SA Roofing October 2013 | Issue: 54

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OCTOBER 2013 ISSUE: 54

Picture your roof in eco-friendly Metrotile!

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OCTOBER 2013

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ISSUE: 54

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EDITOR’S COMMENTS....................................................................................................... 2

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COVER STORY...................................................................................................................4-6 SAISC STEEL AWARDS.................................................................................................. 8-40

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PAINTS & COATINGS....................................................................................................... 56 EDITOR: Jennifer Rees editor@trademax.co.za

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0861 727 663 EDITORIAL INTERN: Tanya Paulse tanya@trademax.co.za 0861 727 663 ADVERTISING: Jacqui Marsh jacqui@trademax.co.za 0861 727 663 Bradley Williams bradley@trademax.co.za 0861 727 663 LAYOUT & DESIGN: Craig Patterson craig@trademax.co.za SUBSCRIPTIONS & DATA: Luke Perrin luke@trademax.co.za

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DISCLAIMER The views expressed herein are not necessarily those of Trademax Publications. Although we have done our best to ensure the accuracy of our content, neither Trademax Publications nor SA Roofing magazine will be held liable for any views expressed or information disseminated in this issue.

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EDITOR’S COMMENTS

Steel: Always a winner Welcome to the October issue of SA Roofing.

T

he timing of this issue coincides with the prestigious and much-anticipated Southern African Institute of Steel Construction’s (SAISC) 32nd Steel Awards, and so we bring to our readers a smorgasbord of projects and products relating directly to steel. In short, in this issue, we celebrate steel.

We at SA Roofing, too, are amazed by the quality of these projects, wish to congratulate all involved, and are delighted to share them with our readers. And, as always, a call out is in order to thank all other key industry suppliers and stakeholders.

Enjoy the read!

The winning projects of the SAISC Steel Awards featured here represent the great minds, finely honed skills, and top class workmanship that are shining assets to our industry, as well as our economy at large. These projects also celebrate the vast potential of steel in application and showcase structures that are poised to become icons of the architectural landscape of South Africa.

Jen We love hearing from you. Please send your feedback or suggestions to editor@trademax.co.za.

However, afore a backdrop of a particularly challenging time in the steel industry in South Africa, these winning projects also stand testimony to something more than great design, planning, and execution; they tell a story of people, of an industry, that succeed and excel in spite of.

In the introduction to the Steel Awards on page 8, Spencer Erling of the SAISC comments that the entries into this year’s Steel Awards saw a decline in numbers from previous years, but that the numbers were still substantial, given the current state of the industry. He says, “However, the quality of entries this year makes up for the lack of quantity. I am consistently amazed how the standard of entries seems to improve each year.”

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COV E R STO RY

Style backed by mettle Innovation from Metrotile Metrotile SA is driven to bring a range of unique and eco-friendly roofing products to the South African market.With great success all over Europe and in many African countries, Metrotile (Europe) has put their weight behind Metrotile SA to boost their international success.

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he innovative European manufacturer provides affordable, lightweight stone-coated roof systems in highly protective AZ185/Z300 corrosion-resistant steel, also ideal for coastal applications. This premium steel roofing system goes beyond the performance of traditional roofing materials, while convincingly maintaining the look of the traditional roof tile.

This premium roof system is ideal for use on new projects and re-roofs, specifically for thatch and old ‘zinc’ roofs, creating an effective weather barrier, removing the high maintenance requirements and shielding the property from fire and hail.

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This can also save owners of thatched properties around 30% on their insurance premiums. Because they are far lighter than traditional roofing, they don’t require the same heavy (and expensive) roof structure and being recyclable they are in tune with current sustainability trends.

Metrotile is conscious of the environment and with an average lifespan of more than 30 years this sustainable roofing system requires little maintenance and is 100% recyclable. The carbon footprint of a Metrotile roof is also smaller because the profiles weigh on average only 6kg/m², and much less transportationrelated costs and energy are required per square metre than is the case for traditional roofing.

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Further contributing to a green future, Metrotile leads the way in energy-saving roofing with its Metrotile Lightpower photovoltaic solar tile and proprietary ventilation systems.

‘Lightpower’ generates 60Wp per tile and because it is integrated into the roof tile, it is more secure than retrofitted solar panels and does not spoil the aesthetics of the roof.

The energy efficient ventilation systems add to the heat reflective steel substrate for a cooler roof, in line with the regulatory move towards more energy efficient buildings in South Africa.

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The PV system is ideal for new roofs and retrofits and integrates with a number of the popular Metrotile profiles, like the Metrotile Woodshake/Thatch, Metrotile Bond and Metrotile Roman.

Building on their success all over Europe and in many other African countries, Metrotile is now raising the bar for metal roofing in Southern Africa. Since their debut in the South Africa just over a year ago, Metrotile (SA) has expanded their range of unique and ecologically conscious roofing products whilst focusing on superior customer service and sustainability.

Metrotile Woodshake

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INNOVATIONS FROM METROTILE Just recently Metrotile SA has brought to market two beautiful new styles that are all underlined by the same quality and promise of any Metrotile product.

The Metrotile Romana profile brings the Mediterranean style back to life with the assurance of 21st century materials and technology. With its distinctive shape, this profile is unique among stone-coated steel tiles and because of the downturned front and the upturned rear edges, the panels boast a strong overlapping and interlocking tile covering, offering excellent durability, protection and resistance to wind lift or other extreme weather conditions. A five-tile stone coated panel pressed from a high grade of Aluzinc® or equivalent coated steel, Metrotile Romana is available in a wide selection of dual colours to provide an authentic mottled look and enhance any exterior colour scheme.

Another innovative product from Metrotile is the new Metrotile Aquapan, which is aimed, in particular, at the DIY market. Metrotile Aquapan allows the installer to lay no fewer than 35 roof tiles at a time without having to clip or cut any of the profiles.

Metrotile Bond & Lightpower*

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The sheets are profiled five tiles in width and seven in height and have a home on any rooftop. Sheets can be overlapped easily both height-wise and width-wise and with quick and simple preparation and installation and minimal or zero wastage, offer a handy roofing solution to the environmentally conscious home-owner and installer.

Metrotile profiles are designed and manufactured to the highest possible standards. They are resistant to extreme weather conditions and because they are far lighter than traditional roofing, they don’t require the same heavy (and costly) roof structure. In keeping with the current sustainability trends, these tiles are ideal for use on new projects and re-roofs, specifically for thatch and old ‘zinc’ roofs.

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T: 082 451 8711 F: 086 648 3231 E: info@metrotile.co.za

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COV E R STO RY In their quest for the constant improvement of the ‘Metrotile experience,’ Metrotile SA is actively recruiting and training teams of competent installers to ensure that their roof installations match the quality and reputation of their premium product. And to underpin their commitment to proper installations, they also offer a free maintenance plan for all new Metrotile roofs, installed by their approved contractors.

These initiatives are some of the reasons why the Metrotile name is equal to peace of mind and fast becoming the preferred supplier of eco-friendly roofing systems worldwide.

Metrotile Roman Tuscan style.

Metrotile Romana was proudly used on the Pecanwood College project in Hartebeespoort. Look out for a feature on this product in application in a future issue of SA Roofing.

FOR MORE INFORMATION, CONTACT: Stephan Schoombie (c) 082 451 8711 (e) info@metrotile.co.za

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SA I S C STE E L AWA R D S

Steel Awards 2013 Yet another successful year for the Steel Construction Industry

F

ifty entries of projects completed in 2012 were received this year and Spencer Erling, SAISC Education Director and convener of the Steel Awards judges, said that although the number of entries this year was less than those in the bumper years of 2009 and 2010, it was still a significant number considering the industry has experienced a significant slowdown since then. “However, the quality of entries this year makes up for the lack of quantity. I am constantly amazed how the standard of entries seems to improve each year. Considering the history of high-level work that has been entered into Steel Awards over the years, it is most encouraging that the bar is raised on such a consistent basis,” Erling says.

This year was the 32nd Steel Awards, which recognises excellence in the use of structural steel in various construction projects. Steel Awards is hosted by the Southern African Institute of Steel Construction (SAISC).

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MEDUPI WINS OVERALL AND MINING AND INDUSTRIAL CATEGORY AWARDS The main frame and boiler grid support project at Medupi Power Station is the Mining and Industrial category winner as well as overall winner for Steel Awards 2013.

The judges said: “The boiler support structures really exhibit excellence in the use of structural steel. It is a classic heavy engineering project of spectacular proportions. It is heavy engineering at its best. The structures look so clean and simple, especially before all the rest of the steelwork, platforms, boiler casings and piping bundles and other equipment enclose them. And don’t be fooled – these fourlegged braced monsters soar 105 metres into the sky!”

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SA I S C STE E L AWA R D S The main sponsor of Steel Awards 2013, which was held simultaneously in Johannesburg, Cape Town and Durban on 19th September, was Aveng Steel (Aveng’s steel cluster consisting of Aveng Trident Steel, Aveng Steel Fabrication, formerly DSE, and Aveng Steeledale). Other sponsors were: Macsteel (Table Décor); Cadex SA (Photo Competition); The Association of Steel Tube and Pipe Manufacturers of South Africa (Tubular Award); Stewarts & Lloyds (Light Steel Frame Award) and partner sponsors: ArcelorMittal SA; B&T Steel; Eazi Sales & Service; Genrec Engineering; NJR Steel; Peddinghaus; Tubular Holdings; Vital Engineering.

The fabrication of the Medupi structure is worthy of special mention. The major boxed column and beam components are fabricated to the extremely exacting dimensional tolerance requirements – 2 millimetres on those massive chunky pieces of steel. The boxed columns have extensive diaphragm and stiffening requirements making it difficult to meet the ‘squareness’ requirements, especially taking the distortion resulting from the welds into account.

The boiler support grid at the 105 metre level is critical to the success of the boiler house structures. It consists of 110 structural elements. A structural failure at this level could result in the release of super-heated steam which could be disastrous in terms of loss of life to people in the vicinity.

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SA I S C STE E L AWA R D S “The enormously high standard of engineering at every level in the process – structural design, connection design, detailing of the structures, fabrication and erection and the comprehensive checking to ensure that the demanding requirements are fully met – are therefore completely justifiable,” the judges said.

Louis Breckenridge, a judge representing the Constructional Engineering Association, said that it is difficult to grasp how impressive they are until you get close to these gigantic objects. “These structures demonstrate clearly the capability of South African fabricators to supply and erect very sophisticated, heavy structures on a par with any country in the world. The quality of the workmanship, particularly the welding and fit up, is exceptional. This project is a deserving winner of the overall prize at Steel Awards 2013,” he concluded.

PROJECT TEAM OVERALL WINNER DEVELOPER/OWNER: Eskom ARCHITECT: Eskom STRUCTURAL ENGINEER: Hitachi Power Europe QUANTITY SURVEYOR: Genrec Engineering PROJECT MANAGER: Hitachi Power Africa MAIN CONTRACTOR: Hitachi Power Africa STEELWORK CONTRACTOR: Genrec Engineering DETAILERS/DETAILING COMPANY: Genrec Engineering SITE ERECTION: Murray & Roberts

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SA I S C STE E L AWA R D S ROOI ELS BEACH HOUSE WINS RESIDENTIAL CATEGORY Upbeat Properties 167’s spectacular Rooi Els beach house won the Residential category at Steel Awards 2013. The judges noted that while the judging criterion for this category is excellence in the use of structural steel, this house displayed excellence in almost everything. They said they were intrigued right from the start when, on an early judging trip a few years ago, seeing the skeleton of the structure rise from the rocks and then viewing the photographs of the finished article that accompanied the entry. “It stood out as a winner in all the criteria, it also showed what steel can do when faced with its ‘arch enemy’ – corrosion!” they said.

Steel was the material of choice, but how do you protect it against this extreme corrosive environment? With a back-toback corrosion protection guarantee for the client in mind, a team was brought together around the design table. Terry Smith from the Hot Dip Galvanizers Association of Southern Africa, together with the galvanizer, paint supplier and the fabricator presented a 15-year guarantee for the duplex system as installed.

One of the judges, Heather Dodd, representing the South African Institute of Architects, said, “This steel-framed house sits floating above the Rooi Els promontory. It is designed as a long thin glass box with a timber deck wrapping around its exterior. Internally the box is divided by bathroom pods and sliding doors which separate the living spaces from the bedroom areas.”

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SA I S C STE E L AWA R D S The structural design was challenging in the large clear span leaps and cantilevered overhangs demanded by the architecture.

Careful attention was paid to the deflection criteria over and around glazed sliding-folding perimeter walls, under particularly onerous wind loading conditions.

The floor structure is a composite of a reinforced concrete flat slab, framed by a steel channel, and supported on a regular grillage of steel columns, which extend uninterrupted up to the ceiling plane where they are framed by a ‘Toblerone Vierendeel’ truss that rings the house and ultimately forms a glazed clerestory.

“This is a project that just exudes excellence, something we have come to expect from the work of the professional team involved,” concluded Dodd.

PROJECT TEAM RESIDENTIAL WINNER DEVELOPER/OWNER: Upbeat Properties 167 ARCHITECT: Elphick Proome Architects Inc. STRUCTURAL ENGINEER: Linda Ness Associates PROJECT MANAGER: Elphick Proome Architects Inc. MAIN CONTRACTOR: Brandbild STEELWORK CONTRACTOR: Apocalypse Mechanical Monsters DETAILERS/DETAILING COMPANY: Apocalypse Mechanical Monsters CORROSION PROTECTION: Cape Galvanising Consolidated CORROSION PROTECTION CONSULTANTS: Hot Dip Galvanizers Association of Southern Africa INTERIOR DESIGNERS: Elphick Proome Interiors (EPi)

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SA I S C STE E L AWA R D S NTT AUDI NEW SHOWROOM WINS LIGHT STEEL FRAME BUILDING CATEGORY Audi’s new showroom in East London has won the Stewart and Lloyds Light Steel Frame Building (LSFB) category. One of the judges, Peter Curr, representing the Association for Steel Tube and Pipe Manufacturers of South Africa, said that over the past few years the entries for the LSFB category have been predominantly for residential structures. “This however was a top-end motor showroom, which was certainly a departure from the norm and certainly required closer inspection. It came through with flying colours demonstrating the unique attributes of LSFB. In this case instead of straight and square lines, we were treated to dramatic curves that illustrated the versatility of the product,” he said.

As expected, the interior of an upmarket car showroom must be unique and classy to, after all, show off one of the most respected German-made car brands. The client wanted curved walls and bulk heads to get the right effect and usually this would have been done in concrete. But, as with most retail and commercial projects time is money and the LSFB method was the perfect solution given this scenario.

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SA I S C STE E L AWA R D S

SA I S C STE E L AWA R D S Due to the very tight project programme, as well as the size and height of the curved walls, the LSFB method was the perfect system to use in place of standard dry-walling. Furthermore, the use of preassembled structural beams and joists allowed for very quick on-site erection of curved walls with the added advantage of consistent sizes and accuracy.

The judges said that in every aspect of this technically challenging project, LSFB performed as we have come to expect from this versatile building method.

“This is a deserving winner of the Stewarts and Lloyds light steel framing category award,” they concluded.

PROJECT TEAM LSFB WINNER DEVELOPER/OWNER: Audi VW East London ARCHITECT: Alchemy Architects STRUCTURAL ENGINEER: Endecon Ubuntu QUANTITY SURVEYOR: Cater & Associates PROJECT MANAGER: Dewing Construction MAIN CONTRACTOR: Dewing Construction STEELWORK CONTRACTOR LSFB: Shospec LSFB MANUFACTURER: Steel Frame Developments DETAILERS/DETAILING COMPANY: Shospec

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SA I S C STE E L AWA R D S

STANDARD BANK WINS TUBULAR CATEGORY The Standard Bank Rosebank building, known as 30 Baker Street, located on the corner of Baker and Oxford Roads in Rosebank, Johannesburg has won the Tubular Category. One of the judges, Franco Mordini, representing the Association of Steel Tube and Pipe Manufacturers of South Africa, the category sponsor, said this project used tubes in an aesthetically pleasing and effective manner, both from an architectural and engineering point of view while the quality of fabrication also impressed.

The architectural vision was for an ‘institutional building’ with a transparent exterior that reflected Standard Bank’s desire for transparency with its client base. To this end steel and glass played an instrumental role in ensuring that this was achieved. Although open web sections were used in the construction of the roof elements that form a modern take on a traditional ‘saw tooth roof form,’ tubular steelwork in the form of principally square hollow section tubular members were used extensively in the construction of the façades and atria.

For the façade the structural engineers wanted to incorporate very large panes of glass in the end walls of the atria so that the external envelope gridding was large in proportion, thereby reflecting the large space that was the atrium itself. Because of steel’s superior stiffness and strength over aluminium, it was possible to use nearly a full standard stock sheet of glass in the gridding of the façades. This gridding is also successfully applied in the eastern and western atria.

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The judges said that tubular frame that supports the glass façade was well designed and constructed.

The north-south atrium is brilliantly transparent when viewed from a distance, as well as from within and achieves the effect the architect was seeking. The strength and stiffness of tubular steelwork was instrumental in achieving this.

The building has achieved a Five Star Design rating with the Green Building Council and intends on achieving a similar rating for its ‘as built’ operation. The building generates its own power with a tri-generation plant and has many innovative features.

The judges complimented the project team and said that the building was a worthy winner of the Tubular category.

PROJECT TEAM TUBULAR WINNER DEVELOPER/OWNER: Standard Bank ARCHITECT: GLH Architects STRUCTURAL ENGINEER: Pure Consulting QUANTITY SURVEYOR: Norval Wentzel Steinberg PROJECT MANAGER: Standard Bank Real Estate MAIN CONTRACTOR: Wilson Bayly Holmes – Ovcon (WBHO) STEELWORK CONTRACTOR: Tass Engineering STEELWORK SUBCONTRACTOR (PART OF THE CENTRAL ATRIUM ROOF TRUSSES): Omni Struct Nkosi DETAILERS/DETAILING COMPANY: Precise Structural Modelling ERECTOR: On Par Steel

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SA I S C STE E L AWA R D S NEW ALEXANDER FORBES HEAD OFFICE WINS ARCHITECTURAL CATEGORY The new Alexander Forbes head office has won the Architectural category at Steel Awards 2013. The judges said that the building confirms a new maturity in the South African built environment. “We can do whatever is done elsewhere in the world and we can do it better. This shows that we have a unique South African style and that we do not need to copy overseas designs,� they said.

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It was important to Alexander Forbes that the design of the new building reflected the values of the company. These include transparency, which is reflected in the huge volumes of natural light and glazed layering, and trust, which is portrayed throughout the design elements of the building, revealing not only the mores of the company, but also enriches the lives of its employees.

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SA I S C STE E L AWA R D S Since the health and well-being of staff is one of the central design mandates, it combines plant-filled outdoor areas, natural light, and energy efficient lighting. The circulation of fresh air and temperature control were also key considerations. As such, numerous pause or break areas are incorporated into the design.

It was therefore natural that environmental sustainability was crucial to the design of the building, which has been accredited by the Green Building Council of SA as a four-star Green Star building. “Not only is the building an aesthetic masterpiece, it is also groundbreaking in its approach to energy, water, waste and material usage,” the judges said.

Architecturally, the building features a continuous design of fluid curves.

Sections of the façade incorporate s-shaped scallop walls, while wavy, flowing lines and patterns are further integrated throughout the interior of the building. Everything radiates out from the centre of the building – clearly shown by the shape of the bridge links. Bathroom facilities are concentrated around the central core of the building and occupants are never more than a 20m walk from these facilities.

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SA I S C STE E L AWA R D S Steel was used extensively in every form throughout the project, especially in the following aesthetic elements: the bridges and roof lights, the spiral staircase and the cladding.

“From a structural steel design perspective the Alexander Forbes building exhibits excellence in a very sensible way, supporting architectural designs that demand more than the norm. This is a most worthy winner of the Architectural category,” concluded the judges.

PROJECT TEAM TUBULAR WINNER DEVELOPER/OWNER: Zenprop Property Holdings ARCHITECT: Paragon Architects STRUCTURAL ENGINEER: Sotiralis Consulting Engineers QUANTITY SURVEYOR: Schoombie Hartmann PROJECT MANAGER: Capex Projects MAIN CONTRACTOR: WBHO/Tiber JV STEELWORK CONTRACTORS: Nancy Engineering, Spiral Engineering

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4mm Alububble® 2906, D10- White bubble with foil backing

4mm Alububble® 1983 D10 both sides reflective foil

Details

Results

Conforms to SANS 1381 part 4 (Full report available on request) Form

Roll

Product thickness

4mm

Length

>4000mm

Width

1250 mm

Mass per unit area Finished Roll Weight

270g/m² 13.5kg

Emissivity

<0.05

}

Water Vapour Permeance

<0.002 g/(s.MN)

Effective Coverage (100mm overlap)

46m²

Roll Diameter

460mm

Thermal Resistance “R” (m²K)/W

1.103

Details

Results

50m²

Conforms to SANS 1381 part 4 (Full report available on request) Form

Roll

Product thickness

4mm

Length

>4000mm

Width

1250 mm

Mass per unit area Finished Roll Weight

346g/m² 17.5kg

Emissivity

<0.05

Water Vapour Permeance

<0.002 g/(s.MN)

Effective Coverage (100mm overlap)

46m²

Roll Diameter

460mm

Thermal Resistance “R” (m²K)/W

1.454

}

50m²

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Alutherm® Polyester (AP) blanket. Faced on one side with aluminium foil and on the other side with a bubble facing.

Details

Alutherm 50mm Alutherm 100mm

Tested in accordance with and conforms to 1381 part 1: 2007 Material Classification

TYPE 3 - Mats or Bats with reflective membrane laminated to material

Length (Std)

10m Roll

10m Roll

Width (Std)

1100mm

1100mm

Roll Diameter

600mm

760mm

Density

12Kg/m³

12Kg/m³

Finished Roll weight

11kg

17kg

NRC – Noise Reduction Coefficient

0.60

0.70

Resistance ‘R’ (m²K)/W

1.25

2.65

Conductivity ‘K’ W/m.K

0.040

0.040

Thermal Property Values

Alutherm® Fibre Glass (AF) blanket. Faced on one side with aluminium foil and on the other side with a bubble facing.

Details

Alutherm 50mm

Alutherm 75mm

Alutherm 100mm

Alutherm 135mm

Tested in accordance with and conforms to 1381 part 1: 2007 Material Classification

TYPE 3- Mats or Bats with reflective membrane laminated to material

Length (Std)

10m Roll

10m Roll

10m Roll

10m Roll

Width (Std)

1100mm

1100mm

1100mm

1100mm

Roll Diameter

600mm

720mm

760mm

800mm

Density

12Kg/m³

12 Kg/m³

12 Kg/m³

12Kg/m³

Finished Roll weight

11kg

14kg

18kg

23kg

0.80

0.85

0.92

NRC – Noise Reduction Coefficient 0.75 Thermal Property Values Resistance ‘R’ (m²K)/W 1.25

1.88

2.67

3.38

Conductivity ‘K’ W/m.K

0.040

0.037

0.040

0.040

SA I S C STE E L AWA R D S KING EDWARD VII SCHOOL NEW LIBRARY AND MUSEUM - JOINT WINNER IN REFURBISHMENT AND EXTENSIONS CATEGORY The new library and museum project at King Edward School (KES) in Houghton, Johannesburg, has been made the joint winner of the Refurbishment and Extensions Category at Steel Awards 2013. Heather Dodd, representing the South African Institute of Architects, and one of the judges, said that this project is a “beautiful example of a careful rework of an historic building giving it a new programme and lease on life.” She added that “the architect’s enthusiasm for the project was also noted in seeking innovative ways of engaging with the technology in using simple means to achieve a beautifully crafted finish.”

The original gymnasium as it stood offered no real connection to the school. The high windows provided no view of the gardens, and there was no link to the fields, as the rear wall was closed off to the basketball courts beyond. The idea was therefore to create a spine through the building, thus physically and visually linking the street entry to the sports fields beyond. The library was to be housed in the gymnasium hall and the museum and ablution facilities in the old storage and change-room area.

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SA I S C STE E L AWA R D S Internally the gymnasium, with its large, visually inaccessible, windows, Canadian maple floors and dark trussed ceiling was the perfect opportunity for a boys’ library. However, the sprung floors could not support book loads, and the space was inadequate for both library and computing facilities.

The charm of the Edwardian shell and the need to unite both old world and modern allowed for the introduction of modern materials, such as steel and glass. The concept that followed was:

LIBRARY • Introduction of a steel mezzanine structure from which book shelves could hang.

• The mezzanine structure to also provide an upper floor area for computer stations.

• The mezzanine and shelving would provide lower, intimate reading nooks.

• The mezzanine would also link both upper and lower areas both physically and visually.

• Lower glazed offices for staff and discussion areas were to be included.

• Glazed balustrades were to be introduced to allow for visual calm.

• The Canadian maple flooring was to be reused.

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SA I S C STE E L AWA R D S MUSEUM • The museum was to be located in the previous change room area. This provided a threshold to the memorial gardens, giving passers by a ‘visual tease’ of the museum when entering the school itself.

• A steel mezzanine structure was to be introduced to form a glass showcase museum box.

• The upper mezzanine was designed to form a reading area with views over the memorial garden.

• The mezzanine bridge was to create a link to the museum space above the old store.

• A glazed shell was to provide contrast to museum memorabilia in the style of ‘warm juxtaposition.’

• The glazed showcase was to allow for printing of school history and photographs.

The judges said the King Edward VII School Library and Museum’s great concept and beautiful execution could not be overlooked. It is a very worthy joint winner of the Refurbishment and Extensions category.

PROJECT TEAM KES JOINT WINNER REFURBISHMENT AND EXTENSIONS CATEGORY DEVELOPER/OWNER: King Edward VII School ARCHITECT: Joy Campkin-Smith STRUCTURAL ENGINEER: Attie Bresler QUANTITY SURVEYOR: Stuart Ray Skead and Associates MAIN CONTRACTOR: Akhane Construction STEELWORK CONTRACTORS: QM Steel, King Square Steel & Balustrades DETAILERS/DETAILING COMPANY: QM Steel

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thermoset, does not melt, drip or spread flame

environmentally friendly & recyclable

high compressive strength

moisture and wind resistant

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the right choice for intelligent organs

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CAPE TOWN: Tel: +27 (0)21 981 8814 • Fax: +27 (0)21 981 6322 • E-mail: carol@rigifoam.com • Units B18/19 Kruis Road, Brackenrite Business Park, Brackenfell.

PORT ELIZABETH: Tel: +27 (0)41 453 0277 • Fax: 086 532 5702 • E-mail: ronnie@rigifoam.com • 4 Bedford Road, Neave Industrial.

KWA-ZULU NATAL: Tel: +27 (0)31 700 5250 • Fax: +27 (0)31 700 4924 • E-mail: tristan@rigifoam.com • Unit G Pine Mead Industrial Park, 47 Gillitts Road, Westmead.

JOHANNESBURG: Tel: +27 (0)11 421 0313 • Fax: +27 (0)11 421 0410 • E-mail: duncan@rigifoam.com • 3 Detroit Street, Apex, Benoni.

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I N D U S T R I A L

SA I S C STE E L AWA R D S PAARMAN FACTORY JOINT WINNER IN REFURBISHMENT AND EXTENSIONS CATEGORY The extension and refurbishment to the new Paarman Foods factory in Diep River, Cape Town, has been named joint winner of the Refurbishment and Extensions Category.

The owner chose to do an extension where the building costs would be relatively high, but the overall cost would be cheaper than a new building and machinery. The judges commented that this “has to rank as one of the most difficult extensions/ refurbishment projects that they have ever seen.”

IN ORDER TO FULFIL THE BRIEF SUCCESSFULLY, A SET OF RULES FOR THE EXTENSION WAS DEVELOPED: • It was to be done in two phases, one in 2011 and the other in 2012.

• As much of the work as possible was to be done during nights and weekends.

• The existing plant was to be kept running at all times except during two planned two-week shut downs over the Easter periods in 2011 and 2012.

• The extra office floors and walkways required would have to hang off the new roof structure to minimise disruption of the production lines and allow erection outside the existing envelope.

• The new mezzanine floor was to be built over existing operating plant, which required strategically placed protection scaffolding so that the plant could operate during the day.

• Any extension over the existing roof and wall structures was to be built, cladded and sealed before attempting to take down the existing asbestos cement cladding.

• All rainwater would be carried to downpipes outside of the cladding.

• All plant areas below existing cladding would be sealed off.

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SA I S C STE E L AWA R D S The judges noted that while this all seems relatively simple, there are always complications when tying new steelwork into existing structures and, in this respect, this project was exceptionally difficult. “The engineer had the immensely difficult job of positioning and threading the new columns into the existing structure to clear both existing processing and structural elements,” they said.

The challenges were numerous and exacting. These included where to put new columns relative to the existing structure and plant equipment, determining the exact dimensions and how to measure them in and around all the structures and plant, making sure everything clears vertically, splicing the girders such that, where required, they could be galvanized and erected, making openings in lattice girders for doorways and passages by use of Vierendeel openings, and more.

The judges said that anyone involved in steel construction will know that for steel construction to be successful, the name of the game is ‘attention to detail.’

“If ever that old adage applied to a structure, it was this one. The end result was that the Paarman Food factory exudes excellence in the use of steel,” they concluded.

PROJECT TEAM PAARMAN JOINT WINNER REFURBISHMENT AND EXTENSIONS CATEGORY DEVELOPER/OWNER: Paarman Foods PRINCIPAL AGENT: Conspec Consulting Engineers STRUCTURAL ENGINEER: Conspec Consulting Engineers QUANTITY SURVEYOR: Conspec Consulting Engineers PROJECT MANAGER: Conspec Consulting Engineers ARCHITECT: Oliver Dods STEELWORK CONTRACTORS: Anchor Steel Projects, Union Structural Engineering Works CORROSION PROTECTION: Cape Galvanising Consolidated, Advanced Galvanizing Corporation CLADDING: Roof and Clad, Cladcon

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SA I S C STE E L AWA R D S THE FOLLOWING PROJECTS WON COMMENDATIONS IN THEIR RESPECTIVE CATEGORIES: ENGINEERING STUDY CENTRE AT UNIVERSITY OF PRETORIA IN ARCHITECTURAL CATEGORY The new Engineering Study Centre at the University of Pretoria has won a commendation in the Architectural category at Steel Awards 2013. One of the judges, Johann Nell, representing the South African Iron and Steel Institute, said that this project is an example of where old meets new, where good engineering meets good architecture, complimenting each other in addressing the aesthetics with the steel arch design of the entrance to the study centre. “I am proud to be associated with such an esteemed entity,” he said.

Steel also played a crucial role in achieving the required aesthetic shape and appeal of the final building façade as much of the structural steelwork would be visible to the public after completion of the project. With steel it was possible to roll large sections to create the visually appealing dome-type roof.

Environmental considerations also contributed to the use of steel as the the study centre is built in the middle of the UP’s botanical garden with numerous endangered plant species growing virtually against the building’s footprint. Steel erection was the least intrusive construction method, because the steel sections were fabricated off-site, minimising the amount of construction activities on site.

One of the main reasons for selecting steel as the structural medium was to reduce the additional load that would be added to the existing structure. Modifying the existing building foundations to accommodate the new structure was not an option. To limit the amount of additional weight, the team used the principal of compression. This ensured that a large portion of the roof’s own weight would be transferred to the outer, and independent, pile foundations. The steel roof has spans of up to 40m and covers a total area of 1 700m². Similarly, steel was used as the primary structural element supporting the mezzanine floors.

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SA I S C STE E L AWA R D S Due to restricted work space and weight limitation on the existing reinforced concrete slab, large mobile cranes could not be used during construction. The contractor had to revert to manual labour or a combination of manual labour and smaller lifting machinery to erect the structure.

The steel fabrication and erection was finished on time and within budget.

The client commended the team for not only creating a space where engineering students could thrive and work optimally day-to-day, but also on transforming the landscape of the Hatfield campus of the University of Pretoria.

The judges unanimously agreed that this project was most worthy of a Steel Awards commendation. “The creation of space under the old engineering building in answer to accommodate the number of students at the university speaks of architectural and engineering ingenuity,” they concluded.

PROJECT TEAM ARCHITECTURAL COMMENDATION DEVELOPER/OWNER: The University of Pretoria ARCHITECT: ARC Architects STRUCTURAL ENGINEER: Aurecon QUANTITY SURVEYOR: Pentad QS PROJECT MANAGER: ARC Architects MAIN CONTRACTOR: Robenco Construction STEELWORK CONTRACTOR/S: Cicon Projects & Management DETAILERS/DETAILING COMPANY: X-Tech

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SA I S C STE E L AWA R D S GRANTLEIGH TITANIUM IN ARCHITECTURAL CATEGORY An inspirational Science and Maths learning Centre, the Grantleigh TLC ‘Titanium Learning Centre,’ which expresses integrated sciences and technology in its architectural language, has been awarded a commendation in the Architectural category at Steel Awards 2013.

Representing the Constructional Engineering Association, one of the judges, Louis Breckenridge, said that this very impressive learning centre expresses integrated science and technology in its architectural language and detailing, promoting the building as a ‘selfexhibition.’ “It is an example of an excellent architectural concept enhanced by good engineering design and very careful detailing,” he said.

The roof concept of the main auditorium building was morphed from the likes of a rib cage of a bird, deriving characteristic elements of flight, motion and lightness coupled with a fluent curvature-lined steel beam skeletal structure that concludes into the site. The judges said that this striking roof structure changes the whole image of the TLC and the school.

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SA I S C STE E L AWA R D S The main building consists of two science laboratories on the first floor, a 144 raked-seat auditorium, teacher’s office, and a boardroom, which forms a protected courtyard enclosure with subsidiary maths blocks and also ablution blocks. The central courtyard forms the outdoor learning area where dissections and outdoor lectures are conducted. An outdoor amphitheatre is based centrally together with the old maths classroom block, forming a protected learning space. The project team used locally sourced materials and locally based consultants.

“The concept is outstanding, the workmanship excellent and the attention to the details of this complicated structure is palpable,” concluded the judges.

PROJECT TEAM ARCHITECTURAL COMMENDATION DEVELOPER/OWNER: Grantleigh School ARCHITECT: TJ Architects, Richards Bay STRUCTURAL ENGINEER: PD Naidoo and Associates QUANTITY SURVEYOR: Bingelela Quantity Surveyors PROJECT MANAGER: TJ Architects, Richards Bay MAIN CONTRACTOR: Bencon Construction STEELWORK CONTRACTOR/S: Impact Engineering DETAILING COMPANY: Impact Engineering ROOF CONTRACTOR: Create Projects ROOFING SUPPLIER: Global Roofing Solutions

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SA I S C STE E L AWA R D S SAINT HELENA WORKERS VILLAGE - LIGHT STEEL FRAME BUILDING CATEGORY The judges said that this project certainly deserved a commendation as it is “a perfect example of a wellexecuted project that clearly shows the various and many advantages of LSFB.” Saint Helena is a volcanic island in the South Atlantic Ocean. The UK government recently invested £250 million in the construction of the island's airport. Anticipated to be fully operational early 2016, it is expected to help the island towards self-sufficiency and encourage economic development. The airport is also expected to kick start the tourism industry, with up to 30 000 visitors expected annually.

A workers village had to be constructed for 300 workers who are working on the airport project. The village comprises accommodation, ablution facilities, recreational units, laundry, offices, holding cells and a kitchen with a mess hall.

The main challenge was how one goes about building a village on such a remote island with no locally sourced building materials and a sensitive natural environment. This was clearly an ideal project for LSFB. The LSFB contractor’s steel roll-former was built into a 20’ container and deployed on site. All building materials had to be shipped via 20 containers from either Cape Town or Walvis Bay, as no materials are available on the Island at all.

All these containers had to then be unpacked in the local harbour before delivery to the site, as local road conditions only allow 7 tons per load. The overall logistics were often nightmarish as any material needed, down to the smallest screw, took a minimum of 28 to 35 days to arrive.

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SA I S C STE E L AWA R D S

An agreement between the main contractor and local government stipulated the use of mostly local Island labour. This had a significant impact on the duration of the contract, as most of the local labour had not been previously employed in the construction industry and had to be trained in lightweight steel frame technology.

The judges noted that he project required light, transportable building material to a remote site, the use of local labour, environmentally responsible construction, adaptability after its original use and quick erection in bad weather conditions. “Only LSFB could meet all those requirements and this project clearly showed how,” they concluded.

PROJECT TEAM LSFB COMMENDATION DEVELOPER/OWNER: Basil Read ARCHITECT: MVA Architects & Interiors STRUCTURAL ENGINEER: DMS Structures PROJECT MANAGER: SA Steelframe Systems MAIN CONTRACTOR: SA Steelframe Systems STEELWORK CONTRACTOR: SA Steelframe Systems CLADDING, FINISHING, PLUMBING AND ELECTRICAL CONTRACTOR: SA Steelframe Systems DETAILERS/DETAILING COMPANY: SA Steelframe Systems PLUMBING MATERIAL SUPPLIER: Marley

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SA I S C STE E L AWA R D S ILLOVO SUGAR DISTRIBUTION WAREHOUSE - MINING AND INDUSTRIAL CATEGORY According to the judges, the lasting impression of this project is “the size, the obvious and well thought-out structural systems, the cleanliness and tidiness and a warehouse which is light and airy.”

This 42 500m² warehouse in Pietermaritzburg, is fitted with six 20t overhead cranes spanning 32 metres clear to handle bulk sugar storage. In addition there is 1 000m² of high quality office facilities. The warehouse has a clear eaves height of 18m with lattice trusses spanning 35m clear. The supporting lattice girders span 32m clear creating large open areas allowing for narrow aisle and wide aisle racking layouts.

The judges noted that from a structural engineering perspective, walking through the warehouse and looking at the roof structure one cannot but note that this was a team that really understood the way structures behave.

“They used all the tricks available to the good engineer to improve a structure. Some of these included long continuous spans in both directions, raised roofs in parts and interesting lacing system to the latticed crane columns.”

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SA I S C STE E L AWA R D S As in all factory/warehouse buildings, safety is of paramount importance. On many occasions when visiting factories, safe walking passages, often marked with green or yellow paint, are cluttered with product storage, equipment and general untidiness. “In this case, the permanent, safe walking areas pass through the middle of the lower concrete columns, ensuring that they are always open and easy to traverse. This is an excellent idea,” the judges said.

An outstanding feature of this warehouse is the entrance canopy, which is clearly a superb architectural touch. Using the circular hollow sections for columns the effect of representing sugar cane growing in the field is achieved. “A touch of difference and excellence for an industrial project,” the judges said.

In awarding this project a commendation in the mining and industrial category, the judges commented that the project displays “superb knowledge of structural engineering and a great understanding of the client's brief and the processes involved.”

PROJECT TEAM MINING AND INDUSTRIAL COMMENDATION DEVELOPER/OWNER: Collins Property Projects ARCHITECT: TC Design Architects STRUCTURAL ENGINEER: EDS Engineers Design Services QUANTITY SURVEYOR: MHS Consulting PROJECT MANAGER: TC Design Project Management MAIN CONTRACTOR: Armstrong Construction/Industrial Leases STEELWORK CONTRACTORS: Cadcon, A. Leita Steel Construction DETAILERS/DETAILING COMPANY: Monde Cané

“The entire project truly displayed excellence in the use of steelwork,” they concluded.

ABOUT THE SOUTHERN AFRICAN INSTITUTE OF STEEL CONSTRUCTION The SAISC’s raison d’etre is to be the leading facilitator in the development of the steel construction sector in Southern Africa, on a par with its best international counterparts. The SAISC promotes steel as the material of choice in construction amongst clients and decision makers through best practice, innovation, education and training, standards, practice aids and advisory services, and advances the interests of the steel construction industry in the region through advocacy and programmes aimed at excellence. www.saisc.co.za

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ROO F I N G

Protection above all

Sustainable roofing for our planet Onduline®’s core values are simplicity, reliability and commitment. And by commitment, the company means, quite literally, ‘protection above all.’

Onduline Classic®

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ts ongoing mission is to take serious sustainable actions at every level of its business, from its products and processes to its people and its planet. The company is constantly striving to fundamentally improve the way it operates, providing its customers with truly sustainable roofing solutions at a reasonable price, improving people’s lives, as well as the neighbourhoods they live in.

ONDULINE®’S PRODUCTS All of Onduline®’s products and materials are lightweight, which makes for simpler, more efficient transportation, as well as less waste at construction sites. What’s more, they are asbestos-free, made from recycled fibres and use natural pigments for colouration.

ROOFING SOLUTIONS Onduline®’s roofing solutions are the most efficient and costeffective DIY and professional roofing alternative. The company offers three roofing solution ranges, namely Onduline Classic® roof sheets and accessories, the Onduvilla® tiles and accessories and the Bardoline® shingles as the alternative to slate.

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ONDULINE CLASSIC® An attractive, lightweight, but extremely tough, corrugated roofing composite material manufactured from bitumensaturated organic fibres under intense pressure and heat.

The unique production process is a result of 50 years’ worth of continuous effort in research and development and consists of several phases of intense complexity. The result is a flexible and cost-effective product that provides weather protection, acoustic and thermal insulation – even in the most extreme climatic conditions.

Onduline Classic® is guaranteed waterproof for at least seven years – it cannot rust or become brittle and is rot and fungi resistant. It resists most chemicals and corrosion and is very easy to handle and fix.

The product contains no asbestos and therefore represents no health risk either in installation or while the building is in use.

This is why Onduline Classic® is superior to many other corrugate roofing systems and has been installed on millions of roofs around the world.

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ROO F I N G

Onduvilla®

BARDOLINE® The Bardoline® bituminous shingle tile strip is recognised as one of the leading lightweight roofing systems available. For over a quarter of a century, Bardoline® has been continuously developed to set new standards in lightweight roofing, utilising our world wide experience to provide a resilient, cost-effective and long lasting roof covering.

Bardoline® creates an attractive, traditional roof finish, whilst being easy to fix and handle. These qualities allow designers to create exciting and original roofing configurations on a wide range of projects, from housing to commercial developments.

Bardoline® is covered by independent BBA certification, with a 15-year insurance-backed weathering guarantee. Bardoline® is a reliable, economic choice for both trade and DIY projects, such as garden houses, workshops, garages and sheds.

Onduvilla®

ONDULINE®’S PROCESS

ONDUVILLA®

Onduline® is proud to have achieved a positive carbon footprint and a much lower volume of CO2 than other roofing solutions. Additionally, its manufacturing processes boast low energy consumption (just 4 kwh per square metre) and no dangerous waste.

The Onduline® Group is the world leader in production and sales of bitumen sheets used for roofing and under-roofing.

The experience required over 60 years of constant and attentive presence in the international construction materials market and has enabled the Onduline® Group to envision and develop new and innovative products, like Onduvilla®.

Onduvilla® corrugated tiles are small 106cm x 40cm elements and give the roofing a pleasant look that is reminiscent of traditional clay tiles, with the advantage of extreme lightness.

An exclusive shade colouring system makes each one different, resulting in a natural texture.

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Its plants are equipped with high-performance treatment systems for gas effluents and emit no liquid waste in any form.

The after-life of its products is just as important. Through high-tech recycling processes, the company has been able to achieve high content of post-consumer material (around 50 percent). In fact, the company is currently recycling some 200,000 tons of material each year. Every action it implements is carefully considered in terms of environmental responsibility.

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ROO F I N G

Bardoline®

ONDULINE®’S PEOPLE People are the cornerstone of its endeavours and, ultimately, everything it does is to improve their lives. In addition to all the sustainable initiatives behind its products and processes, Onduline® is a company that values its workers. It currently employs more than 1,600 people across the globe, representing dozens of nationalities, cultures and languages. And the average employee stays with the company for seven years on average, well above the global median for private-sector workers.

ONDULINE®’S PROOF In this noisy era of exaggerated green-intensive communication, it is important to be able to back up real initiatives with solid facts and reliable third-party confirmation. Onduline®’s achievements are regularly recognised by leading organisations and labels. For instance, the company has earned the prestigious VAR 1016 certification for high-impact recycling, which provides elements for LEED certification for sustainable green building operations. Not to mention the carbon footprint, which it has conducted with Pur Project, well known experts of this field.

Bardoline®

FOR MORE INFORMATION, CONTACT: Nicolas Herberstein (t) 011 894 7087 (c) 082 979 8294 (e) nicolas@onduline.co.za (w) www.onduline.co.za

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LSFB

General Motors onto light steel frame

General Motors South Africa has added its name to the growing list of companies that support the use of the light steel frame building (LSFB) method.

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The roof, also built with light steel frame trusses, has a free span of 24.5m, which is a significant span, even for heavy structural steel work. The light frame steel was delivered 'flatpacked' and after assembly was erected within seven days.

The Silverline Group, well known for its high profile LSFB projects, including the recent and latest McDonald's restaurants in South Africa, was contracted to do the construction including all the civil work, boundary walls, driveways and paving and all finishes. John Barnard, director of the Southern African Light Steel Frame Association (SASFA) explains that the building is in essence a light steel frame structure cladded with fibre cement boards with external walls filled with a polystyrene concrete mix.

“With strong winds – often 65km per hour in the Eastern Cape – the structure was designed with additional bracing, which was well worth it,” says Charl van Zyl, managing director of the Silverline Group. He adds that with Cradock having extreme temperatures in both summer and winter, it was imperative to give the client an energy efficient building with limited need for air-conditioning or heat pumps. “Constructing an energy efficient building saves the client the initial capital cost of purchasing air conditioners and in the long-term saving of about 10% on the running costs and maintenance of these items,” he says.

his time it's CAT Motors, a General Motors dealership in Cradock, which has built a state of the art 1 800m² facility in under six months, which is approximately three months faster than conventional building methods – saving on construction time of more than 30%. The project began in January 2013 and was completed on 30 June 2013.

The internal walls are cavity walls with Isover glass wool insulation. The building also had a requirement for a walk-in document safe, which was also constructed using the solid wall concept for the walls and roof, giving it a fire rating of no less than two hours.

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CAT Motors owner, Jacques Jordaan, says that he is satisfied that the new building has achieved at least a ten degree difference in comfort between the outside temperature and inside without the use of air-conditioners.

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LSFB

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LSFB “We moved into the building in the middle of winter in the very cold Eastern Cape and not once did we have to switch on a heater. The comfort levels are fantastic,” he says.

Barnard says LSFB is definitely much more energy efficient than more traditional construction methods – both with regard to ‘embodied energy’ of the materials and components, as well as ‘operational energy’ relating to heating and cooling of the building over its design life.

“A recent research project carried out by the CSIR indicated that an LSF building will require less than half of the energy needed to heat and cool a masonry residential building to comfortable internal temperatures,” Barnard says.

Turning to the floor, van Zyl says that 15% of a building's energy is lost through the floor and in this case they built the floor using a Geoplast Flooring Module which consists of recycled plastic modules which raises the slab off the ground and creates a ventilation 'space,' which can also be used for services. “This method is very useful in reducing energy loss but it also adds to the 'green factor' in construction for which Silverline Group is known,” van Zyl says.

Jordaan says that he is delighted that he decided to work with Silverline Group. “I still cannot believe the speed with which the building was completed and the quality of workmanship and the fact that everything came in on budget.

I believe LSFB is the future of construction in South Africa,” he says.

At the launch of the new dealership facility, GMSA Vice President, Vehicle Sales Service and Marketing (VSSM), Malcolm Gauld, commented on how impressed he was with the new facility. “This is a world class structure and, given the time in which it was completed and all the obvious advantages and quality, it is a remarkable achievement,” he said.

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A RC H ITE CTU R E

Southern Cross Station An undulated trapezoidal roof system

Image by Kristina D.C. Hoeppner.

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outhern Cross Station, formerly known as Spencer Street Station, began operations way back in 1859. The station is located on Spencer Street, between Collins and La Trobe Streets, and is the third busiest railway station in Melbourne, with average daily passenger traffic of 100 000. It serves the regional railway network operated by V/Line, The Overland rail service to Adelaide and the CountryLink XPT service to Sydney.

The station experienced a redevelopment that was initiated in 2002 and completed in 2006. It currently has 14 platforms.

Construction on two more platforms (15 and 16) began in 2009 and is expected to be completed by 2013. Development of separate tracks for metro rail services and V/Line passengers is also under way.

The 2002-2006 redevelopment project was undertaken to handle the current and anticipated increase in the number of new rail services. It formed part of the Victorian Government's $2bn â&#x20AC;&#x2DC;Revitalising Victorian Railâ&#x20AC;&#x2122; programme to improve passenger and rail service across the state.

The major attraction of the redevelopment project was the undulating wavy roof and the station's architectural design, for which it won several awards, including the Lubetkin Prize in 2007.

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Civic Nexus was responsible for building and financing the redevelopment project and is also responsible for operating the station for 30 years.

The redevelopment of Southern Cross Station began in 2002, with the master plan released in 2001. The estimated cost for the redevelopment phase came to around $350m.

The redevelopment project consisted of constructing a transport interchange facility for both rail and bus, a new entrance, a commercial office tower, residential towers, a north south bridge at the western part of the site for pedestrians, concourses on Collins Street and Bourke Street, a retail plaza, an 800 bay car parking facility and a separate shopping complex, between Bourke and La Trobe Streets. The old station was closed and brought down in 2004.

Southern Cross Station is popular for its undulated trapezoidal roof system covering an entire city block of about 60,000 square metres. It is 23m at its highest point. The roof was specially designed to allow the diesel fumes, hot air and exhaust gases to move upwards and be dispelled through louvres using the force of the existing winds.

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A RC H ITE CTU R E

Image by Rae Allen.

SOUTHERN CROSS STATION HISTORY The station started operations in 1859 as Spencer Street Station with a single platform and a dock platform in the north, serving primarily goods trains at night.

The station is located on Spencer Street, between Collins and La Trobe Streets, and is the third busiest railway station in Melbourne.

A platform was added in 1874 and the station was linked to Flinders Street Station from 1888 to 1894, through the construction of the Flinders Street Viaduct, which also allowed the running of passenger trains.

In 1915 the Flinders Street Viaduct was increased to four tracks and the period from 1918 to 1924 saw the increase of the station's platforms to 14, with provisions of electrification and pedestrian subway facility.

A modernisation in the 1960s saw the construction of a new station building replacing the iron shades which existed earlier, a 1 355ft main platform, extension of the subway to country platforms, an underground loop with platforms 9 and 10 forming part of the suburban section, construction of a new double-track viaduct and re-signalling of the first four tracks for bi-directional operations.

Image by MousyBoyWithGlasses.

The project also witnessed the use of ethylene tetrafluoroethylene (ETFE) for the first time in Australia for constructing a building. The roof system provides sufficient ventilation and daylight.

Construction work at the site also included fixing 250 piles which are 600mm-1 500mm in diameter, using the ROCKET and Golder Associates field implementation (GARSP) equipment. The ground conditions, which consisted of basalt rock, clay, sand and siltstone rock, necessitated the use of this equipment.

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The modernisation phase also increased the number of tracks connecting to Flinders Street to six. The station currently consists of 22 tracks.

SOURCES: Article first appeared on www.railway-technology.com Railway Technology. [online]. Available at: http://www.railwayt e c h n o l o g y. c o m / p r o j e c t s / s o u t h e r n - c r o s s - s t a t i o n redevelopment-australia/. [Date accessed 20 August 2013].

Leighton Contractors. [online]. Available at: http://www. leightoncontr actors.com. au/project s/southern - crossstation-2/. [Date accessed 29 August 2013].

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PE ST CO NTRO L & C LE A N I N G

Bats in the belfry.

Rats in the roof.

And that’s only the start of what the Roof Rats teams find lurking above our heads.

Words: James H Mitchell

A

t home or in the office, in the workshop, warehouse or factory, we all look straight in front of our noses. If we glance down, the floor’s so polished that – as Mom used to say – you could eat off it. And if we ever check it out, there’s a nice clean ceiling in plain sight.

But on the other side – inside that ceiling space – all too often it’s quite another story. Take a hospital: all visible surfaces are scrubbed and shined. No germ dare lurk on the walls and floors of the operating theatres or the wards. And yet, on the other side of the partitioning there can be pigeons, bats, rats and mice (dead or alive), fungal growth, dirt, dust and debris by the bucket-load. The effect on air quality – and therefore health – can be horrendous. But, because the root cause remains unseen, it’s all too often ignored. Out of sight, out of mind.

Sick Building Syndrome knocks productivity. There can be many causes, but one of the easiest to deal with decisively is the detritus of decaying insulation, animal remains, and airborne muck that’s found a free home.

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That’s where the Roof Rats come in. Their motto: “We clean where others fear to tread!”

First established in Gauteng and now also operating in Natal and the Western Cape, Roof Rats was the brainchild of ‘King Rat’ Diederik van ‘t Hof, who took ceiling clearance from what had been a casual hit-and-miss affair and transformed it into a fine art.

Roof Rats’ specialist teams use only professional, industrial vacuum cleaners that far surpass SABS requirements. These operate to the so-called HEPA standard, referring to High Efficiency Particulate Air filters that must trap at the very least, 99.97% of all airborne contaminants down to a miniscule size of just 0.3 micrometers.

Roof Rats teams bring in their own ladders, cables, lights, fire extinguishers and personal safety equipment. Where necessary they move insulation material to clean underneath – then they scrub the insulation itself before replacing it.

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PE ST CO NTRO L & C LE A N I N G Finally, the team takes away the mess they’ve sucked out of the roof area. How much might that be? Take just one day’s work on one residential site: the debris to be carted off totalled 19.5kg of dust and droppings, plus ten bags of assorted rubbish that included 9.4kg of bird droppings from one roost and another 12.5kg of nesting material… from just one nest!

Now consider a commercial site, such as one tackled recently in Illovo, northern Johannesburg. Uninvited guests included a large bat colony living in the roof: the eviction process involved removing the roof sheeting, cleaning the ceiling boards, installing a wire mesh and expander foam mix into all the cavities that the bats had colonised, as well as their access points, before finally replacing the roof sheeting and ensuring that all was once again waterproof and clean.

Result: a healthier environment. With a bonus: it’s also more attractive to potential tenants and prospective purchasers.

Roof Rats has recently won the Sage 702 Talk Radio Small Business Awards.

FOR MORE INFORMATION, CONTACT: (c) 072 767 1999 or 082 412 1830 (e) info@roofrats.co.za (w) www.roofrats.co.za James H Mitchell is a retired author and journalist (who likes to be sure that the only buzzing is in his head, rather than above it, in the ceiling).

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I N S U L ATI O N

Thermguard – ideal for low-cost housing Thermguard cellulose fibre insulation is a ceiling insulation product that is manufactured from recycled newsprint with a number of harmless household chemicals added to make the product fire retardent and insect and rodent resistant.

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n low-cost building sites, the house surface area can be anything from 40-60 or 70m² per house and thus are built fairly quickly. The houses are generally built on one site and are erected one next to the other.

Thermguard contractors are then called to site and with their unique blowing machine can blow insulation into houses very quickly and effectively. In fact, our contractors can insulate up to ten houses a day and at this rate offer excellent prices to our customers. We have been told by developers that we are, in fact, up to 20% more cost-effective than other conventional types of insulation.

The developer will not only receive good value on the price of the product but our contractors are Thermguard-approved and being independent sub-contractors, it is in their interest to see that they complete the work neatly and accurately.

Because of the speed of installation there are unlikely to be any delays.

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Thermguard is manufactured predominately from recycled newsprint, and so it is environmentally friendly. Newsprint that would often be discarded on landfill sites to decompose and also emit greenhouse gases is recycled to create this ecofriendly product. This dual reduction in air pollution amounts to a ‘Double Green Effect.’

FOR MORE INFORMATION, CONTACT: (t) 033 346 0111 (e) info@thermguard.co.za (w) www.thermguard.co.za

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PA I NT S & COATI N G S

Painting contractors visit coatings sector’s new training facility The SA Paint Manufacturing Association (SAPMA) and its training arm, the SA Paint Industry Training Institute (SAPITI) recently staged an extremely successful Open Day for painting contractors at SAPMA’s new Centre of Excellence in Springs.

Kenny Hall (left) and Andrew Ferguson, of Kyalami Painters, were among the painting contractors who were introduced to the training facilities during an Open Day at the new SAPMA/SAPITI Centre of Excellence in Springs recently by Deryck Spence (right) of SAPMA.

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he contractors were giving a tour of the complex and training facilities, during which they saw students currently undergoing training, and were briefed on future plans for the Centre of Excellence. The entire training curriculum was explained and demonstrations of training procedure were staged. The Chemical Industry Education and Training Authority (CHIETA) also spelt out the benefits of paint applicators utilising the government’s Work Skills Development Plan to obtain financial assistance for the training of applicators.

Deryck Spence, executive director of SAPMA, says the painting contractors were extremely impressed with what they regarded as a long overdue training facility for the coatings sector. “Several of the contractors indicated that they wanted to send staff for application training as soon as possible, and also showed strong interest in joining SAPMA,” Spence states.

“We offered generous discounts in training costs for the contractors in attendance, and we are planning another Open Day for contractors later this year.”

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The Centre of Excellence’s first intake of students took place on July 1 this year and the students are currently undergoing training incorporating practical paint application in the course, NQF level 2 – 6 Technical Training and Business Training for the Retail Sector, which is also open to non-technical students.

Training at the Centre of Excellence will be expanded in 2014 to include waterproofing, spraypainting, corrosion and powder coatings.

SAPMA’s training arm, the SA Paint Industry Training Institute (SAPITI), has over 25 years’ experience in providing essential technical skills training for the surface coatings industry. Its training courses include 11 distance learning modules based on the British Coatings Federation distance learning modules in terms of content methodology and assessment. BCF qualifications are recognised internationally.

These training modules, now accredited by the CHIETA, have been used by over 7 000 students since the introduction of the modules over two decades ago.

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