伀一䜀 䌀伀一匀吀刀唀䌀吀䤀伀一 䠀䄀刀䐀圀䄀刀䔀 䔀堀倀䔀刀吀

Omkar 1973, then and now

of the highlighting features. Roles for each member were properly defined and all the efforts were monitored closely to ensure meeting the deadline. All the team members were from contractor background hence they understand the impact of delays and unprofessional works.

For the first time such a big team was deployed from the client side in a single project execution.

The team has put in extra hours to complete the project tasks. The team got the best team award with other departments among all the other projects within the company.

5. Selection of Best in Class Suppliers: All the material suppliers were selected purely based on merit. CSG, Hilti, Saint Gobain, Asahi, JMA, Alpolic, Jindal, Reynaers, Global, Dow Corning Norton, 3M, Avigiri, Giesse and Osaka were the

The best team award

28 WFM Jan - Feb 2018

major suppliers of the project. All the suppliers have done their level best in accepting the challenging delivery terms and almost all of them has accomplished it to our satisfaction. Tracking of each and every material on weekly basis has resulted in squeezing the materials lead time.

6. Materials Used: Low-e glass was used for all unitised full height panels. Sentry glass was used for all the straight handrails. Heat soaking was done for all the tempered glasses. Fire rated ACP was used. All the anchors were of stainless steel.

High quality adhesive tapes from Norton and 3M were applied. The MS brackets were galvanised.

Gaskets were microwave cured.

7. Nature of Contract: The decision of the management to get the design done on their own and supply all the materials was a challenging one

Testing of Unitised system

ACP PMU Test

8.

9.

10.

11.

with big risks. The way the project was executed in a win-win situation. After the success of this project, many developers are keen to use this model for timely completion and economy.

Role of Contractors: Aluplex and Ashbee were the major contractors on the projects.

Manpower and teams deployed by them as per ever demanding schedule was to be appreciated.

Involvement of owners especially Karan Keswani who was outstanding in understanding the needs and using his authoritative skills in getting things done was commendable. Role of Rohan Keswani in making the MTO and fabrication drawings is applauded by all. Ashbee team also worked exhaustively and completed the scope of works in timely manner.

Work Breakdown Structure (WBS): The complete project was broken down into work breakdown structure in a wise way. Giving importance and priority to the project completion schedule in a holistic way.

Visit to Suppliers Factories: Project team did visit all the major suppliers’ factory to ensure the quality of work and review the progress as per agreed schedule.

Testing of all Façade Components: All the major components of the façade (unitised curtain wall, unitised balustrade, column cladding & sliding doors were tested in PMU labs in FITI Murbad, Reynaers Belgium and Winwall Chennai. Success of all the PMU has given a satisfaction to all the concerned parties. Moreover onsite testing was carried out at regular intervals ensuring anchors pull out test, façade water testing and welding test to ensure the quality of actual installation.

30 WFM Jan - Feb 2018

Testing of sliding doors in PMU labs in FITI Murbad

 Unitised system were tested for air infiltration test for +/- 600 pa. Dynamic water penetration test to +1000 Pascal (~40.38 m/sec wind velocity).

Windload serviceability test to +1750 Pascal.

Structural proof load test @ 150% positive design wind load = +2625 Pascal.  ACP sheets panels were tested for structural proof load test- ASTM 330-14 to positive 3375 Pa.  Curved hand rails were successfully tested for impact load of 45 kg falling from a height of 1.2m.  Reynaers sliding doors were tested for air permeability of above 300 pa. Water tightness was tested above 450 pa. Strength test was conducted for 4.125 pa without any distortion.

12. Tracking of the Project: Tracking of project progress is done with various template developed exclusive for the project. The best practices of the industry was implemented in a practical way.

Impact load test

Trackers consist of design progress, materials status, cash flow, budget, survey, production, logistics, installation & handing over. These trackers gave the score card of project progress on weekly manner.

13. Timely Payments: Most outstanding factor in achieving the success of the project was the timely payment by taking calculated risks. The goodwill developed due to this in the industry was really appreciable. All efforts were taken by the management to allocate the budget to ensure that payments to the suppliers reaches ahead of time. Most of the suppliers and contractors were having surplus money throughout the complete phase of the project.

14. Interdepartmental Coordination: As mentioned above, the project shape was such that it needs coordination and clearances from various inter departments like civil, MEP, finishing etc. Whole of Omkar site team and all the contractors played a prominent role in giving the extra hand help to the others. All the team leaders were appraised of their contributions.

and handing over of works to the end user was exemplary with notable comments received from them showing pleasure on receiving the end product. Snags received from the client were honoured and most of them have been complied.

3. Project Leadership: Undoubtedly the man who led the entire team was Mr Raman Sapru whose leadership was at its best; leading from the front to deliver the most challenging project in a record span of time. He was involved in all the phases of the project like design, procurement, contracts, site progress, project funding and cash flows, etc.

The above salient features reflect the importance of professional management and timely decisions in the project success without compromising on quality and safety. More such studies will help in bringing the best from the industry.

Making of Omkar 1973 - The tallest residential tower in Mumbai by Omkar Realtors and Developers.

On Project Management 1. Project Management Basics: Fundamentals of the project management were applied in the project cycle with detailed planning, allocation of resources, monitoring, mentoring, preparations of method statements, quality & safety procedures follow-ups 2. Handing Over: The speed of work completion

QUICK FACTS

Reynaers PMU test

Project: Omkar 1973 Location: Worli - Mumbai Client: Omkar Realtors and Developers Pvt Ltd Architect: Foster & partners & DSP Facade Consultants: BES consultants Materials used for facade & fenestration: Bended Aluminum Extrusion, Low E glasses, SS Anchors, Alpolic ACP sheets, Solid Aluminum Sheets, Etc Commencement Date of Facade Installation: 01-05-2016 Completion Date upto 65th floor: 01-12-2017. (small closures still going on) Jan - Feb 2018 WFM  31

TECH TALK

GLASS SELECTION FOR EFFICIENT FAÇADE DESIGN About the Author: Neeraj Sharma is an Assistant Manager at Design2occupancy Services LLP, an engineering firm providing green building services, energy modeling, commissioning and energy audit services. His experience includes analysis of energy performance of new and existing buildings.

He is an expert in energy simulation and calibrating energy simulation for energy optimisation of various buildings in varied geographies by analysing the building performance and the loopholes in building energy consumption. He also suggests energy conservation measures related to building facade, insulation, lighting and HVAC. He has done reviews for USGBC LEED, IGBC LEED projects as well as for GRIHA/ePact projects for existing and new buildings for offices, retails and hotels. He has completed more than 80 simulation projects and has performed energy modeling on over 20,000,000 sqft of area.

Energy efficiency in a building is always a major concern for the architects all around the world. It is unfortunate that the efficiency of a building is majorly measured by the efficiency of the mechanical systems used in the building. Yes, the HVAC systems of the building consume the maximum energy, but the cooling load of the building also depends on the architectural efficiency of the building. If the building architectural efficiency is maximised, its cooling load will reduce, which will impact on the load on the mechanical system with minimum energy consumption. Therefore, both architectural and mechanical aspects are equally important to create an effective energy-efficient building.

Well, it’s appropriate to say that the architects now need to be energy literate. However, yet the architects are moving forward with the same principles without considering the architectural efficiency of a building. Mostly architects follow a thumb rule of using less glass on the façade of a

32 WFM Jan - Feb 2018

Neeraj Sharma Assistant Manager, Design2occupancy Services LLP

building where it receives maximum solar radiation.

In India, incorporation of minimum windows in the south facing façade is being recommended to avoid direct sunlight. The flip side of the concept is that it dilutes the aesthetics of the building, which poses a major concern. So, architects opts for spandrel glazing (a type of glazing where there is a wall behind the glass but from outside of the building only the glass is visible), that can enhance the aesthetic value of a building, and another option is to modify the interior layout and to move the lesser occupied areas like warehouse, storage, etc. in the south side.

The regularly occupied areas should be placed in the remaining sides (east, west or north) of the building to bring down the heat load of a building. By providing more windows on these three sides where the sunray is less intense, daylighting can be increased in the building which in turn can reduce the consumption of artificial lighting.

The glass of a building allows the heat to enter the

Aerial view of the project ‘Pinnacle Infotech Solutions, Jaipur’

building in two ways – one is through the thermal conductivity or U- value of the glass where a glass is extremely conductive of heat, and another is solar heat gain coefficient (SHGC). The lesser the U- value and SHGC, the more efficient the glass is. There are a lot of glasses available, but usually architects go with these two glasses: single glazed and double glazed glasses. Out of the two, double glazed glass is more effective as it has lesser U-value and SHGC.

One more term is VLT (Visual Light Transmittance), however VLT does not have to do anything with the heat load but the daylight in a building depends on the VLT of the glass. The higher the VLT value, more is the daylight. But as the SHGC reduces the VLT also reduces, as a result it is always a difficult task to find an appropriate glass. Therefore, architects should go for energy and daylight simulation studies.

Rear & right side view

Rear & left side view

Rear & court yard view

Court yard side view

34

WFM Jan - Feb 2018

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CASE STUDY

PINNACLE INFOTECH SOLUTIONS Jaipur

Front & right side view of the project

The case study is based on the various numbers of iterations those have been done to find the appropriate type of glass for the building.

Pinnacle Infotech Solutions, Jaipur, a newly built office building, is registered for LEED certification.

As a green building consultant, we did the energy simulation and this was done to determine the appropriate glass selection for the building. A basic aspect was to have the DGU (Double Glazed Unit) glasses on all the façade of the building, as DGU are the most efficient but are they feasible? Let’s talk!

One cannot recommend the same without calculating the return of investment as double-glazed glasses are always expensive due to their efficient properties.

The energy simulation was done on the software e-Quest. The simulation team did four iterations, one was by considering all the facades with DGU, another was by considering DGU glass only on the south façade and SGU glass for the rest of the façade, the third option was to have single glazed glass on all the

36

WFM Jan - Feb 2018

facades, and last was to have single glazed glass only on the north façade (as north side faces minimum heat load) & DGU glass for the rest of the façade of the building.

“Saint Gobain” glasses were considered for the simulation; Refer to the table with glass details: The best results were on considering DGU on the south side and SGU on the rest of the sides (North, East & West). The energy consumption for this case was 1530.9*1000 kWh. Whereas the energy consumption on considering DGU glass on all the facades was 1515*1000 kWh. It showed us that the building would consume around 1, 50,000 kWh energy more in our case.

Let us have the cost analysis now, on considering DGU glass on all the facades the cost was around Rs. 5029505

No. A-103, Delphi A Wing, Hiranandani Business Park, Powai, Mumbai 400 076

Sri Harsha

Report - Glass Selection Analysis, Pinnacle Infotech Solutions For the project, Pinnacle InfoTech solutions the glass selection analysis has been done keeping in mind the results we get from energy simulation.

Below is the iterations and the simulation results with different type of glasses used.

Recommended Case SGU on North, East, West Side and (SKN 754) DGU on South

Jan

Feb

Mar

May

Apr

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Total

Space Cool

7.2

10.1

20.6

24.9

43.9

54.0

42.8

45.7

43.2

27.9

16.5

10.1

347.1

Heat Reject.

0

0

0

0

0

0

0

0

0

0

0

0

0.0

Refrigeration 0

0

0

0

0

0

0

0

0

0

0

0

0.0

Space Heat

0.3

0.2

0

0

0

0

0

0

0

0.3

0.4

1.5

0.4

HP Supp.

0

0

0

0

0

0

0

0

0

0

0

0

0.0

Hot Water

0

0

0

0

0

0

0

0

0

0

0

0

0.0

Vent. Fans

7.7

7.4

8.7

8

8.4

8.4

8.0

8.7

8

8.1

7.7

8

97.2

Pumps & Aux.

0

0

0

0

0

0

0

0

0

0

0

0

0.0

Ext. Usage

0

0

0

0

0

0

0

0

0

0

0

0

0.0

Misc. Equip.

72.5

68.4

81.3

72.6

78.3

77.9

73

81.3

72.6

75.4

72.1

73.0

898.3

Task Lights

0

0

0

0

0

0

0

0

0

0

0

0

0.0

Area Lights

15.1

14.2

16.9

15.1

16.3

16.2

15.2

16.9

15.1

15.7

15.0

15.2

187.0

Total

102.8

100.4

127.7

120.6

147

156.6

139

152.6

138.9

127.1

111.6

106.6

1530.9

Recommended Case Results: As the heat load is higher in the southern hemisphere, we have taken SKN-754 DGU glass with a best specification of SC, U-value and Visual Light Transmittance on the south façade. On the other hand the heat load is less for the other facades as North, West and East, hence it is not a feasible to have a DGU glass on these sides.

The energy consumption by considering this case is 1530.9*1000 KWH. The total cost for the case is given below.

Glass Selection Comparison

SC

U-Value

VLT (%)

Cost/ Sq.mt

Total Area (Sq. Mt)

Total Area (all orientations)

Total Cost Rs)

South

North

West

East

For DGU on south side (SKN 754)

0.23

0.26

32.00%

3250

363.37

363.37

1180975.69

SGU on Rest (Neutral Evolite ET 150 II)

0.58

0.88

50.00%

1530

525.46

344.93

313.77 1184.17

1811780.38

Total Cost

2992756.08

The total cost for the glasses in the recommended case of DGU on the south side and SGU on the rest of the sides (North, East & West) was Rs. 2992756

by around 20 lakh rupees, but the energy savings was only 15000 kWh/year that is only 15000*10 `= 150,000 `/ year.

The above results showed us that on considering DGU on all the facades, the project cost would increase

It showed us that the return of investment would be more than 13 years.

38 WFM Jan - Feb 2018

Glass Selection Comparison

Case-1 (Usual Case)

Case DGU glass on all the facades

Energy Cost of Glass (Rs) Savings in energy Savings in Consumption (kWh) (kWh)/Year energy (Rs)/Year 1515100

Case-2 DGU on south and SGU 1530900 (Recommended on rest of the facades Case)

5029505

15800

158000

2992756.08

Difference in cost 2036748.92 of glass for both the cases

Return of Investment (Years)

12.89056164

The energy consumption of recommended case is more as compared to the other cases, but this case claims saving of more than Rs 2,000,000 approximately.

If we go with case 1, i.e., the usual case of having DGU on all the facades of the building, the project will save approximately 15800 kWh a year i.e. (1.5 Lakhs per annum), which will make us to have the return of investment in around 13 Years.

The total cost for applying DGU glass on south and SGU on the rest of the façade of the building is least of all the above cases, which is leading us towards a savings of more than Rs 20, 00,000. On the other hand however we are saving by 1.5 lakhs/ annum but our initial cost for the glass will be high, which will make an ROI of 13 years approximately Results: As per the comparative analysis of all the shortlisted glasses, the project should go with the case 2 by taking SKN-754 DGU glass on south façade of the building and SGU on Rest (Neutral Evolite ET 150 II) façade of the building, as with this case the savings will be around 20 lakhs.

So, the appropriate selection was DGU on south facade and SGU glass on the rest of the facades - East, West and North of the building. It was more feasible as it was helping the project to save more than 20 lakh rupees. If the project building would have taken DGU on all the sides, the investment would have been 20 lakhs more on glasses which will make the project to have an ROI of more than 13 years, which was not feasible.

A healthy discussion among the architect, green building consultant and the owner lead the project with a very efficient façade design, which considers the above recommendation in a modified way.

Now the project team has considered SGU glass on the north facade & DGU glass on the south facade.

Whereas, for the east & west facade, DGU glass has been considered in the regularly occupied areas and SGU glass in the non-regularly occupied areas.

QUICK FACTS Project: Pinnacle Infotech Solutions Location: Jaipur, Rajasthan Architect: C.R. Narayana Rao (Consultants) Private Limited Green Building Consultant: Design2Occupancy Services LLP Landscape Consultants: Insape Design Studio Materials used for Facade & Fenestration: 50 mm XPS insulation in the roof & roof U- value is 0.383 w/Sq. m.K Commencement Date: June 2016 Completion Date: September 2017 (solar rooftop is in progress) Certification: The building documentation for LEED is under progress thereby yet pending.

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40 WFM Jan - Feb 2018

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FENESTRATION FEATURE

DESIGNING EFFICIENT & OPTIMAL FACADES AND FENESTRATION About the Author: Robert Höllrigl is an Austrian graduated mechanical Engineer who joined Cincinnati Milacron Vienna (now Battenfeld – Cincinnati) in 1974 as an extrusion tool designer for uPVC window and door profiles. He relocated in 1982 to the UK to work for W.H. Smith (Extrusion) Ltd., WHS Halo, Bowater Building products and VEKA UK, designing and building-up the well-known uPVC brands ‘System 10, Rustique, Eclipse & Esthetique’ until 2013. During his spell in the UK, he assisted a technology transfer to Encraft India Private Limited in 2006; moved to India in 2013 and works nowadays solely for Encraft as Executive Director of R&D.

Robert Höllrigl Executive Director - R&D, Encraft India

should use renewable energy; should not be wasteful with raw material resources; should have a similar life cycle as the whole building envelope; should be fully recyclable and should provide a contribution towards energy and carbon dioxide reduction. In addition, the latest state-of-the-art fenestration should be ergonomically in operation, especially for the ageing population; safe and secure in use; offer optionally traditional or modern appearance and should be, more importantly, cost effective!

What is meant by a sustainable and efficient fenestration? What are the characteristics and key features of sustainable facades and fenestration?

Complying with those desired attributes is a tall order for any of the known fenestration materials.

The industry has not found the ‘perfect’ frame material yet that ticks all those boxes. Choosing the appropriate or most suitable fenestration solution in terms of frame material and glass will always depend on the actual application.

Ideally, all fenestration should have a small carbon footprint when processed and/or manufactured;

For example: You will not find any curtain walling screens or glass facades in uPVC and hardwood nor

Parnkuti Resort, Pune

42 WFM Jan - Feb 2018

ACE City-Noida Extension

will you find 20-feet wide by 10-feet high, heavy duty patio doors made from galvanised or painted steel, although steel is undoubtedly the strongest frame material around. Curtain walling or glass facade designers had to accept that steel is stronger, but aluminium is more formable, has a reasonable strength, and is easily workable in manufacture and extremely durable in long-term use.

Knowledge of some of the inherent material deficiencies, will help architects and fenestration designers to successfully overcome those limitations by changing design parameters to play to the strength of their chosen material combination.

DESIGN TOOLS FOR PLANNING EFFICIENT & OPTIMAL FENESTRATIONS CAD knowledge is absolutely essential in fenestration design. It is a fair assumption that 99 per cent of all potential issues or faults can be eliminated by drawing and calculation. The remaining 1 per cent is probably the ‘unknown’ like material incompatibility; undetected survey issues and the usual clash of component tolerances.

During my studies, I calculated, drew and presented proudly a gear box design which was reviewed highly critical because of my tight component tolerances.

The examining professor did not lecture me, but told me only a story: “In World War Two, the Russian Kalashnikov machine gun was the perfect example of providing correct tolerances to vital components!

The machine gun worked in all climatic conditions, be it in temperatures well below freezing or being in

Curtain wall test: screen size 7.2m x 8.0m

a hot climate, covered in mud or dust, or submerged in water and so on! The only disadvantage was that the soldiers had to cover the gun in a blanket to dampen the rattling noise whilst trying silently to attack the enemy, but in your case, no one would carry your gear-box around...”

Today’s advancement in technology helps to establish the best and most suitable frame and glass combination by simulation and calculation. New project related components can be prototyped by means of utilising 3D printer technology, helping to establish appearance, fit and function. The required weather performance of big screens or facades can be pre-determined by testing representative, smaller screen/facade segments. The obtained results, when extrapolated, will provide an accurate performance indication for a whole tower block elevation. The use of environmental test chambers will assist in establishing component performance in changing climatic conditions; for example,the behavior of Structural Silicone Glazing (SSG) evaluated by accelerated climatic cyclic testing will provide the necessary confidence in materials and processing methods.

We are all impressed by the imposing appearance of a flight captain when he/she is passing by, but he/she learned to fly initially on a flight simulator, probably crashing several times whilst practising.

The fenestration industry is also using modern technology and science to achieve the common aim in fenestration of “Getting it right first time!”... but not many people are aware of it!

Jan - Feb 2018 WFM 43

Curtain wall air permeability test

ENSURING ENERGY EFFICIENCY, OPTIMAL THERMAL BEHAVIOUR & MOISTURE RESISTANCE This is actually an easy challenge! Using specialised computer programmes, receiving in-depth training and being certified as a simulator, you can enter the amazing world of thermal simulation and calculation in accordance with ISO 10077 Part 1 and Part 2.

For most people, this subject is utterly boring, but for me it is fascinating. It is like getting a faster lap time in a Formula 1 car. You should see the joy, the proudness and the excitement when the lap time was two tenths of a second faster!!! The same happens when you can reduce the whole frame U-value (window, door or curtain wall segment) by a staggering 0.1 W/ m2K (point ONE).

Technicians work with decimal points whilst finance people only look at the overall picture. At one of our

Curtain wall water tightness test

UK board meetings, I presented proudly a 0.1 window U-value reduction and the finance director merely replied, “Only point one?”

Anyway, you can predict where the condensation or moisture intake will occur by attaching, for example, a high performance frame to a concrete aperture, you can highlight that a small bead of silicone sealant is not sufficient enough to improve heat insulation properties of the aperture/frame joint design and you can proof conclusively that in future Indian construction industry may need to change to cavity walls and double glazing, helping to achieve the CO2 reduction goal as set out by the Indian government.

Today’s fenestration can match any U-value, sound reduction and shading requirement by changing components within the fenestration system, be it the frame design, the glass type, or the double-glazing spacer bar even the change of secondary sealant within a double glazing unit will make a difference!

Cavity wall U-value reduction by ‘ONLY’ 0.1 and the consequences

44

WFM Jan - Feb 2018

 

COVER STORY

BUILDING ENVELOPES: AN INTEGRATED APPROACH

Kanakia WallStreet, Mumbai, by ARK Reza Kabul Architects

The facade is one of the most significant contributors to the energy consumption of a building and it also has the biggest effect on the well-being and safety of its occupants. It is the part of a building which is most visible from the outside, hence it should be visually appealing too. A great building envelope should architecturally integrate all of its elements. However, too often, a building’s envelope is more aesthetically striking than functional or vice versa.

The design process as well as design strategies of facades should help controlling heating and cooling of the building, optimising daylighting and minimising noise through better acoustics. It should also improve occupants’ well-being and the interior environment parameters of any building. Moreover, facades need to block adverse external environmental effects and maintain minimum energy consumption. The geographical location and climate become the crucial factors in selecting appropriate design strategies.

Many types of questions are being asked over and over again regarding the best design methods for improving facade performance, appropriate design strategies for different climate types, choice of facade types and materials, effect of building orientations on energy consumption, best passive design methods for enhancing the performance and daylighting, etc. This article presents design strategies and technical approaches by many experts for building environmentally sensitive, energy-efficient facades based on scientific principles.

It also provides insight on climate-specific approaches for minimising energy consumption, analyses the thermal behaviour of different facade systems and materials, and discusses emerging facade technologies, materials and systems.

46 WFM Jan - Feb 2018

Ar. Yatin Patel, Director, DSP Design Associates

Ar. Prashant Deshmukh, Founder and Principal Architect, Prashant Deshmukh & Associates

WHAT IS MEANT BY A SUSTAINABLE AND EFFICIENT FAÇADE? Building facades have a major impact on the primary energy consumption of the building with extensive implications for climate regulation, daylight levels and the building’s overall carbon footprint, states Ar. Yatin Patel, Director, DSP Design Associates.

An ideal façade would be the one that will adapt and evolve with clock and climate and give way to the most appropriate desired outcome, observes Ar. Prashant Deshmukh, Founder and Principal Architect, Prashant Deshmukh & Associates.

The trend where façade design was focused only on the look is passé, spots Ar. Reza Kabul, Principal Architect of ARK Reza Kabul Architects. Today the awe-inspiring façade designs are backed by functionality. This includes energy efficiency, insulation capability, strength and stability, durability, ease of installation and maintenance, he explains.

Ar. Reza Kabul, Principal Architect, ARK Reza Kabul Architects

Sumandeep Singh, Architectural Designer and Medical Planner at HKS, New Delhi

production, natural ventilation and automation are considered sustainable façade solutions, observes Deshmukh.

A sustainable façade not only responds to the sun and wind movement, but also its context, including neighbouring buildings, the inhabitants of the building as well as passers-by, says Sumandeep Singh, Architectural Designer and Medical Planner, HKS, New Delhi. Adding to this, Somansh Arora, Architectural Designer, HKS, New Delhi, says that an efficient fenestration design would ideally be able to block heat gain and cold winds into the building.

Simply speaking, any fenestration is a combination of solid and void. It is critical to achieve the optimum

A sustainable and efficient façade does not merely accentuate the aesthetics, it also serves as a shield from extreme weather, where we witness in the tropical Indian climate conditions. The protective layer that it forms should be robust, energy efficient, innovative, and adaptable. While defending the structure, it should also allow to breathe, without blocking its access to natural lighting and ventilation.

Traditional façade building materials such as brick, stone, and wood are sustainable and efficient; newer materials and composites such as fibre cement and ceramic are rapidly gaining acceptance.

High performance building skin, high insulated and airtight external building elements, solar energy

A residential project by Lingel

Jan - Feb 2018 WFM 47

Somansh Arora, Architectural Designer, HKS, New Delhi

Amit Gupta, Principal Architect, Studio Symbiosis

wall window ratio, specific to the site where the project is located, observes Ar. Amit Gupta and Ar. Britta Knobel Gupta of Studio Symbiosis. The elements of the solid and void of the façade can be expressed through various materials. They also agree that optimisation algorithms are run for building design to reduce the heat gain, channel wind speeds, etc. to create a form that responds to the elements of nature. This embeds sustainability in the design itself.

Views delivered by windows contribute to eye health by providing frequent changes in focal distance which help to relax eye muscles, adds Ar. Deshmukh.

Intelligent glazing solutions for the safety of the building users at the same time maintaining the aesthetical appearance of the building.

Britta Knobel Gupta, Principal Architect, Studio Symbiosis

Amir Hashmi, National Head Marketing & Sales, profine India Window Technology Pvt. Ltd

High-performance, sustainable facades use the least possible amount of energy to maintain a comfortable interior environment, providing a climate-specific approach for minimising heat gain (in tropical climates) and related energy consumption, thus analysing the thermal behaviour of all sides of the façade systems and materials, points out Deshmukh.

This promotes the health and productivity of the building’s occupants.

When you are talking about efficient facades or sustainable facades – you are essentially weighing them on the parameter of energy efficiency and environmental sensitivity, says Ar. Yatin Patel. While the façade materials should be made without the depletion of natural resources – it’s rather farfetched.

Amir Hashmi, National Head - Marketing & Sales, profine India Window Technology Pvt. Ltd, put forward that window has been the most important component of the facade. It allows natural light to enter into your home and affect building’s overall energy consumption, he adds. Window material and its properties decide the amount of energy consumption and also the heat loss or gain inside the house. Good U-value and double glazed glass used in the windows help in reducing the amount of incoming heat and harmful ultraviolet rays, thereby making the room temperature cosy.

Agreeing with Hashmi, Mahesh Londhe, Manager Production & Technical Support, VEKA India Pvt. Ltd, observes that reduction in heat through conduction/ direct solar gains and increase availability of visual light are some of the key features of sustainable and efficient fenestration.

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A project by profine India Window Technology

Mahesh Londhe, Manager - Production & Technical Support, VEKA India Pvt. Ltd

Capgemini Development Center, a LEED Platinum project at Airoli, by DSP Design

Many fenestration brands provide utmost importance to environment and many window and door systems are lead-free. “Calcium-Zinc stabiliser included in our formulation to provide high quality window profiles that adhere to environmental standards and are ecofriendly”, assures Hashmi. The generation of leadfree uPVC profiles safeguards the environment for our future generations.

WHAT ARE THE PIVOTAL FACTORS OF EFFICIENT FAÇADE & FENESTRATION DESIGN? The selection of material, placement and design are key factors affecting an efficient fenestration design, says Kabul. It impacts the building energy efficiency by affecting the heating, cooling and lighting. The use of daylight forms the base of a high performance sustainable design, affecting the user of the space on a conscious and subconscious level.

Window location, shading, and glazing materials play a pivotal part in designing the natural lighting into a

space. He also warns that poorly designed windows can create a major source of glare as well as thermal imbalance. A lot of the traditional sustainable methods are yet implemented today because of their simplicity and effectiveness. For instance, eastwest windows and unshaded south windows are avoided as they can increase the load on the cooling systems. It is fundamental to design interior layouts to take advantage of the natural daylight conditions.

Direct sunlight is ill-advised, the solution to which is diffusing sunlight into the space through a medium, advices the pioneer architect. Artificial electric lighting systems are to be designed to complement the daylight design, and not be the main source of lighting. This ensures maximum energy savings using lighting control.

Agreeing with Reza, Patel too points out that the predominant characteristics of sustainable facades are their positive implications with regards to the thermal mass effect, exposed mass + night purge ventilation, passive solar heating, natural ventilation

Key features of sustainable façade are:  Allowing daylight into a building which is determined by the orientation of the building.  Preventing unwanted solar heat from entering the building by using intelligent solar shading systems.  Storing heat within the mass of the wall helps in saving energy.  Good thermal insulation prevents heat transfer and minimises energy consumption in a building.  Preventing air or moisture from passing through the façade by using air tight and waterproof materials.  Allowing natural ventilation to cool the building’s interior by using decentralised ventilation system for healthy and energy efficient ventilation.  Use of simulation tools and techniques which can help in designing the orientation to minimise heat gain and improves the overall performance of the building.

(Ar. Prashant Deshmukh, Founder and Principal Architect, Prashant Deshmukh & Associates)

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HOW DO YOU DECIDE ON MATERIAL SELECTION FOR FAÇADES? Climate-specific guidelines must be considered during the selection of materials and design process of high-performing building enclosures. Wind pressure, heat load and atmosphere play prominent role in the selection of any façade material and in façade design.

Mario Schmidt, Managing Director of Lingel Windows and Doors Technologies Private Limited

Nikhil Gupta, Principal Architect, Acanthus Architecture & Interior Consultants

(NV), direct evaporative cooling, indirect evaporative cooling, energy efficiency, use of renewable energy resources and more.

According to Mario Schmidt, Managing Director of Lingel Windows and Doors Technologies Private Limited, energy loss should be taken care while making the structure/contraction to create the maximum natural shading and while using the most experienced material to reduce the energy loss further. He explains that product development is done based on the recycling of the product once the life cycle is over. All components, materials after the recycling process can be reused in other products.

In Europe, many uPVC profiles have a grey colour base material, which are actually recycled uPVC components and only the outer skin of the uPVC profile have the virgin white material Energy loss should be taken care while making the structure/ contraction to create the maximum natural shading and while using the most experienced material to reduce the energy loss further.

Nikhil Gupta of Acanthus Architecture & Interior Consultants too emphasises on proportion of quantity of windows in entire facade is very important while designing. Glass façade need to be designed as per the heat calculation and the direction of the sun. Fixing details also play a crucial role in any glass window façade, either in stone or wood or in aluminium, he adds. Agreeing with Gupta, Arora from HKS adds that in summers the sun angle of incidence is higher than in winters, so the fenestration mechanisms need to respond to the same. This could be done by employing a fixed or operable design. Depending on the location and orientation of the building, one can block cold winds and introduce openings to introduce fresh air circulation into the building.

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Parameters such as adaptability to the geographic zone, fade resistance and longevity are important deciding factors for façade projects, points out Ar. Reza. The idea is to work with nature rather than to try and resist its influences. Along with the aesthetic appeal and uniqueness in design, the choice of materials need to be technically viable. The choice of materials has seen a major shift towards more sustainable green building. The market is fast expanding and façade fabrication has become more affordable. New materials such as high pressure laminates (HPL), ultra-high performing concrete (UHPC), carbon fibre, corten steel, ETFE membranes, and slid surfaces are rampant in the market today.

According to Nikhil Gupta, fixing detail of any facade either in glass, wood or stone, is that it should bear the wind pressure and should be earthquake resistant as per their specific zone. The long life of the materials also matters, as facade cannot be changed or renovated after every 7-8 years. We should design it in a way that it should look the same even after 40 years if possible and should be maintenance free.

A project for Ameya properties Ahmedabad, by VEKA

Façade Materials Should Possess Following Properties:  Low thermal conductivity  High density (imporosity) that prevents dirt from penetrating  Durable  Lightweight  Zero absorption of moisture  Little maintenance  Resistance to water and fire  Non-toxic material  Eco-friendly material with low embodied energy (Ar. Prashant Deshmukh, Founder and Principal Architect, Prashant Deshmukh & Associates)

Material selection for a façade is very important as per the site conditions. There are very few materials in the market which are stain-free and easy to maintain as facade cleaning is not an easy job. Glass, aluminium composite panel (ACP) and high pressure laminate (HPL) are still better than Italian stones or texture paint in metro cities where there is a lot of pollution and dust.

Natural materials like wood, stone and paint are very comfortable on the hills and beaches, adds Nikhil Gupta.

Patel says the design specification of the façade definitely leads to setting the norms for material procurement, however, this involves simulation in terms of determining how the façade responds to the context and use of space. There is scope for customisation and scalability depending upon the level of energy usage estimations, and can be a major influencing factor towards the structural design, which is typically decided at the initial stages of the design.

A project for Hager by Prashant Deshmukh & Associates

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A façade mindfully designed to decrease energy consumption - both for lighting and cooling - shall contribute volumes to the sustainability quotient of the building. With the photo voltaic technology available today, the facades can be smartly designed to harness the renewable energy sources and create zero-energy buildings, points out Yatin Patel.

In terms of material usage, the façade design should ensure minimal wastage by optimising panel sizes, observes Sumandeep Singh. This generally varies from project to project, but we try and follow LEED, GRIHA and WELL standards for most of our projects, he adds.

ENVIRONMENTALLY SENSITIVE FACADES & FENESTRATION Efficient facades and fenestration can aid development of environmentally sensitive buildings, based on the

Le Meridien Thimphu (Thimphu, Bhutan) by ARK Reza Kabul Architects

A project by HKS

climatic context of the place. Given Asia, the climate ranges from warm to humid, which demands different façade strategies. Building characteristics have a substantial influence on the annual electricity potential of a building. The impact of building location and climate, size and orientation on the thermal comfort are major investigations that need to be undertaken.

Efficient façade design is dependent on a few generic elements like minimised area of the building’s external skin, levels of thermal insulation, maximised natural ventilation and daylight, maximising diffused light and maximising glare, optimised window sizes, geothermal heat exchangers, walls high on thermal mass, the integration of photo voltaic cells within glazing, U-value of the glass, etc.

A project for Hilton by Studio Symbiosis

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According to Yatin Patel, the parameters considered towards the testing exercise typically include thermal properties of the material (u-value and SHGC, SF, SR) and the performance of the material with respect to various climatic conditions.

According to Sumandeep Singh, the crucial feature of a climate-responsive façade is its ability to adapt to the climatic changes for e.g., temperature changes and wind pressure. In tall buildings, a detailed analysis of wind pressure is carried out to mitigate the strong wind force using a wind tunnel experiment. This in turn helps in understanding the pressure points of a façade and mitigated accordingly. Temperature changes can be controlled based on the material you choose and its various properties such as thermal values, reflectivity, absorption, etc.

ST. Xaviers High School, Manesar, by Acanthus Architecture & Interior Consultants

Energy Efficiency – Energy Performance Index (benchmarks for that particular type of building under defined climatic conditions) acts as an indicator in qualifying the energy efficiency of a building. The designer needs to consider properties of exterior building components such as U-values, SHGC, and visual transmittance while choosing façade and fenestration materials.

Optimal Thermal Behaviour – Air temperature, humidity, air movement, no difficulty in concentrating or gripping equipment (health and safety risk assessment), appropriate types of protective clothing, temporary heater. Maximise healthy environment – avoid impacts of toxic emission from materials in indoor environments. Use of elements like green vertical facades, green roofs, skylights, courtyards that help in keeping the internal atmosphere well-ventilated and well-lit.

Moisture Resistance - can be done by using underlying waterproof membranes and providing drips, flashings and water tight joints.

(Ar. Prashant Deshmukh, Founder and Principal Architect, Prashant Deshmukh & Associates)

Mario shares that natural shading from the direct heat of the sunlight, sun screens, sunbeams and boxes around the windows can reduce the heat ingress due to direct sun.

HOW DO YOU ENSURE ENERGY EFFICIENCY, OPTIMAL THERMAL BEHAVIOUR AND MOISTURE RESISTANCE? For energy saving, says Deshmukh, building management system can be used to control lighting/ air conditioning/fire protection. It saves energy and reduces peak electricity demand when electric lights are turned off or dimmed when daylight is abundant.

Buildings loses room temperature through its windows and doors. ‘‘Good quality uPVC windows with energy efficient glazing can help to reduce this loss and maintain the comfortable temperature for a longer duration which in turn reduces energy bills“, says Hashmi.

Fresh air devices from different vendors assures a good amount of fresh air coming on reducing the

humidity level and increasing the comfort of living.

If humidity outside is very high and the AC is running inside the room, condensation will be there at the coldest point which is by default the window glass, observes Mario. The condensation creates the water drops on the glass and the walls around. This can even create fungus at the POP areas around the window which can be harmful to the people staying inside.

While designing the façade, one needs to choose the structure that would efficiently support the external skin, says Sumandeep Singh. This could be in the form of a diagrid structure or a quad grid depending on the design. Once the structure is decided, points on the structure are fixed with supports for the skin. The skin then becomes the main source for optimising thermal behaviour and moisture resistance depending on materials chosen.

The design itself takes care of creating an energy efficient façade along with the design specifications, points out architects from Studio Symbiosis. Tested systems are proposed in our project’s that ensure design specifications like thermal break, moisture, etc.

Are uPVC Windows/Doors Good For All Weather Conditions? uPVC windows and doors keep their excellent material properties even after many years in use. As a matter of fact, they do not alter under extreme temperature or weather conditions. No matter in which climate the windows and doors are installed, they contribute to a cosy and comfortable atmosphere in your home. As the design of the systems prevents thermal bridging, the thermal insulating performance of the window is exceptionally good. The glazing is also of utmost importance for good thermal values and contributes to substantial energy saving. Good quality uPVC window and door systems eliminate the problem of moisture condensation on window panes inside the house done with EPDM sealing gaskets.

(Amir Hashmi, National Head - Marketing & Sales, profine India Window Technology Pvt. Ltd)

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HIGHPERFORMANCE SUSTAINABLE FACADES KEY FEATURES OF SUSTAINABLE FACADES AND FENESTRATION The façade forms the external weatherproof envelope of a building. In modern buildings, the façade is often attached to the building frame and provides no contribution to structural stability.

This type of façade can be referred to as a non-load bearing vertical building enclosure.

Building facades perform two functions –they act as barriers that separate a building’s interior from the external environment and they create the image of the building.

Sustainable facades are defined as an exterior enclosure that use the least possible amount of energy to maintain a comfortable environment, which promotes productivity to certain materials which have less negative impact on the environment.

APIIC - Guntur Office

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Oscar G. Concessao, Ponni M. Concessao, Founders and Principal Architects, Oscar & Ponni Architects, Chennai

Essentially, there are two types of facades: Opaque facades, which are primarily constructed of layers of solid materials, such as masonry, stone, precast concrete panels, metal cladding, insulation, and cold formed steel framing. Opaque facades may also include punched openings or windows. Glazed facades, such as curtain walls or storefront facades which primarily consist of transparent or translucent glazing materials and metal framing components.

EFFICIENT FENESTRATION DESIGN Good fenestration design involves consideration of the functionality, size and placement to make optimum use of ambient light and ventilation. It plays a key role in the connection of the interior to the environment. Also good natural lighting and air circulation are the most important criteria during the design of fenestration. The amount of sunlight entering a room has to be controlled according to the climate of the place. New fenestration technologies

Citilights IT Park, Chennai

DECIDING ON THE MATERIALS FOR FACADES One of the most important things you can do to improve the lifespan and quality of your building is to choose the right façade cladding. In design, a building’s ability to withstand the passing of time and wear in a sustainable manner is referred to as “post-construction maintainability”. A structure’s maintainability will be in great part determined by the materials you are using on the exterior. Picking the wrong materials is a mistake that might take some time to show, but it always will.

Due to the relevance of the materials used on the facade, you need to spend time studying your options.

Be sure to analyse a wide selection of materials in the design stage. When doing this, keep in mind that you have to take into account the context and the use of the building. The main criteria’s are the durability of the facade material, health and safety, availability and sustainability.

ENSURING HIGH-PERFORMANCE SUSTAINABLE FACADES Citilights IT Park, Chennai

are used to control the intensity of solar light entering the place, its distribution and the spectral composition. The performance criteria and the design of fenestration will vary according to various factors such as location, climate, building type, internal design, etc. Recent fenestration techniques have been developed keeping in mind the present client as well as the requirements of the future occupants.

Achieving a net-zero energy building cannot be done solely by improving the efficiency of the engineering systems. It also requires consideration of the essential nature of the building, including factors such as architectural form, massing, orientation and enclosure. Making informed decisions about the fundamental character of a building requires assessment of the effects of the complex interaction of these factors on the resulting performance of the building. The complexity of these interactions necessitates the use of modelling and simulation tools to dynamically analyse the effects of the relationships, yet decisions about the building fundamentals are often made in the earliest stages of design, before a ‘building’ exists to model.

High-performance, sustainable facades promote the health and productivity of the building’s occupants.

They are building systems that create comfortable spaces by actively responding to the building’s external environment, and significantly reduce buildings’ energy consumption. Climate-specific guidelines must be considered during the design process of high-performing building enclosures.

Strategies that work best in hot and arid climates are different from those that work in temperate or hot and humid regions. For most buildings, the facade affects the building’s energy budget. Efficient facades should provide views to the outside, resisting wind loads, supporting its own dead load weight, allowing daylight to interior spaces, blocking unwanted solar heat gain, protecting occupants from outside noise and temperature extremes, and resisting air and water penetration. Basic methods for designing highperformance building facades include - orienting and developing geometry and massing of the building to respond to solar position; providing solar shading to control cooling loads and improve thermal comfort; using natural ventilation to enhance air quality and reduce cooling loads; and minimising energy used for artificial lighting and mechanical cooling and heating by optimising exterior wall insulation and the use of day lighting.

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Selection and Placement of Windows Selection of material is very important in fenestration products. PVC-U is the least heat conductive material after wood. Due to its lower U value, PVC-U windows are best suited for fenestration. Its other feature is welded joints which are air & watertight. Glass consists of 70 to 90 percent area in windows, so selection of correct glass plays a very important role. High performance glasses are available which are very much energy efficient. Double or triple glazed units with special low E coatings offer extended thermal insulation.

Casement (openable) type windows offer much better insulation properties as compared to sliding windows.

They are very much effective in moisture resistance as well. EPDM or TPV gaskets in PVC-U windows help in moisture resistance. Orientation & size of a window is also important to achieve greater energy efficiency & thermal insulation. A window in the south orientation has to be comparatively smaller in area than a window in the northern direction. Lastly the correct installation technique is required to install a high performance window. Use of special sealing material such as expansion foam, sealing tape in addition to weatherproof sealant ensures optimum insulation from heat, dust, sound & moisture.

(Mahesh Londhe, Manager - Production & Technical Support, VEKA India Pvt. Ltd)

DESIGN TOOLS FOR EFFICIENT & OPTIMAL FENESTRATIONS

to swap between the elevation views and structural drawings, providing a more holistic design analysis.

Technology has become the defining force of a new social order. “With the influx of 3D design tools such as Revit, 3D Max and Lumion into our workflow, we are exploring newer frontiers,” avers Ar. Reza Kabul.

According to the architects from Studio Symbiosis, the building modelling is done in 3D/BIM softwares and simulation studies are done to achieve the design proposal.

The tools we employ enable us to explore forms, real-time and derive key insights into the thermal, daylight and solar performance, says Yatin Patel. An analysis of these factors allow us to make intelligent decisions in the initial design phase, saving cost and time investment leading to well optimised sustainable designs, adds Patel.

In perspective of façades and fenestration, this software help generates climatic studies based on the location study and survey, such as the sun and shadow analysis, which help understand the impact of daylight on the structure and that of the façade on its surroundings in a better way. It also makes it easier

CONCLUSION Facades act as barriers between the exterior and interior environment, providing building occupants with thermally, visually, and acoustically comfortable spaces. As energy and other natural resources are being depleted, it has become clear

For generating the effective designs using the right software is a must. We use different software to generate all as below:  Grasshopper 3D- Plug in is a graphical parametric form generating tool which is integrated into Rhino 3D. It allows to generate complex parametric forms.  Revit is used for 3d modelling of the building.  Ecotect is used as an environmental analysis tool which allows to simulate building performance from the stage of conceptual design.  DIALux is lighting design software, which can design, calculate and visualise light in any space from this software.  The groundhog is used to digitise geological cross sections, borehole logs and geological map.  Thermal comfort – assessment software is used to rate the thermal performance of any building.

(Ar. Prashant Deshmukh, Founder and Principal Architect, Prashant Deshmukh & Associates)

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A project by Lingel

that technologies and strategies that allow us to maintain our satisfaction with interior environments while consuming less of these resources are major objectives of contemporary facade design. To achieve this high performance, designers need to consider climate-based design approaches, thermal performance, daylighting, solar shading, glare, moisture transport, materials and their environmental impact, etc. This article discussed design strategies for high-performance facades, relationships between building simulations and

Jain Residence, Noida, by Acanthus Architecture & Interior Consultants

design process, and how materials and application of simple design principles can assist in identifying strategies for reducing energy consumption and improving building performance. Design approaches grounded on the climate-based design strategies. It is essential that quantifiable predictions are integrated with the design process, including energy modelling and analysis, heat transfer analysis, combined heat and moisture analysis, daylight analysis, and thermal comfort analysis.

Aqua VIlla by Studio Symbiosis

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PRODUCT WATCH

OZONE LAUNCHES SLIMMEST AUTOMATIC SLIDING DOOR SYSTEM ‘AIRDRIVE’ crafted with high quality, superior finish and engineered as per latest international quality and safety norms so that the final product delivers smooth and silent performance. Ozone offers large range of automatic doors, hotel guest room locks and intelligent locks equipped with latest technology. The range includes products for hotels, residences and commercial applications.

A sliding door fitted with Airdrive door system

Ozone, a provider of architectural hardware solutions, has announced the launch of its slimmest automatic sliding door system ‘Airdrive’. It is designed with a tiniest yet powerful operator of only 68mm height and 135mm depth enabling it to be the slimmest in size, which is the USP of the Airdrive door system. It delivers consistent performance without any halt as it is engineered in compliant with best prevailing standards such as EU standard EN 16005, EN60335, EN 1SO 13849 1: 2008, German standards DIN 18650S, CE Conformity and EU low voltage directives with max power consumption of 250W. It is manufactured following ISO 9001: 2000 standards which ensures the stringent quality check at every stage as a result a best quality final product delivered.

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With Ozone’s Airdrive automatic door system, you can achieve max door opening of 2m and 3m in case of single sliding and bi-parting sliding double panels respectively.

It is suitable for door panel weighing 150 kgs for single sliding and 120 kgs of each door panel in bi-parting. It can be integrated with all access control devices, such as microwave sensor, push button, remote control, etc. and can integrate safety beam barriers for safe movement of people. It is the best choice for professionals looking for ‘not so much visible’ automatic door system.

Airdrive automatic door system is introduced from S Series which comprises premium architectural hardware fittings and solutions for high budget luxurious projects. S Series products are

Ozone product range consists architectural glass fittings, door hardware, door control devices, kitchen & furniture fittings, wardrobe sliding door systems, automatic doors and intelligent locks, movable walls, digital (electronic) safes, digital doors locks and furniture locks, metal fire safety doors, cleanroom doors, office doors, partition systems and bank security solutions.

Airdrive automatic sliding door system: a premium architectural hardware fitting

Ozone Products Visit at www.ozone-india.com or call customer care at +91 9310012300 or email at ozone@ ozone-india.com

PRODUCT WATCH

LEGEND SLIDE DOOR SYSTEM FROM DECEUNINCK

Deceuninck has launched a unique shift and slide door system called ‘Legend Slide’

Deceuninck, one of the leading producers of uPVC profiles for doors and windows, has come up with a unique shift and slide door system ‘Legend Slide’ in the Indian market. Legend Slide combines simple operation of lift and slide system and with the exceptional sealing capability of tilt and slide. The door system offers in various formats, such as outer frame of 149mm, 76mm sash with 5 chambers in class B, TPE weldable gaskets and glass thickness options from 24mm up to 52mm.

Sash movement occurs with guide locking parts and running car sets on different axis. The continuous all-round seal and the guiding and locking elements in all four corners of the sash ensure a tight seal for stringent energy efficiency

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requirements. Besides, the system is tested for air permeability – EN 12207 – class 4 – 600 pascals, water tightness – EN 12208 – class 8A – 450 pascals, wind resistance as per EN 12210 – class C4/ B4, and additional stiffeners possible for higher wind loads.

The system makes your spaces weather proof protecting against the hot/cold weather, rain, moisture and provides the best solution for architectural projects requiring wide openings. Notably, the company intends to further up the high thermal performance market with its triple gasket 80mm series Legend in 2018. In addition to normal doors and windows in white and lamination, the Legend range will also be available in unique aluminium cladding- Legend Armis.

Deceuninck is one of the few suppliers with a strong focus on high performance doors and colour profiles. The company offers a wide variety of colour lamination profiles for sliding and casement windows and doors. Its lift and slide high performance doors have made a mark in the retail segment. Established in 1937, Deceuninck completed 80 years of sustained growth in the industry in 2017. With its 14 production and 22 warehouse facilities spread across the world, Deceuninck garnered € 670 million in 2016. India and Thailand are two gateways to Asia for the Deceuninck group and its growing strong in these markets too.

In India, Deceuninck has set up its 35,000 sqft warehouse in Chennai in 2012 and stocks 450 tonnes of profiles and custom hardware in addition to special reinforcements for high performance doors.

Deceuninck was the first to test its sliding systems at Winwall, Chennai for high wind pressures 2.4 KPa proof load. To step up its technical supremacy, Deceuninck has set up in-house testing facility to ensure customers can check their windows and doors so that they can confidently offer the right systems for projects.

For more details on the product, log on to www.deceuninck.in

PRODUCT WATCH

LINGEL LAUNCHES ONE OF ITS KIND SMART WINDOW ‘SMART LI’ system, which is controlled by WiFi sensor, there are no wires required and it works on finger sensor. It can control the opening and closing of doors. The inbuilt air purifier indicates the presence of pollution amount in the room and when the filters need to be changed. It also has smoke detector that detects when any fire mishap occurs. The inbuilt rain sensor is a useful add on which provides information about maintenance and housekeeping if it is raining outside.

Mario Schmidt, Managing Director of Lingel Windows and Doors, said, “We believe we have to move with time. With technology booming in every sphere we as a brand also need to constantly explore new avenues to get to the next level.

We have earlier won the Design Wall 2016 awards for the same product. Our customers who have trusted us in the past 11 years can continue to do so with the new launches that we have had for them”.

Mario Schmidt, MD of Lingel Windows and Doors, Launching Smart Li

Lingel, a German-based window and door company, recently launched Smart Li at the Ace Tech exhibition in Delhi. This smart window is Lingel’s latest innovation which has various features to make life easy and comfortable.

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Smart Li is a break through when it comes to window and door technology with special features.

It has smart phone-application as control panel and received all important information and development on the mobile phone. It features inbuilt security

Lingel recently launched Lingel 6.0 Aluminium windows. It is a forward looking brand which believes in innovation and putting customer first.

For more details on the product, contact: Mario Schmidt, mario@lingel-window.in, Mobile number: 8800 199 641

FACE TO FACE

IN CONVERSATION WITH THE VISIONARY OF ARCHITECTURE Ar.Hafeez Contractor’s creative brain has churned out numerous incredible designs - be it for elaborate corporate campuses for technology giants like Infosys or Microsoft or the luxurious houses for builders like DLF or Hiranandani - all these creations certainly bears the architect’s signature flamboyance. He is more like a luxury brand. His designs for the Imperial Towers I and II that defines the Mumbai horizon, 23 Marina in Dubai (the tallest residential buildings in the world), many stadiums, institutional buildings, swanky shopping malls and majestic airports are awe-inspiring. The builders love to highlight the starchitect’s name in their project’s billboards, so that their ventures are endorsed better and give an upper hand over their competitors. In a candid interview with WFM, Ar. Hafeez Contractor discusses his firm’s modernistic approach to sustainability, vision for the future building materials and designs, concerns regarding the future cities and the right approach to design them. The following are the excerpts from an exclusive interview with Ar. Hafeez Contractor.

Ar. Hafeez Contractor Founder and Principal Architect, Architect Hafeez Contractor

 WFM: How have you been ideating and practising sustainable architecture? Do you think that the present ratings for sustainable buildings are important?

Mumbai Skyline - Imperial Towers I and I

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Hafeez Contractor (HC): Yes, I feel that the green building ratings are important. In India, sustainability of the building could be evaluated by its LEED or GRIHA rating.

Such ratings assess the environmental performance of a building holistically, and provides a definitive standard score. The tools adopted by them, by its qualitative and quantitative assessment criteria, is able to ‘rate’ a building on the degree of its 'greenness’. According to the points achieved, buildings are given LEED Platinum, Gold and Silver ratings, or GRIHA 1 to 5 star rating.

Infosys Progeon, Bengaluru

According to me, we have to take the standards assigned to the green building ratings to a much higher level in future. For our country, the benchmarks should be at a much higher level since our population, especially the population in urban areas, are growing at a much higher pace than other countries, whereas the family size is reduced from large joint families to nuclear families to micro families of two members. Thus, the need for urban housing is increasing along with the need for food, water, and fuel requirements and we need to cater to the needs of micro nuclear families.

Today we are thinking only about the design of a building and its construction methods while rating them. We need to delve deeper and analyse whether they are actually sustainable. Is the LEED or GRIHA rating substantial? Is this all what is needed for a sustainable building? Or is this what sustainability is all about? We have to think further.

Infosys, Mysore

ď Ž WFM: How can we set the benchmarks of

sustainability to higher levels?

HC: I feel that the time has come to discuss about larger developments like cities. How they are going to be designed and built. We must also ponder on how cities are utilising the available land. Currently

Infosys ECC, Pune

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Hyatt Regency

we are talking about 100 smart cities. Should we make 100 smart cities or should we add up just three mega cities next to a city?

to build. The non-agricultural land could be used for intense, dense developments, so that there is less dependency on any kind of transportation.

ď Ž WFM: What are your views on future cities and

We should go for enormous vertical developments, i.e., one massive tall building, providing space for offices, retail shops, residential flats, entertainment areas and so on. Since all these would be within a building, we can reduce the distances, thus can avoid roads and vehicular transportation. We should be thinking about vertical transportation with elevators.

Thus, we become less dependent on fossil fuel and should look for other means to produce electricity,

what should be the design approach?

HC: I would say that, instead of discussing 100 smart cities, we must go only for three large mega cities. We need to plan for denser cities, which could accommodate say 30 or 40 million people in locations closer to the existing cities, where there is ample water, power, food and useless non-agricultural land

Lavasa city, Maharashtra

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ONGC, Mumbai

23 Marina, Dubai

probably relying more upon nuclear power or solar power or a combination of all. It would lead to a higher level of ecological development. I would say that it all depends on how we preserve land since land is a very precious commodity which nobody can manufacture.

Airtel Office, Gurugram

Another important aspect is the cultivation of food.

With the increase in population, the demand for food will increase. Hence, the preservation of land and creation of green spaces is very important. We should think of vertical farming.

I would say that vertical zoning is the only solution or option for making developments denser which would lead to sustainable cities. (He explains his drawing on Tiered Cities) ď Ž WFM: In the past two decades, new cities like

Noida and Gurugram have come up and are densely populated. What is your view on such developments?

Tiered Cities - Sketch

HC: Today, when I look at any new city, I am sad to say that the zoning is done in a very antiquated way. These outdated methods of city planning (horizontal zoning) is not suitable for the future cities. All segments whether it is manufacturing, retail, parking, open Jan - Feb 2018 WFM  75

spaces like parks and gardens, residences or offices should be integrated into one mass vertical building.

Times have gone where we used to think about small cities. As I said earlier, we should have only large vertical cities in a much bigger scale. With megacities, opportunities for jobs are better; same for schooling or work approach. Small cities around Noida and Gurugram are developing in a haphazard way. They are all farm lands, which are eaten up by builders.

These developments are thoughtless ones leading to disasters. We cannot follow the same time-worn pattern which is 20 or 30 years old.

At the same time, we need to revise the land rights, supporting sustainable development of the available land. The whole legislation needs to be changed which would help city planning and that is the only way for sustainable development. There is discussion on sustainable architecture and green buildings everywhere, and the word 'sustainable' is so commonly used. If we want to think about the future, and if we are really honest that we want to leave this world in the right condition, or at least in a condition which is fit for the future generations, we should think about vertical, dense, mega cities. Otherwise, it is all hypocrisy.

DLF, Hyderabad

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Bellaire by DLF, Gurugram

ICICI, Hyderabad

The Infosys’ Global Education Centre, Mysore

 WFM: Please tell us about cost effective strategies

which could be followed?

HC: Today, cost management and choice of costeffective strategies are very important for our country. Utilisation of land should be optimal and cost of construction/materials should be tangible.

Now a days, in a given area, we are constructing more number of houses that what it was 20 years ago. We should always think about innovative materials and methods incurring less cost, at the same time build more effective structures in a well-planned city through the ideal land use.

The Aralias, Gurugram

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Ar. Nishant Gupta, an Associate Architect with Architect Hafeez Contractor, joins the conversation on cost effective strategies for sustainable urban housing and more.

Nishant has been working with AHC for nearly 10 years after the completion of his architectural education from Apeejay School of Architecture and Planning-Greater Noida.

He has been involved in design development of Nishant Gupta, many compact housing Associate Architect Architect Hafeez projects and has done Contractor research on housing scenario and low cost housing in India. His major projects include Patna Riverfront Development, Affordable Housing Xrbia, Lodha Kolshet, The Marquise for Hubtown and Radius, Sheltrex, Monarch Rise, Mumbai Coastline Freeway and Blue Dreamcity-China.

Mixed Use Development, Mumbai

 WFM: What are the key factors to consider while

designing sustainable façade and fenestration for a building?

Nishant Gupta (NG): Primarily, buildings need to be sustainable or else they could be the major energy guzzlers. The building needs to be oriented appropriately. Then we contemplate on the type of material to use over it as the skin or façade.

In India, being a tropical country, we all know that while designing a building, the south-west part could have dead walls, where we can accommodate

service areas like staircases. The north face of the building should have fenestration. But there are cases in which one cannot achieve this in terms of the orientation of the building, and fenestration has to go on the south-west side. Then we look at other passive and active measures to bring down the energy consumption of the building. Façades help to regulate the environment within a building. Façade is the extension of architecture.  WFM: What is your take on façades for the future buildings?

HC: When we think about the façade, a few years back we looked at materials like brick or concrete.

Presently, many buildings use a lot of glass, which is a great material. But we have to think beyond these materials. We need to plan, design and construct for the future. Should we not think about façades with air-curtain walls (like air-curtains for a door)?

We need to dwell on and innovate new materials and technologies. The methods of construction or installation of façades need to be contemplated in a completely different way.

ONGC, Dehradun-Exterior

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Now we have buildings of 50 floors and 100 floors.

Should we just limit the buildings at 100 or 150

floors, or should we go higher? When we construct a 200-storey or 300-storey building in the future, will the present materials be useful? We have to think how we are going to do higher, taller and more sustainable buildings. These buildings should be equipped to face calamities like floods, earthquakes, typhoons or hurricanes. The building technologies should be developed in order to cater for the safety and security of the tall buildings under any such circumstances. The need of the hour is not just to think about available materials, but future construction materials and technologies.

Soon our country's population will touch 1.5 billion and very soon it could reach to two billion. Where are we going for land to accommodate the population and how would we cater for food, power and water?

There is plenty to do while thinking about future buildings or future façades. At present, we are working or planning the buildings based on the availability of materials and technology. But what should be done in the future? I am always in search for novelty and not been able to reach that level. Now, taking full advantage of the available resources in a most effective way, we try to attain sustainability.

But this is not enough for the future.

Mahindra World School, Chennai

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Infosys, Pune

As an architect and a thinker, I am always contemplating what should be done for the future buildings? In future, you wouldn’t use cars or buses for transportation within a city; you might use only electric pods or vertical transportation. You may see more flying cars/pods to go from one city to another than those run on the land. We will have a variety or many systems for mass transit. May be all of them will be using solar or nuclear power. Designing future buildings which are self-reliant and constructing buildings for such times, which is not very far away, is a challenge to achieve.

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who can talk about these materials and help us out in choosing the right one in a much better way.

I can imagine and ideate buildings for the future. Why one should limit imaginations just to glass as a façade material? I would like to have breathing façades. I should have façades which let in pure air, at the same time does not allow conditioned air to go out of the building. These are advanced ways of doing façades.

They are not available at present. I would like to have them in our buildings of the future.

NG: Choice of façade material depends on the type of building – whether it is a commercial, healthcare, hospitality, institutional or residential building. It also depends on the kind of image the project needs to portray. Other key factors to consider are geographic location, needs of the client and his budget. All these factors help us to specify the façade material.  WFM: We see a lot of technologies in the western countries like movable shadings. How effective are they?

Buckley Court, Mumbai

 WFM: What are your thoughts on glass as a

material for future façades?

HC: Right now, glass is a very versatile material with double, triple and four layered glasses available. We have toughened glass, tempered glass, cavity glass, fritted glass or glass fitted with LED or solar glass panels and so on available in the market to suit various types of buildings. There are experts in such technology

OSHO Commune, Pune

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HC: Movable shading is a nice idea, though they cost a major let-down. Lots of people are using it today, more as an elevational treatment. They hardly are shading the façade. Are they really working? Is just orienting the window in the right manner is enough? How long will the movable façades last? Are they tested for wing resistance? All of these have to be considered answered. I feel that they are good if they are effective.  WFM: Tell us about your recent project/s in which

glass is used in an innovative way?

NG: In our project for Airtel at Gurugram, we have done one of the tallest curtain walling systems

Rusi Modi Institute, Jamshedpur

We redefine the future of modern india At Glasswall Systems, We provide turnkey architectural facade solutions where we translate the vision of our clients into reality. We are India's largest facade design, construction and installation company.

It is a balance of knowledge together with practical solutions that gives us the edge and helps us redeďŹ ne the city skyline

project : URMI ESTATE Client : KESHAV & CO.

BITS Extension Pilani

with coloured glass. We made the whole building a billboard. The façade reflects, rather represents the brand. Most of our IT and office building’s façades are made of glass and steel.

high-rise building. Everything is cost driven and one should assess the cost associated with each element.

Hence, it is obvious that façade design is not just driven by aesthetics or junction.

We have proposed a building with solar panels on façades. The skin of this proposed project for a Mumbai-based builder has got punctures and skin clad with solar panels. There is a buffer zone between the outer skin and the actual structure. The outer skin acts like an envelope or a shell, having a large surface area.

 WFM: Your firm is the most successful one in India and your creations stand out amidst many buildings.

Could you please tell us about your signature style and design approach?

Our BITS Pilani project is highly climate sensitive and designed underground to suit the harsh weather of the location.  WFM: Brief on the important factors to take care

while designing and executing façade for a highrise building?

NG: We do not have a signature style. We do every type of projects like ultra-modern buildings, classical buildings, gothic buildings, and many more. We are not limited to any particular style. Our style is driven by the requirement and aspiration of a client. We do not impose our designs on the client, instead we take the client’s vision forward through our approach and style.  WFM: Please brief on some of the opportunities

NG: Comfort of the inhabitants, wind loads, overall aesthetics, acoustics & thermal performance, safety & security, are a few of the important factors to consider while designing and executing façade for a

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and challenges faced by your firm?

NG: There is no fun without a challenge. Every challenge is an opportunity. It is a part of our job.

INDUSTRY SPEAKS

QUALITY IS OUR MIDDLE NAME Aluplex is recognised as the nationwide leader in the design, engineering, manufacturing and installation of façade and fenestration architectural glazing systems wherein they specialise in unitised curtain walls.

Incorporated in 1985, the company has transformed from a small aluminium window contractor to a multi-national enterprise. Aluplex now employs over 700 employees, having completed over 350 projects in 20 cities with exports to East Africa. Their high distinction is represented by a strong established infrastructure of two large manufacturing plants (spanning a total working area of 200,000 sqft) with a total of four unitised conveyor lines (capable of manufacturing over 200 panels per day) and an in-house central design and engineering headquarters in Navi Mumbai.

Navin Keswani, the Founder and Managing Director of Aluplex, is a ‘pioneer’ of the Indian Facade Industry and has been awarded the President’s Udyog Rattan Award in as early as 1985, for his excellence in the design of aluminium windows, and also the “Outstanding Contribution to the Façade Industry” at the inaugural ZAK Awards in 2017, besides being nominated in every single façade award category. Keswani has always strived to redevelop the design sphere, working in close collaboration with the best architects and renowned façade consultants from the preliminary design stage, aiming to provide them with eco-friendly, energy saving and economical façade solutions, and, thus aiding them in realising their concepts.

Navin Keswani spoke to Window and Façade Magazine (WFM) about their company, products, manufacturing facilities, services and their future plans and endeavours.

Navin Keswani Founder and CMD, Aluplex India Private Limited

 WFM: Please tell us about your company and yourself?

Navin Keswani (NK): Aluplex has been in the window, door and facade business since 1981. We started off as a window-door fabricating company in Mumbai and progressed to become one of the largest façade and fenestration companies in the country. Aluplex has built its reputation over brand credibility, which does not get built overnight. It is achieved only with excellence in whatever we do – excellence in terms of performance of the end product, customer service and team dedication. These three criteria took the company to super heights and helped us to earn an unparalleled name in the industry parse.

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Omkar 1973 designed by Foster+Partners

ICICI Bank, Hyderabad

To tell you a little about the company and myself, Aluplex was started 36 years back because we realised that there was a need for this product. I realised that I had a bent of mind to understand complex technical joinery. These strengths initiated me to start the business and grow the company and to evolve as one among the top ones. We started the façade business later in 1995, not accidentally, but intentionally.

external support. Fortunately, we got the right customer to explore this and the right architect to understand my vision, and thus the first structurally glazed building in the country was built - The Ramada Inn Palm Grove Hotel in Mumbai. It was in the year 1995, and it took almost 14 years to bring in curtain walling in unitised structuring to India. Nonetheless, it was a growth oriented journey though it had been a long process.

 WFM: Tell us about your journey which started as

a small window/door industry to one of the largest façade and fenestration companies in the country?

NK: To be honest, the façade and fenestration industry did not exist when we started the business decades back. Carpenters used to buy aluminium sections and glass from a local market and they themselves used to fabricate and install windows and doors. Gradually, we introduced factory fabricated windows and doors and that is how we started our business. At present, our main line of work includes creating facades and also focus on high-end windows and doors as a second offer to the customer in terms of fenestration.

During one of my holiday trips abroad, I was totally rammed by the buildings there. This trip helped me to observe, study and know more about the technicality of facades. In India, I spoke to builders to introduce those techniques in their buildings. It was not easy for me to convince that the glass can stick to the exteriors of any building with silicone without

Crossroads - The Mall, Mumbai

Jan - Feb 2018 WFM 89

GIFT Tower, Gandhinagar

We were the first company that brought in double glazing, powder coating, and unitised structural glazed panels in the country. We were also the first company to install conveyor lines to manufacture the unitised panels.  WFM: Please tell us about your vision and what

kept you going?

The Ramada Inn Palm Grove Hotel, Mumbai

process of toughening of glass and the use of it. There were only three toughening plants in India in 1995, and GSC was one of them. We used to conduct road shows and full-day seminars to create awareness about the new systems and products. By 2005, the market scenario changed and opened up. Suddenly there were two kinds of players - big boys and small boys – based on the business volumes and good infrastructure. Again

NK: We always had the vision to excel and a strong responsibility in offering the best quality. One can attain quality through best infrastructure management systems and processes. Slowly and steadily, we started building the needed infrastructure, importing systems and getting the right people as team members. ERP came in much later, which helped us to put all the management systems in track. The whole process fell into places which led to better infrastructure. We also faced many ups and downs while going through this process, majorly in 2008 when the real estate industry was hit due to the recession. Now the system has improved and many industrial fairs like Zak has opened doors for people to understand and experience new technologies and products.  WFM: When did you see the real change in the

façade industry in India?

NK: It took almost 10 years (1995 to 2005) for the country to witness the advent and growth of this industry. Even in 2005, people were not well-informed about the curtain wall systems, unitised glazing, powder coating,

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Century Bhavan, Mumbai

Aluplex factory

Aluplex came first to the forefront and in 2008, we set up the largest curtain walling and façade company in Hyderabad. We built a huge infrastructure with four conveyor lines and automatic CNC machinery.

Interestingly, today in 2018, there is more demand of the products. Therefore, we are planning to expand our business to meet the present needs.  WFM: Please tell us about your company facilities

Infrastructure like CNC machinery

CNC machinery and complete manufacturing plants, logistics, etc. In both our plants, we have a powder coating facility too. Both are very sophisticated and state-of-the-art plants with large areas for keeping stocks of materials and ready goods.  WFM: What has been your or your organisation’s

contribution in bringing about the current revolution in the façade and the fenestration sector?

and structure?

NK: Currently, I am serving as the Founder and CMD of the company. We have two full time directors, Karan and Rohan Keswani, who are my sons. They are well-versed in the field of façade and are vastly exposed to site works too. They have been educated and worked overseas as well as in production in foreign companies. Below them, there is a whole group of people who are experts and well-trained in their respective jobs like production, execution, contract management, documentation control, etc. Everything is professionally set and we have a number of departments headed by the right person.

It is interesting to tell you that we imported spiders for the first time in India from an Australian company called Austvision for the Hyatt Regency Hotel near the Sahar Airport in Mumbai, way back in 2002. We introduced the brand Kinlong into the country from China in 2003. The numerouno system window company like Shueco was also introduced by us

 WFM: Tell us about your production facilities?

NK: We have two large facilities - in Mumbai and Hyderabad. We have production lines for making over 120 unitised panels in Hyderabad and about 80 unitised panels in Mumbai per day, thus a total production capacity of over 200 unitised panels per day. In the Indian market, no other brand is ripe enough to reach this level since we have the best infrastructure like

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IL&FS, BKC Mumbai

Hyatt Regency, Mumbai

DLF Cyber Park, Gurugram

in the year 2006 for a project in Mumbai. We were the first to use sunshade louvers from China for a project. Same about façade cleaning systems (Cradle Runways) and reflective glass for facades. These are a few of the firsts that we brought in the country. Thus Aluplex has played a major role in revolutionising the façade and fenestration market.

Besides, we also brought many foreign consultants in the country, who were introduced to many architects and builders, and played a major role in shaping the modern day architecture in our country. This brings a sense of happiness and fulfilment by giving back to the industry.  WFM: Could you share the details of your iconic

and innovative projects?

NK: Every project we do is very important and has its own character. Some of the projects done by us were very different and challenging. One of the major challenging projects was the country’s first mall which we did – the Crossroads Mall in Mumbai by Piramals.

When we completed the project, there were hordes of people waiting to get in and see the structure done in glass and aluminium, designed by DP Architects.

Almost at the same time, we did two other projects with unitised structural glazing and aluminium cladding for CitiBank and IL&FS at BKC, Mumbai, which took India by storm. Both are towering structures in terms of volume of work, complexity and workmanship. The projects had huge skylights

Lodha The Park, located in Lower Parel, Mumbai

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Bolted Glazing installed in Godrej One, Mumbai

installed and curved aluminium profiles are used in both the structures. These two projects were iconic from the beginning.

But I think the most iconic project till date has been the ICICI Corporate office building in Hyderabad, which was the largest façade project of its time. The Godrej One building in Mumbai is also one of its kind with a range of complex façade elements coming together to create the architectural intent desired by Pelli Clarke Pelli of New York.

Right now we are working on the huge project Omkar 1973 designed by Foster+Partners. This would be the tallest residential building in India handed over to date.

We are also working with the Lodha Group on their two buildings for the project ‘The Park’ as well as our working with DLF in Gurgaon on their Flagship IT SEZ called DLF Cyberpark. These buildings are statements by themselves. The facades for these projects are very different from each other and different skillsets are required for the execution of each of them.

Godrej One, Mumbai - one of its kind with a range of complex façade elements, designed by Pelli Clarke Pelli of New York

they organise are very educative and eye-opener for many. Magazines like Window and Facade too help a lot in disseminating information on various developments in the industry. Now, people are wellinformed of what they want to buy.

Today, there are suppliers for every brand present in the country - be it Saint Gobain, Kinlong, Gissee, Laval or Siderise. Through exposure in platforms like Zak Expo and also in media, the suppliers reach out to the decision makers, including developers, procurement managers, architects, fabricators, etc. They are able to decide the product based on the projects, functionalities, technologies and specifications given by façade consultants.

Based on the design parameters, drawings or elevations of a project by the architect or

 WFM: You interact with many architects, civil

engineers, façade consultants and of course, many builders. How do you help your customer to choose the right product?

NK: By and large, today’s customers are welleducated about the products. The architects are well updated on latest technologies and products.

Trade fairs like Zak plays a major role in spreading knowledge and enlightening clients. The seminars

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Bank of India, BKC Mumbai

Platina, BKC Mumbai

consultants, we do a finite element analysis and bring in sophisticated and right software to create a value engineered proposal, where in a builder or architect will get more for less, i.e., at a correct cost or price.

One can see options available for different budgets which help in taking the right decision.  WFM: So many products are available in the

market. How do you gauge the effectivity of the same?

NK: As mentioned earlier, there is no dearth of products available in the market. Gauging the effectiveness of the product is very important and critical. Suppliers of all these façade and fenestration products have their local offices, though they are foreign companies. They have their representatives and warehouses in the country.

The brand representatives suggest the correct product after understanding the requirements of the owner, architect and the façade consultant. Value engineered to cost proposal need to be offered by the brand representatives. They need to bring the sample to the table along with specifications, which need to be studied and joint decision should be taken.  WFM: As per your view, how important is the

role of the right façade system in achieving desired aesthetics, optimum performance, acoustics and thermal insulation?

NK: Façade by itself is a standalone/independent wall structure of a building and it has to withstand

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Hotel Crowne Plaza, Ahmedabad

wind loads, dead loads, seismic movements and most importantly, structural forces over a period of time. If you don’t know the right façade system for the building, then everything fails. It starts with air leakage, then leads to water leakage, wrong bracket fitting and structural deformity. All these could be taken care of if a façade is correctly designed and engineered. Right design caters for the best system performance. One has to couple it with the correct type of glass in terms of the colour, precise glass parameters, coefficient, etc. Along with these, we should look at the right acoustic details to bring down the sound levels and the db levels. As far as the thermal insulation is concerned, analysis of the geographical condition is important, and based on that, thermal insulation principles are applied and right façade is installed.  WFM: What is the importance of testing the

facades installed and the products used?

NK: It is very important to get the products tested.

The hardware which comes with the system are tested by the manufacturer for certain approved standards (by ift Rosenheim or so). Our products are all pretested as per certain parameters. There are post-test laboratories like Winwall in Chennai, FITI in Mumbai, to test the façade samples for its efficiency.

There are a few testing centres in Dubai too such as Thomas Bell-Wright International Consultants and Al-Futtaim. Every single unitised curtain wall system designed, engineered and extruded by Aluplex is tested in one of the four centres.

National Stock Exchange, BKC Mumbai

 WFM: What are the criteria for choosing glass in a typical high-rise project?

NK: Glass is a very important component of the entire façade. It normally comprises about 20 to 30 percent of the total façade cost. The criteria for choosing the glass involves architect in deciding the colour, the façade consultant looking at the performance with reference to the intensity of light and heat, the low e properties, the coefficient of the glass.

There are six factors to be considered - the shading coefficient/solar heat gain coefficient, U-value of the glass, relative heat gain, external reflectivity/ internal reflectivity, visual light transmittance and accoustic attenuation value.  WFM: Coming to execution, what do you think are the main hurdles/bottlenecks in Indian construction scenario in terms of façades?

Similarly, there are some projects with specifications with low U-values without any stress on the shading coefficient, whereas the shading coefficient is more important in tropical climates, as majority of the heat gain is by radiation and not conduction.

Lastly, is the lack of availability of skilled site personnel. Therefore, we at ALUPLEX, have an internal training programme that we have developed over the years, and have a team of skilled site supervisors and engineers whom we have groomed over the years. Unfortunately, we are the one Indian company which is known as the “Training School of Façade Engineering” as almost every other façade company strives to hire/employ personnel who have been trained and groomed at Aluplex.  WFM: How important is the correct installation of

selected facades?

NK: One of the major challenges in façade execution in the country, is the lack of knowledge of the stakeholders involved. Often, the various stakeholders do not have the technical know-how and understanding of the subject.

For example, very often, developers award the façade contract for a project after the completion of the civil works, without understanding the lead times required for design and procurement prior to the production and execution at site. Thus, there are lapses in planning.

98 WFM Jan - Feb 2018

NK: The correct façade is a combination of the correct design, procurement, production and installation. However, the design plays a pivotal role in connecting all the elements, wherein ingenious and innovative design ensures that the selected facades use the apt materials (procurement), whilst ensuring efficient production, and most importantly simplifying the installation work done at site. Thus, we strive to limit the number of mistakes possible by site labour, by ensuring the majority of the assembly is done at our production facility and

TSI –Waverock SEZ, Hyderabad

limiting the skilled workmanship required at site.

Additionally, at the same time, we have the most experienced and skilled site team with an army of supervisors, engineers and site labour, some of who have been with Aluplex since the inception of curtainwalling in India. Thus, we ensure that the final product delivered is flawless and are able to create the feeling of customer delight in the hearts of developers and architects.  WFM: How do you see the façade and fenestration

industry evolving over the next five years?

NK: In 1996, there were only three toughening plants as I mentioned earlier. And I had predicted that by 2005 there would be 100 toughening plants.

You will be surprised that by 2015, there were about 187 toughening plants in our country. It just tells about the growth of the industry. This is a very large industry and there is a lot of scope. I see the next five years in the same way. Tremendous growth is foreseen in terms of number of fabricators and volume. A large number of small players will become large industries and a few of the big players will disappear or exit.

The market is very ruthless and it demands the correct price for the value engineered product. In the next five years we will see a whole lot of professional game players, and most of them will be Indian brands.

Foreign players might not dare to enter the country since ours is a complex market to work with.

TRIL - Ramanujan IT City, Chennai

The volume of business will increase and boom in the next five to seven years. It takes a good five to seven years to build a complex structure. Today there are about 70 super structures and about equal numbers of complex structures being built or are on the drawing board of architects. All these will get completed in the next five to seven year. This growth by itself is going to be stupendous.

Building tall structures in India are not as easy as doing the same in Europe or Hong Kong or any other places abroad, may be because of lack of knowledge and many other pitfalls of the industry. We need better safety rules and educate the labourers about the same.  WFM: What advice would you like to give to the manufacturers/fabricators of doors and windows in India?

NK: One has to produce the ‘best quality’ - be it the hardware, extrusion products or processed double glass. The quality has to be maintained while bringing them together in the form of complex joinery in desired shapes, also while erecting on the site and installing as a curtain wall, window or door. The end product has to be superior in every way, which can withstand all calamities for the next 20 to 40 years.

My sincere advice to all is to stick to quality. Quality should be the middle name.

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McCoy Soudal are proud to be members of:

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Project Watch

Façade Design Approach for Healthcare Projects National Cancer Institute, Nagpur About the Authors: Hiten Sethi, founder and principal architect at Hiten Sethi & Associates, is an architect extraordinaire with relevant international recognition for his work. The Navi Mumbai Municipal Corporation (NMMC) headquarters, is one of his most famous structures and India’s first green government building. His expertise lays in land development, commercial, residential, institutional projects, administrative, social and healthcare projects and master planning. Sethi believes in ‘creativity with a sense of practicality in architecture’ that works for modern day living. He lays great importance on quality and speedy delivery, with a focus on understanding and meeting the client’s needs and budgets. He is known for his sensitivity to local culture and climate; his enduring structures that aim at sustainability and co-existence. Sethi’s novel approach has helped built long-term relationships with clients, who keep coming back with new projects for the firm.

Hiten Sethi Founder, Hiten Sethi & Associates

National Cancer Institute, Nagpur

Design of appropriate building facade plays a very important role for healing in health care projects.

Façade protects the people occupying the building

and plays a major role in regulating the indoor environment.

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South facade of the project

Designing smart building envelopes translate in to both tangible and intangible benefits. The tangible benefits can be - reduction in consumption of building materials, energy and operation and maintenance costs. The intangible benefit are better assistance in patient’s recovery and healing along with reduction in stress and improvement in the overall health care environment which can be achieved as an outcome of physical and visual connections to the natural environment along with thermal and acoustic comfort.

Designing and material specifications of the building envelope play a major role in determining the amount of energy a building will use in its operation. Design of building facade is governed by the performances expected out of it.

The basic performances expected out of a building facade are:  Providing thermal comfort  Providing acoustic comfort against the external noise  Enhancing indoor ambience by providing adequate task based day lighting  Protecting the indoors from wind and rain while maintaining adequate visual connectivity to outdoors  Control of air infiltration  Ease of maintenance  Aesthetics The National Cancer Institute (NCI) is proposed as a state-of-the-art 500 bedded, oncology centre, one of its kind specialty hospital for cancer treatment in Nagpur. Spread across an area of 23.5 acre site, the institute plans to fulfill its mission in three key

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Aeriel view of the project

phrases, incorporating comprehensive cancer centre, palliative care and sustainable charity.

The city of Nagpur enjoys a very dry or semihumid climate throughout the year except for the monsoon months of June to September. The climate of Nagpur can be broadly divided into three seasons, such as summer, where temperatures rise beyond 40 degree Celsius accompanied by dry winds making the climate scorching hot, monsoon which is heavily dominated by south-westerly monsoon winds and the winter, which brings in the spine chilling cold. The tremendous climatic variation with scorching summers and chilling winters make the process of designing climate responsive buildings a challenging one.

There are certain challenges for maintaining human comfort in the building with reference to façade and fenestration. The overall elevation had to be designed in such a way that it made the building look approachable and yet create a sense of security and hope in the heart of the patients. One of the most important performances required from the façade of the building was to keep out the heat of the sun in summers and encourage the penetration of its warmth in the indoors during winters. However, the challenges were countered by creating symmetry in the elevation which imparts the image of a healing centre with confidence.

The bold and confident character of the structure has been achieved by creating symmetry in the elevation which imparts the image of the healing centre with confidence. In this project, functionality has led the way and has evolved into aesthetics.

4/56, Somanur Road, Muthugounden Pudur, Sulur, Coimbatore 641 406 TamilNadu, India Mobile 98422 08890 Email : profiles@simta.com / ganesh@simta.com, Web : www.simta.co.in

Materials Used For Facade & Fenestration: a. The curtain walls are designed as semi-unitised glazing in diamond shape grid, straight grid, semi-unitised glazing with horizontal fins and semi-unitised glazing with vertical metal fins. b. The glazing at main entrance point is designed as the fixed spider glazing system. c. The glass railing is designed as Aluminum ’U’ Channel system.

The features of the façade are composed with less of glass and more of mass on the exterior to reduce the heat penetration into the building. The glass to wall ratio is maintained at 22 percent. Glazing equivalent of 24 mm thk DGU reflected glass shall be used.

Study of sun path diagrams and wind analysis are done to design elements like sun shades, deeper recesses; and aluminum louvers for fenestrations are incorporated to optimise requisite task based lux levels and indoor temperature. The detailing of parapet walls and roofing is designed to allow the terrace gardens to flourish, these gardens helps to lower the amount of heat penetration into interiors of the top floor which in turn contributes in reducing the load on HVAC system in summers.

The curtain walls are designed as semi-unitised glazing in diamond shape grid, straight grid, semi-unitised glazing with horizontal fins and semi-unitised glazing with vertical metal fins.

In the semi-unitised glazed system, the vertical mullions and horizontal transoms are installed on MS/SS/aluminum brackets which are anchored to the columns/slabs. The glass is cut to size and is structurally glazed to the aluminum sub frame by structural sealant. The sub frame with the glass is installed on the grid work. In the above system 50 percent of the work is done at site.

This system aluminum members are not visible from outside, only the grooves running horizontally and vertically get seen. For the installation of this system, scaffolding from outside for installation needs to be erected.

The glazing at main entrance point is designed as the fixed spider glazing system.

This system has been designed together by engineers and architects with a main objective of getting the most possible transparency and thus the clearest vision which is normally hindered by

The image showing semi unitisedfaçade glazing in diamond shape grid, straight grid, horizontal fins and vertical metal fins.

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McCoy Group are proud to be members of: uPVC Window and Door Manufacturers Association

CCPS

using the various constructing elements. The spider system offers the most practical solutions to glass assembly.

To fix the glass up at the edges of the facade, one or two arms-accessories can be used. In special applications, the number of arms might be more than two and the sheet of glass can be fixed by one arm at each corner. The used accessories can be mounted against metal frames or against glass fins and tension rods are used to pull these accessories together.

The glass railing is designed as Al.’U’ Channel system.

The glass railing is designed as Aluminum ’U’ Channel system, visually giving a light feel to the elevation.

The façade of NCI is also designed based on wind analysis.

during designing of the façade and selection of the building material for the same.

Elevation features arrived at as a response to the sun path diagram in Nagpur.

The building is oriented in such a manner that the shorter sides face east and west direction thereby reducing the surface area exposed to the early morning and late evening penetration of sun rays during hot summers.

1. Sunrays penetration in East elevation during spring equinox i.e. 21st March The elevation of the building on east and west is designed as an inclined surface with the roof overhang extending beyond the façade and has horizontal fins on the vertical façade designed such that it obstructs most of the sun rays coming inside the structure from 10 am to 12 noon and 2 pm to 5 pm

As per the wind analysis, the basic wind speed in Nagpur is around 44 m / sec. The risk coefficient to be considered for façade design i.e. K1 = 1 .The structure is identified as Category – 3 i.e., the structure located in terrain with closely spaced obstructions upto 10m height and falls under building class – C i.e., structure having length greater than 50m. The topography of the site is general plain ground and has K3 = 1. Wind pressure for full height of building is 1.5 KPa and wind pressure upto 10m height from the ground level is 1 KPa. All the above factors are taken into consideration

Sunrays penetration in East elevation during Spring equinox i.e. 21st March

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Shadow of building during summer solstice i.e. 21st June

Sunrays penetration in south elevation during winter solstice

South facade of the project

thereby reducing the heating of the space in summer due to direct radiation.

2. The longer side of the building is oriented towards south.

The south façade is designed as the longer side of the building with a straight vertical façade and has horizontal fins on the vertical surface designed such that they allow the penetration of the direct sunrays inside the building such that it helps in warming up the internal spaces during the chilled winter days.

Use of these design strategies for façade help in reducing the cooling and heating load on HVAC systems thereby reducing the energy consumption of the structure.

Fire requirements The openable vent of minimum 2.5 per cent of the floor area shall be provided as per fire requirements.

The openable vent can be pop out type or bottom hinged provided with fusible link opening mechanism and shall also be integrated with automatic smoke detection system.

An opening to the glass façade of minimum width 1.5m and height 1.5m shall be provided at every floor at a level of 1.2m from flooring facing compulsory open space as well as on road side. Minimum one such opening shall be provided at the interval of every 15m.

Material used for cladding shall be non-combustible and shall not emit toxic gasses and it shall be ecofriendly.

The project is in compliance with both National Accreditation Board for Hospitals and Joint Commission International (JCI). The project is based on the values of functionality, sustainability, energy efficiency, safety and aesthetics with features designed to target Gold Rating under IGBC Green New Building Rating System.

Quick Facts Project: National Cancer Institute Location: Nagpur, Maharashtra, India Client: Dr. Aabaji Thatte, Seva Aur Anusandhan Sanstha Architects: Hiten Sethi Architects, Mumbai Build-up area: 7,00,000Sq.ft Consultants: M/S Mahimtura Consultants (Structural Design), M/S Godrej & Boyce (Sustainable Design) Commencement date: February 2015 Completion date: August 2017 (Phase 1); December 2018 (Phase 2)  Jan - Feb 2018 WFM 107

Project Watch

The Falling Lotus Blossoms EON IT Park, Pune About the Architect:

©Pixeldo Media

John Marx is responsible for developing Form4 Architecture’s design vision and language in his role as design principal. He has designed more than 150 buildings in 11 different countries. He has an expertise working on a diverse range of complex building types, including corporate campuses, fitness facilities, civic and mixed-use buildings, retail and hospitality projects. John is the recipient of numerous international design competitions and awards.

As collaborative partners in the design process, the principals of Form4 Architecture -Robert J. Giannini, John Marx, Paul Ferro, and James Tefend - are personally involved with every project from concept to completion.

Since 1999, the firm has built a rich portfolio of award-winning work for national and international clients within diverse market sectors. Based in San Francisco, the firm focuses on creating eco-friendly and aesthetic designs, which are conceptually thoughtful, reflective of the client’s values and goals.

EON IT Park, Pune

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John Marx, AIA Principal, Form 4 Architecture

Located in the seventh largest metropolis in India, Falling Lotus Blossoms: EON IT Park is an elegantly arranged quartet of buildings, totalling 400,000 sq m, that occupy a site located in the EON Free Zone, a Special Economic Zone established by the government to encourage development.

This 21st century workplace, which sets a grand scale in counterpoint to the rugged Indian countryside, overlooks a river and the fields beyond on a flat site that was previously almost entirely untouched.

uPVC Window and Door Manufacturers Association

uPVC Windows and Doors Manufacturers Association

uPVC Window and Door Manufacturers Association is a non- pro t body, formed to create value proposition bene ting all from use of uPVC windows across India.

Working Together is Success..!

Mission 2020- Getting together is getting powerful!!

We are supported by - MSDE | BIS | BEE | CPWD | NBC | GIZ

Our strength is our MembersWindow Manufacturers: 48* Pro le Extruders: 8* Associates: 28* ..and Counting!

U-RC (UWDMA-Regional Conferences) has established Cost Factor-An estimation Analysis events across all major cities in the country.

UWDMA is striving to establish Green revolution in India and bring uPVC to the forefront.

APPROACHING 100* MEMBERS, UWDMA INVITES EVERYONE TO JOIN .. www.uwdmaindia.org

+91 9871186182

info@uwdmaindia.org

©Navdeep Soni

Form4 Architecture began the design as different iterations of the petal shape from India’s national flower, the white lotus. Ultimately, four “petals” were arranged like a four-leaf clover in plan with an open space at its centre. In part, a response to the extreme heat and humidity and the goal of populating the outdoor spaces for more than just a few months of the year, the buildings themselves contain semi-conditioned, shaded atrium spaces that serve as meeting or gathering areas for the building occupants. At dusk, each courtyard morphs into a giant kaleidoscope by the delineation of building elements with neon lighting.

The steel and glass buildings received LEED Gold status, in part, due to the double-glazed high-performance glass walls. A 20.09 per cent energy savings (against the ASHRAE base case) is a result of additional energy conservation measures incorporated into the project, including under-deck insulation in the roof, efficient lighting design, occupancy sensors, wall insulation, and a Variable Refrigerant Volume (VRV) system in office areas.

©Fotohaus

Raised on the ground plane, the complex picks up a teleological dimension in that it becomes a quasitemple devoted to the future of technology and its own iconography. As the eye follows the sweeping shape of the roof line, a vivid image of the fluid plane emerges. The building opens up and embraces the users of a new society. This iconic project, both in its construction phase and completion, exemplifies technology as a trans formative force for the language of architecture in a fast-growing country like India.

Day view of the building

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The steel and glass buildings received LEED Gold status

©Navdeep Soni

©Fotohaus

Another view of the project, from the amphitheater

Architecture is inherently sustainable when the design intent springs from a genuine commitment to the betterment of society. This ideal was applied to the Falling Lotus Blossoms project, resulting in a LEED Gold rating. The strategy included addressing energy needs, water use, waste, materials, and heatisland effect.

©Fotohaus

The project achieved:  68 per cent reduced water use. A 7,481,054-gallon reduction of water use was realised through the use of gray water and water-saving fixtures and

The architecture of the building is inherently sustainable

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The double-glazed high-performance glass walls

©Navdeep Soni

©Fotohaus

Additional energy conservation measures like under-deck insulation in the roof are incorporated into the project

©Fotohaus

sensors, as well as with the efficient use of water in landscape, including rainwater harvesting and high-efficiency irrigation systems.  100 per cent of the wastewater generated at site is reused in landscaping. An on-site sewage treatment plant (STP) treats the water for reuse.  98.18 per cent of construction waste was diverted from landfills. Waste diverted from landfills includes reinforcement steel, cement bags, plastic, broken tiles, paint cans, cardboard, aluminum scrap, concrete cement, and broken bricks.

High solar reflective index (SRI) materials are used to cover 100% of the roof area

 75.60 per cent of the total project’s materials, by cost, were manufactured within 500 miles of the project site. Among the materials sourced regionally are bricks, cement, fire-proof doors, pozzocrete, steel, metal sheet roofing, glass, dry wall, and false ceiling.  100 per cent underground parking. To assist in the reduction of a heat-island effect, all 2,226 car parking spaces and 202 two-wheeler spaces are underground. Electric charging stations have been provided for 67 car parking spaces and six two-wheeler parking spaces.  100 per cent roof coverage. The project used high solar reflective index (SRI) materials to cover 100 per cent of the 145,000 sq ft of roof area.

QUICK FACTS Project: Falling Lotus Blossoms: EON IT Park Location: Pune, Maharashtra, India Client: Panchshil Realty Architect: Form4 Architecture Local Architect: NPAPL Architects Materials used for façade and fenestration: glass and metal Commencement Date: 2005 Completion Date: 2014 Area: site-45 acres; building area-400,000 sq m equally in 4 buildings; building footprint-67,000 sq m; number of floors - 6; building height-27 m The building opens up and embraces the users of a new society

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

Project Watch

Striking Urban Façades About the Architect: Stephen Coates is an internationally acclaimed architect based in Singapore. He began his distinguished architectural journey from London and also worked with Hong Kong-based practice Aedas as founding executive director of the firm. After having worked with renowned firms, he established his award-winning firm aCTa, based in Singapore, in 2004.

The firm leads various architects and consultants across Asia for a wide range of sectors, including residential, master planning, offices, retail, hospitality, industrial and infrastructure. Their major works range from designing/remodelling of an 800 ft micro house in Kensington, London to a 5,000 acre master plan of a new town in China. Notably, the firm has overseen the design and completion of the tallest residential complex constructed in Kolkata and the entire Eastern India.

Stephen Coates Executive Director and Principal Architect, aCTa

aCTa has been designing and delivering buildings in India, primarily Kolkata since 2004. Some of the projects have been completed or are close to completion so far. Each project appears to be quite different on the surface, however, they demonstrate certain similarities in response to two key questions - quality engineering and the environmental impact on marketability.

Most of aCTa’s designs in Kolkata are built without a main or management contractor. This presents design challenges at critical junctions between sub-contract packages leading to poor execution, and which can lead to design failure such as water penetration.

The four projects featured below fall in to two camps: single package external envelope and multiple package external envelope.

Altius - a 27-storey luxury apartment complex at Christopher Road, Kolkata

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Single External Envelope Contract Package: a. Full glazed curtain wall – single contract package b. Full louvered rain-screen cladding

Unimark Asia’s new 16-storey Headquarter office in downtown Kolkata

Separate Packages: a. Windows and precast RC panels b. Windows and external louvres Not surprisingly, the projects with single contract package enclosures were or are being delivered quicker and to a higher quality of finish and provide better protection against the elements. Furthermore, having a single sub-contractor responsible for the whole external envelope means less chance of failure and better warranties.

Environmental Impact on Marketability: With the increasing understanding of the damage that CO2 emissions are doing to the health of the planet, the market is demanding better environmental performance from buildings, and the construction industry is addressing these failures through initiatives such as the Indian Green Building Council.

Three buildings have achieved a Gold or Platinum rating from IGBC. The design of the façade is fundamental in each case. Facade design details of two projects are discussed in detail.

Urbana is the largest and tallest private residential development in east India

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Case Study

Judicious Incorporation of Timber Effect Crosswinds, Kolkata

On a site with stunning views over the gardens of the adjacent German Embassy, A6, Hastings Park Road, Crosswinds is a 10-storey luxury apartment development in upmarket Alipore. Lying derelict for 30+ years, planning permission was granted to reconstruct the building, on the condition that the core and height of building were unchanged. The challenge was to accept these restrictions and still create luxury apartments for the 21st century. aCTa achieved this while creating two much larger and Vastu compliant apartments per typical floor, instead of the four smaller units planned originally.

The architecture of the building is derived from the judicious use of beautiful timber effect vertical sliding aluminium louvre panels that help to achieve the following:  Provide the owners some protection against the low east and west sun while allowing the apartments to be fully naturally ventilated  Provide privacy  Cover up the ugly existing structural design that could not be altered to create a strong modern aesthetics  Supplied and installed by one single sub-contract package to minimise package interfaces

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The timber louvres are actually aluminium with a special powder coat finish painted and textured to resemble wood. Aluminium is preferred for its light weight and less maintenance than real wood.

Quick Facts Project: Crosswinds Location: Hastings Park Road, Alipore, Kolkata Developer: Keventer Projects Floors: 11 Completion of the project: 2017

Case Study

Redefining Residential Architecture Urbana, Kolkata

At 350,000 sq m and 170 m height, Urbana is the largest and tallest private residential development to have been completed in East India in recent years and is the recipient of numerous and prestigious Real Estate Awards from CREDAI, CNBC and CMO Asia Real Estate.

Set on the eastern edge of the city, phase 1 comprises seven towers providing 1,170 units and 40 detached bungalows set in 60 acres.

All apartments are orientated either north or south to provide optimal views away from the low sun, and enjoy the wonderful cooling south-easterly breeze that wafts in from the Bay of Bengal, thereby minimising the need for air conditioning.

The characteristic and precast giant ‘jali’ (screen) satisfies a number of design intents:  Break up the monotony of stacks of identical windows  Give depth to the façade, and some shading/ protection from heavy rains  To create an organic effect while unifying the 7 towers into a cohesive composition

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Altogether over 12,000 windows and 12,000 precast panels were installed. Construction of the in-situ RC structure used aluminum form work which improved quality and speed of construction immensely.

Achieving a project of this scale and quality has taken a huge effort by the whole team including 3,000 people on site for the past 6 years. aCTa and the Urbana team are currently developing the design for phase 2 which will feature three 50-storey residential towers designed to complete the full composition of 10 towers providing almost 2,000 apartments and 500,000 sq m of luxury accommodation.

Quick Facts Project: Urbana Location: Anandapur Road, Kolkata Landscape Design: Green Architects, Bangkok Structural Engineer: Predrag Eror, Dubai Status of the Project: Completed (Phase 1)

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Building maintenance system by Appletree

APPLETREE BUILDING MAINTENANCE Founded in the year 2005, Appletree Building Maintenance is led by Sunil Malhotra as the Managing Director of the company. So far, Appletree has completed more than 150 projects successfully by working hand in hand with the concerned teams at the site. The company focusses on safety aspects and ensures that all its products comply with international standards.



For one of the big projects, the company imported a fully automatic system called a Building Maintenance Unit (BMU) that can be controlled by a remote to reach any part of the façade. In the process, the company was able to create a similar type of machine. This is the first time that a BMU is made indigenously and successfully handed over to the client.



The Core Business Activities of Appletree:  Consultancy, designing, manufacturing, supply and

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

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installation of permanent façade access system for high-rise buildings.

‘Annual Maintenance Contract’ for operation and maintenance of the façade access system installed as well as façade cleaning.

Import, sale and rental of ‘Temporary/ Permanent Access System and Equipment’ for construction and maintenance of high-rise buildings.

Maintenance of high-rise buildings such as refurbishment and glazing rectifications.

Providing housekeeping services to its valuable clients.

 Manual Access System: These are spiderman on eye hooks/ jibs to access the hard to reach areas where there is almost no feasibility of any other system to access.  Partially Automated Access System: It is used to carry the persons in the cradle which moves up and down automatically  Fully Automated Access System: It is called BMU/Roof Carriage system which is mounted either on RCC roof top/parapet.  Ground to Top Access System: The system is used where there is no access to roof and very useful for cleaning and maintaining atriums, receptions, etc.  Gantry System: Help to access the skylights from inside the building and the area below the connecting bridge of the building if any.

Advantages of Access System/ Solution:  Since the access is automated, it replaces the long hours of labour and hence more efficient, effective and cost saving in the long term.  Access system is less expensive as compared to conventional cleaning.  It is safer as it contains numerous safety features.  More areas can be cleaned in short time.

For more information, contact: Sher Singh Regional Sales Manager Appletree Building Maintenance Pvt. Ltd., Plot 176, sector 8, IMT Manesar, Gurgaon, Haryana, India 122050 e-mail: shersingh@appletree.co.in Mobile no: 09205341755

POST EVENT REPORT

UWDMA HOLDS ‘UWDMA-VISION 2020’ MEETING IN GOA

“UWDMA Vision 2020” in Goa

The uPVC Window and Door Manufacturers Association (UWDMA) held its meeting “UWDMAVision 2020” in Goa. The meeting reviewed the accomplishments of the year 2017-2018 and chalked out a set of activities and missions to be achieved by 2020. All the key players and members of the association attended the meeting.

With a warm greeting by Amit Malhotra, Marketing Head and Treasurer of UWDMA, the event proceeded with the highlight of the core agenda of the meeting.

This was followed by a keynote address by Mario Schmidt, President of UWDMA. He gave updates on various developments of the association, including the meeting with the government of Jaipur to finalise the MOU for setting up of UWDMA training centre at ITI Bhiwadi, UWDMA to get official status of TPA registered agency soon, which is in the process, formation of working teams for UWDMA certified Window Manufacturer programme, etc.

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On the financial front, Malhotra announced that the financial year 2017-18 was a positive and successful year for UWDMA. He shared that the strength of UWDMA had grown impressively with the addition of 41 members in last 6 months, and many had applied for membership, which are currently in the process of discussion. He explained about the primary roles and responsibilities of regional members in details, and discussed about the proposed planning and execution of future ABCD (Architects, Builders, Contractors, Developers) events.

UWDMA’s Secretary Satish Kumar also apprised on the recent initiatives of UWDMA, including submission of preliminary drafts on uPVC standards to the Bureau of Indian Standards, technical team to complete installation manual by June 30, 2018, etc.

He expressed that 2017-18 so far has been actively successful for UWDMA in creating mass awareness and adding value to the industry.

All the key players and members of the association attended the meeting

Besides, many healthy brainstorming discussions took place among its members. During the discussion, Schmidt advised all members to come forward with donation and assistance for skill training centre at Bhiwadi-ITI. He announced that Lingel will donate one lakh for the training centre for acquiring machines and other required equipment. They also discussed rigorously to concretise their initiative on the UWDMA certified window manufacturer programme.

To raise more awareness about the benefits of uPVC doors and windows, the association is set to invest on social media and campaign which will help in disseminating the right information to the end-users. They also analysed the market scenario with interesting insights from the members on the quality and value of uPVC vs aluminium system.

They noted that the importance of bringing more

The event commenced with a warm greeting by Amit Malhotra

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innovation to stabilise the market instead of price relaxation. Further, the discussion emphasised on the enforcement of certain guidelines and standards for the Indian market to enable filter between the good and bad quality.

A jam-packed session

Enthusiastic UWDMA members at the event

WINDOWS

BUZZ NEW FAÇADE LIGHTING SYSTEM AT RASHTRAPATI BHAWAN The Central Public Works Department, Ministry of Housing and Urban Affairs has this year installed the new dynamic façade lighting system at Rashtrapati Bhawan (North Block and South Block), a monumental heritage buildings of international importance.

Earlier façade lighting was done through conventional lights i.e. GLS/metal halide/sodium vapour whose light efficacy was very poor in comparison of present LED light fixtures. This LED fixtures has around 1 lakh burning hour whereas earlier light fixtures were around 10,000 burning hour. New lighting system has computerised

control having unified power and data cable for easy installation and maintenance with automation in selection of colour combination scheme using opti-bin technology, selection of timing, facility of dimming, switching on/off facility, individual/ combined control of light fittings, etc. through Ethernet based controller. This lighting system has got features to produce multicolour combinations, enhancing the architectural features of the buildings. This system is energy efficient as well as cost effective.

Meanwhile, dynamic facade lighting having 130 narrow and

wide beam energy efficient LED fittings with 16 million colour combinations was installed recently at India Gate. The lighting system will save 75 percent energy saving compared to conventional light fittings.

LINGEL OPENS ITS FIRST SHOWROOM IN MUMBAI Germany-based Lingel Windows & Doors Technologies Pvt Ltd has opened its first showroom in a prominent area in Mumbai.

The showroom is one of its kind situated in the heart of the city. It is a significant move for Lingel to roll out a new showroom after its flagship showroom in Delhi.

The showroom was inaugurated by Mario Schmidt, Managing Director of Lingel, along with the presence of other members of the company from Belgaum, Goa and Pune.

After the inauguration, Schmidt said, “This showroom is a very vital move for us in Mumbai as it will help create a trust factor with our customers. Our customers will have an easy access now to take a look at the products that are displayed and make a choice easily. We are hoping that this will boost sales and our new line of

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products will be appreciated. We are eagerly waiting to welcome our clients to our showroom.”

The company’s initiative to open a showroom in the most happening city of the country demonstrates its expansion plans of the company. However, the company has already created a niche in the

door and window space with its presence in 22 cities across India.

Lingel is one of the leading manufacturers of uPVC doors and windows, and has been in India since 2006. Having a sound background in building/construction projects, Lingel also provides the cutting edge technologies and services.

CMC LAUNCHES AN EXCLUSIVE COLLECTION OF NATURAL STONE ‘9TH AVENUE’

Classic Marble Company (CMC), one of the leading stone companies in India, has announced the launch of a new exclusive collection titled ‘9th Avenue’.

The collection comprises the rarest and most exquisite natural stones with limited edition. The company said that first choice of materials will be showcased at CMC’s boutique gallery in Silvassa and will be eventually also made available at the exclusive showroom in Bhandup, Mumbai.

The products are handpicked varieties of choicest stones sourced from across the world by a highly experienced team of stonologists.

Amit Shah, Managing Director of CMC, said, “The product range offered through 9th Avenue will be a limited edition of natural stones targeted at an elite audience. Accessorising the space with 9th avenue products will add an extra glamour quotient to your prestige. It is a collection of limited edition semi-precious and exotic stones and a stroll through the 9th Avenue gallery will boggle one’s mind with breathtaking, incomprehensible beauty of the stones.” CMC will arrange helicopters for their priority customers to facilitate their travel from Mumbai to the opulent gallery in Silvassa.

Presently, the company offers over 500 varieties of imported natural stones including marble, granite, travertine and onyx, among others. With vast experience in the domain of stones, a dedicated team of stonologists will source the products. The stones will be merited based on various characteristics including its chemical composition, age, consistency in colour and strength among other factors that determine its uniqueness and pedigree. The products are versatile and can be used for all kinds of applications. The resulting installation promises to give a sense of art to the applied space.

OTTIMO INTRODUCES L7DOORS FROM LUALDI Ottimo recently introduced a new collection called “L7doors from Lualdi” from Italy-based designer Piero Lissoni in India.

The collection features a contemporary clean and sober design with the lightness of aluminium and the transparency of glass.

Available in sliding and hinged versions, the collection enhances the architectural quality of the space. The sliding version of L7 creates a perfect solution for both domestic and work spaces.

The system comprises aluminium frame with thickness of 41 mm, and tempered glass with thickness of 6 mm. The system comes with fix and sliding panels. The hinged L7 version is available in two models, both in glass and metal. With its steel profile and white back-painted glass, the sleek design of L7 in the hinged version exudes lightness on the surrounding space. It has built-in casing and white-painted 65mm jamb. The surface is of double-frosted glass with steel handle.

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Bhoruka Extrusions Pvt Ltd. #1, KRS Road, Metagalli, Mysore - 570016. Karnataka, INDIA. Tel: +91-821-4286100

enquiries@bhorukaextrusions.com—www.bhorukaextrusions.com

DSP WINS ACCOLADES FOR BENGALURU CONVENTION CENTRE DESIGN DSP Design Associates is one of the design partners to The Ministry of Social Welfare and Justice, Govt. of Karnataka for an upcoming convention centre at Bengaluru.

One among DSP Design Associates concepts (The Möbitorium) was merited with “The Most Well Designed Convention Facility Award” at the 10th Annual Estate Awards, 2018 held on January 27 at Delhi, India. The Möbitorium is an inspiration from the seamlessness of a Möbius strip translated into an architecturally planned auditorium. “It’s a culmination of

interesting interlinked volumes to naturally create self-shading surfaces. The proposal is made with a vision that this building becomes an icon which goes beyond function and becomes a

sculptural element contributing to the richness, adding a vibrant streak to the built environment of the city of Bengaluru,” said Yatin Patel, Director, DSP Design Associates.

PLANET 3 STUDIOS SETS TO REVAMP MUMBAI CRUISE TERMINAL Mumbai-based architectural firm Planet 3 Studios Architecture Pvt Ltd has been appointed to revamp and design the new international cruise terminal project at the Ballard Pier, Mumbai. Initiated by the Mumbai Port Trust, the design of the project features an allocation of well-defined space for cargo, cruise and public space.

The public space will spread across an area of around 2 lakh sqft, 25,000 sqft for passenger amenities and 5 lakh sqft for the cruise terminal. Designed with an aim to raise the bar of the port as per internationally acclaimed transportation hubs, the public space will comprise retail stores, business centres, restaurants, multiplexes, convention centres, etc.

The project was conceived with an inspiration from its surrounding, which is reflected in the undulating form of the structure - the rise and fall of the waves. Concerning the project, the firm stated that it

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is a test case for revamp of other cruise terminals in India. Based on this model, similar initiatives will be undertaken for other facilities in various parts of the country.

The façade of the structure will have its distinctive character with the incorporation of the façade enhancing lighting design.

The carefully curated materials suggested in the project include reinforced concrete, glass, tensile fabric and double-glazed glass.

The project is scheduled to be completed by March 2019.

Shipping Minister Nitin Gadkari and Maharashtra Chief Minister Devendra Fadnavis laid the foundation stone of an international cruise terminal at the Mumbai port on January 11. Slated to cost Rs 300 crore, the proposed terminal will have facilities like arrival and departure lounges and cater to around 700,000 tourists annually. It is expected to be ready

by December 2019.

EV&BATTERY TECH INDIA SUMMIT

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ADVERTORIAL

G.B. ENTERPRISES: A LEADER IN UPVC DOOR WINDOWS STEEL REINFORCEMENTS having some exceptions too. Roll forming is a flexible process where both the fundamental rules and the exceptions can be utilized.

Several times, even seemingly impossible roll forming tasks can be accomplished, although it may take a longer time and more money.

Product Line: The main office of the company, G.B. Enterprises Pvt. Ltd.

The company, G.B. Enterprises Pvt. Ltd, is renowned for its quality products and business ethics in uPVC industry as well as other related industries. It was started in the year 2003 with a capacity of 10 to 20 MT. Today we can produce over 1000 MT with a capacity of 2000MT. We have 22 machine lines in our plant, extending over 1 Lakh Sq ft, with five overhead cranes having 5 MT to 25 MT capacities.

The company is headed by three directors - Mr. Pradeep Jain, Mr. Nikhil Gupta and Mr. Rahul Jain.

 Provide a range of products that can assist our esteemed customers increase their profitability.  Convert the client’s requirement into defined end products.  Timely delivery of products to the desired designation.  Maintain a balance between demand and supply chain and other business aspects.

Previously the factory was situated in Bahadurgarh, but after analysing better scope in future, owners decided to expand their business and thus more machinery and resources were introduced with a lot more bigger space in Sampla (Rohtak), Haryana.

Our scope of work ranges from manufacturing of cold roll formed metal sections, punching sections as per requirements, fabrication of steel structures, trading of aluminium sections and items.

Our objective is to satisfy our prestigious customers by catering them with world class products.

We are committed to:

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 uPVC Door Window Steel Reinforcement  uPVC Aluminium Track  Solar Panel Steel Structure  Prefab Structures  Purlins and Channels  Cement Board Prefab House Sections  Roof Sheet and Deck Sheet  Cable Tray and Raceway  Green House Sections

Area of Control:  PAN India  Middle East Countries  South East Asian Countries

PRODUCT & ITS APPLICATION

Roll Forming: To form sheet metal strip along straight, longitudinal, parallel bend lines with multiple pairs of contoured rolls without changing the thickness of the material at room temperature

G.B. Enterprises Pvt. Ltd. 05 km Stone, Sampla-Beri Road, Ismaila 11b – 124517, Sampla, Rohtak, Haryana; Phone: 7056705012; Website: www.gbroll.com; E-mail: gbent.dir@gbroll.com

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