Kunal Chhatlani - Selected works | Georgia Institute of Technology

Kunal Chhatlani Selected works Georgia Institute of Technology

Index 01

Plug / Play

02

A Passage through Time

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Urban Repose

04

Light Space Modulator

05

Engineered Biosystems Building

06

Building Performance

07 08

Graduate Studio |Fall 2020

Graduate Studio |Spring 2020

Graduate Studio | Fall 2019

Graduate Studio | Fall 2019

Construction Technology | Spring 2020

Graduate Elective | Fall 2019

Design Space Exploration Graduate Elective |Spring 2020

The Wings of Peace

Graduate Elective | Fall 2019

Plug / Play

D+R Studio Fall 2020 Instructor: Debora Mesa Keywords: Modular Construction, Affordable housing, Physical model making, Housing Typology The project seeks to explore diversity and shared spaces as a catalyst in achieving affordability in housing.This project proposes a solution by creating possibilities of sharing living spaces. These shared spaces hold potential to be extend communal space creating avenues for incidental interactions.

Plug / Play responds by creating a system made f rom a single prefabricated panel which has the potential of creating functional and resilient spaces. Diversity through modularity is created by various permutation and combinations of spatial arrangement f rom one single prefabricated module design. The module can be used differently on various sites based on factors of density, growth and eff iciency.

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S ite | D ow ntown Lo s A n g el es | 7t h an d Wall St re e t

10,00 0

$1 1 ,0 0 0

30 %

Po p u l a t i on

Median In com e

H om eless

78%

42 .5%

67.5%

Affordability Index

Renter occup i ed h ousin g

Ag e b etwe e n 1 8- 6 0

2

72’

48’

Separating based on unit sized

12’

24’

Unit size based on maximum transportable size

I NDIVIDUAL / CO M M UN I TY Creating a system for growth ranging f rom an individual unit to the community level.

Exploring density of the system through construction and space planning.

3

Letters

Discrete 12’ x 24’ Parts

Words

Floor module

Sentence

Apartment unit cluster

Phrases

Community living

4

5

PLAY / GROWTH Using the module as a means of growth vertically and horizontally as floor plate and structural support system. Arrangement as to create community clusters and understanding the urban edge created along the ground level.

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Affordability Diverse Interactions Space Efficiency

Typical Residential Layout connected by unusable passages

Affordability Diverse Interactions Space Efficiency

50% Shared layout

Affordability Diverse Interactions Space Efficiency

100% Shared Layout

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Residential Module

Communal Spaces

PARTI DIAGRAM | The above diagram explores the idea of connectivity between homes through communal spaces.

8

9

PLAY / DENSITY The model iteration explores density through vertical connections between modules through structural walls. Creating more communal green spaces through stacking and rotating the module.

Applying the principles learned through previous iterations of growth and eff iciency in creating diverse and dense communities.

10

Cafe & Retail

Height

North Light

Height

SITE EXPLORATION | Examining the urban condition of the site through the lens of daylight availability, wind flow and urban context like downtown metropolitan area.

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Typical Low income Unit Layout Units Type Area Price Range

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185 Shared living 300 Sq. ft $ 1200

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Mid Income Unit Layout Units Type Area Price Range

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20 1 BHK & 2 BHK units 580 Sq. ft -890 Sq. ft $ 2100 - $ 3500

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High Income Unit Layout Units Type Area Price Range

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5 3 BHK & 4 BHK units 1450 Sq. ft -1750 Sq. ft $ 4500 - $ 5500

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Section through Housing Typologies 19

20

21

Interior view through shared corridor 22

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Interior view through shared corridor 24

Section through Communal Spaces 25

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Interior view of Communal Space

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28

DLT and Concrete composite flooring Module 12’ x 24’

Steel truss

Concrete flooring Module 12’ x 24’

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Prefabricated Concrete walls

L- shaped Steel Plate Concrete slab 3” thk

Steel plate for connection plate

Dowel Laminated timber 10” thk

Concrete structural wall

Steel Dowel connecting DLT panels

MATERIAL ASSEMBLY | Using prefabricated panels of Dowel Laminated Timber and Concrete sized 12’ x 24’ x 1’ as Roof modules and Concrete panels as Floor modules.

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Exterior view through Podium

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A Passage Through Time Portman Studio Spring 2020 Instructor: Charles Rudolph

Keywords: Adaptive reuse, Carbon Emission, Material Accountability, Circular Economy Through the initial analysis and subsequent reconfiguration of an existing urban building, the idea was to experiment with the properties and capacities of both renewable and reused material and their application to new hybridized forms of building assembly and urban social space. The Proposal transforms the existing building into a library for the community by inserting a wooden box which houses the circulation, book-stacks and Garden. Maintaining the existing structural system the new insertion brings in light and acts as a transition between the formal and informal zones in the building. The formal side of the building keeps the entire building facade intact serving as a memory of the old whereas the informal side of the building resembles the ruin that remains by performing stereotomic traits on the brick facade.

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Existing H. L. Green Building, Atlanta The setting for this ambitious exploration is south downtown Atlanta, at the intersection of Peachtree St. and Martin Luther King Boulevard. The H.L Green Building, a deco-modern masonry-clad structure built in 1933, anchors the northern end of a block of low-rise commercial structures.

The 1980’s era Fulton County Government Center complex is across the street to the east, and the white marble Modern-style Martin Luther King Federal Building (built by the US Postal Service) is two blocks to the west, backing up to the railroad tracks at the gulch.

A once-thriving social space, it was cut off from “upper” downtown and the Fairlie Poplar district alongside the Peachtree St. corridor by construction of Five Points station. Broad Street’s shopping corridor forms an axis with the Five Points and Garnett MARTA stations at either end.

Building 15 years before the current H. L. Green

Existing Building to be redeveloped 34

Re-Source: Architectural Experiments in Radical Re-Use and Regenerative Buildings 35

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Surgical Inserstion

1

Existing Building

2

Base Concept

3

Garden Insertion

4

Circulation & Book-Shelves

5

Program Distribution

37

Facade Reuse

1

Brick Facade

2

Surgical Removal

3

Spatial Reuse

4

Tectonic VS Stereotomic

5

Proposed Design 38

39

40

Old Building kept intact

41

New Spatial confirguration through reuse

42

Re-use

Re-use

CARBON EMISSION

(TONS/CUBIC FEET)

Raw

Material Accountability 43

44

Circular Economy of Materials

45

CARBON EMISSION

(TONS/CUBIC FEET)

Total Embodied Carbon 2.1 Million Tons/Cubic Feet

46

URBAN REPOSE Advanced Studio 1 Fall 2019

Instructor: Michael Gamble

Keywords: Descriptive Geometry, Experiential Phenomena, Masonry/Stereotomy, Sacred and Profane Space.

As U.S. cities are once again resettled, many new developments are focused on profit driven commercial models which preclude speculative thinking around simple existential needs like repose and remembrance. The project seeks to counterbalance this trend and move away f rom generic consumer urbanity, towards the design of a place that promotes contemplation, excites the senses, and provides a strong threshold between what Mircea Eliade defines as the sacred and profane - a simple yet profound dialectic that can fuel the architectural and experiential imagination.

The challenge is to create a house of meditation/interment and a garden, which embodies the highest aspirations of architecture by elevating the elemental, acknowledging the visceral, and promoting the poetic.

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SITE DESCRIPTION AND PROGRAM The site is located in the northeast corner of the Bellwood quarry which has served Georgia city for more than 100 years as a granite quarry. The granite carved f rom Bellwood was used all over Georgia as pavements, flooring and curbs. After 100 years of excavating the site, the current site resembles a dilapidated ruin with rough edges and steep slope. The site is proposed to become a part of Atlanta’s Beltline project and in future will serve as the city’s largest public park.

The project of a columbarium carries a lot of emotional weight and the design responds by creating a monumental volume for the columbarium and meditation areas oriented according to the sun position.

The program consists of two primary meditation areas, one tertiary and secondary mediation area placed adjacent to the columbarium for 10,000 urns. The meditation areas are active according to the time of the day. The vertical circulation is through a staircase spanning throughout the columbarium along with service areas and lifts for better accessibility.

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“Before transforming a support into a column, a roof into a tympanum, before placing stone on stone, man placed the stone on the ground to recognize a site in the midst of an unknown universe: in order to take account of it and modify it.�

- Kenneth Frampton

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50

51

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KERN FORM The contrast of a perfect cuboidal form in the middle of craggy landscape of the site amplifies the monumental scale.

The enormous void created inside the perfect cuboid using a series of tapering cylindrical form stacked on top of each other with an oculus light source. Meditation rooms cut through the external cuboid to allow natural light into the columbarium.

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KUNST FORM The columbarium space, because of its overwhelming scale, reminds people of their fleeting existence and the staircase allows people to reach the cell of their loved one to pay their respects by placing mementos like photographs, flowers or other such memorabilia which can serve as a memory of the departed.

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“The concept of the enactment and reenactment of man through history is not only metaphorical and mythical but also corporeal, in that body reconstitutes the world through its tactile appropriation of reality�

- Kenneth Frampton 57

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Step 1

59

Step 3

Step 2

Step 4

60

61

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ENGINEERED BIOSYSTEMS BUILDING Construction Technology - Spring 2020 Instructor: Michael Gamble Analysis: Natural Elements, Site Ecology, Light as a design driver [diagramming, drawing, model making] Synthesis: Model Using a Cube of 7in x 7 in and removing 50% of the solid to create a light space modulator 63

5 1

C

2

B

6

9

A

4

11

10

1. Steel structure 2. Curtain Wall 3. Column 4. Metal panel cladding 5. Corrogated Metal Panel 6. Spandrel Panel 7. Metal Plate 8. Rigid Insulation 9. Concrete Slab and Beam 10. Concrete retaining wall 11. Dry wall

ZONE SECTION SCALE : 1’ = 1/8” 64

A2

9 13

A1

2

4 11

9

1. Steel structure 2. Double Glazed Panel 3. Column 4. Metal panel cladding 5. Corrogated Metal Panel 6. Spandrel Panel 7. Metal Plate 8. Rigid Insulation 9. Concrete Slab and Beam 11. Dry wall 12. Batting Insulation 13. Mullion 65

A SCALE : 1’ = 1/4”

A22

13

2 12 18

16

A2

17

16

18

A12 2

4

18

2. Double Glazed Panel 4. Metal panel cladding 6. Spandrel Panel 7. Metal Plate 8. Rigid Insulation 9. Concrete Slab and Beam 12. Batting Insulation 13. Mullion / Transom 15. Sealant 16. Z- clips 17. Metal Studs 18. Drip Mould

A11 16

9

A1 66

5 1

14

4 8

C1 3

2

9 13

12

1. Steel structure 2. Double Glazed Panel 3. Column 4. Metal panel cladding 5. Corrogated Metal Panel 6. Spandrel Panel 7. Metal Plate 8. Rigid Insulation 9. Concrete Slab and Beam 12. Batting Insulation 13. Mullion 14. Flashing 67

C SCALE : 1’ = 1/4�

18 4 21

C11

15 8 13 6

2

C1

C11 18 4 21 15 8 13 6

2

C1 68

25 24

20 7

21

16 8 4 17 12 23

18 13

8. Rigid Insulation 12. Batting Insulation 13. Mullion / Transom 15. Sealant 16. Z- clips 17. Metal Studs 18. Drip Mould 19. Roller shade 20. Floor Heater 21. Waterproofing Membrane 23. GWB Black Paint 24. SAF Behind Counter Flashing 25. Flashing 69

C11 SCALE : 2’ = 1”

2 13

8

20

18 12

16 8

17

2. Double Glazed Panel 4. Metal panel cladding 6. Spandrel Panel 7. Metal Plate 8. Rigid Insulation 12. Batting Insulation 13. Mullion / Transom 15. Sealant 16. Z- clips 17. Metal Studs 18. Drip Mould 20. Floor Heater

A22 SCALE : 2’ = 1”

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BUILDING PERFORMANCE EVALUATION Building Physics Modeling- Fall 2019 Instructor: Tarek Rakha - Present a general view of (and how to computationally model) building physics processes in architecture.

- Provide an evidence-based performance analysis f ramework to inform diagnostics and design using simulation.

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CLIMATE ANALYSIS: BELLWOOD QUARRY, ATLANTA Site area:20,272 sq m Climatic zone as per ASHRAE: Hot-Humid

Psychromatic chart

Hourly data: Dry Bulb Temperature(°C)

Ideal window shading with respect to Orientation

Wind Rose

For passive solar heating face most of the glass area south to maximize winter sun .

72

DAYLIGHT AVAILABILITY EVALUATION Site: Bellwood Quarry, Atlanta

Second Iteration

Application of the DIVA daylighting simulation advanced metrics of evaluation for daylit spaces.

The Evolution of the project is based on understanding of site context, design goals, factors affecting daylighting performance and control strategies for natural light.

Goals: - Device and Investigate static shading solutions for the South and West facade - Untapped potential of West and South facade in office buildings.

- Aesthetically and logically designing shading devices using daylight availability matrix.

Baseline Model

73

First Iteration

Final Iteration

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THERMAL AND ENERGY PERFORMANCE EVALUATION Site: Bellwood Quarry, Atlanta Application of the Ladybug tools (Honeybee, specifically) advanced metrics of evaluation for thermal comfort and using Open studio to calculate EUI and reduce overall energy consumption through modulation of Window-to-Wall ratio and materials.

Baseline Model

December 21st

June 21st

Operative temperature

December 21st

June 21st

1st Iteration

December 21st

June 21st

Final Iteration

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PMV

Energy Load

Energy consumption per month

Energy consumption throughout the year Heating loads Cooling loads

Electric Use Intensity

Electric use Intensity per meter

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Design Space Exploration Graduate Elective Spring 2020

Instructor: Roya Rezaee

Keywords: Design of Experiments, Optimization, Simulation, Energy and Daylight analysis, Cost analysis The Course focuses on theoretical and practical understanding of collaborative multi-performance building analysis in design practice. Learning computational techniques to help generate a large space of design options, simulate a variety of building performances, evaluate and explore the options, and make informed design decisions in a systematic framew ork called Design Space Construction (DSC) that was developed at Perkins & Will. The modeling and simulation covered the following domains: Parametric Modeling, Solar, Energy, Air Flow and Ventilation, Daylighting, View, Cost, Statistical Analysis, and Data Visualization.

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M. L. K. Sr. School, Atlanta One of the country’s first structures to be named after Dr. Martin Luther King is surrounded by old-growth trees, a lush park, and a budding neighborhood.

To let the light in, the architects made a concrete surgery —a complex job, given the steel beams that laced throughout the building and the inability to move walls and added vertical windows that complement the original Brutalist style, offer a fresh look, and, most important, provide muchneeded daylight.

The existing structure, built in 1973, has been given new life with increased natural daylight, a glass multi-story entrance, and splashes of color throughout.

UDI above 3000 Lux

UDI under 3000 Lux

High heat gain from south

No sunlight in the center

Limited visual connection

High Electricity consumtion

UDI between 300- 3000 Lux 78

Value Assessment for Analysis Daylight Range Optimization

Cost and Value Optimization Design Simulation Experiment Visual Transparency Analysis

Energy & Thermal Optimization

Daylight & Energy

Atlernative Generation

Impact Analysis

Value Assessment

UDI & EPC

Access Value

Gatekeeper

Designer

Decision Maker

Stakeholder

Objective Formulation

Generate Alternatives

Analyze Impacts

WWR (N,S,E,W) Fin Depth Fin Rotation Glazing VLT Shell U- value

Computational Infrastructure

Data export and visualization Computational Infrastructure used for analysis

Colibri

Colibri

79

Excel + Drive Drive data.csv

PCP PCP

Design Facade Exploration

2,560,000 Possible Combinations of Facade Inputs

Options

Total

WWR (N)

0.3, 0.4, 0.5, 0.6

4

WWR (S)

0.3, 0.4, 0.5, 0.6

4

WWR (E)

0.3, 0.4, 0.5, 0.6

4

WWR (W)

0.3, 0.4, 0.5, 0.6

4

Fin Depth

0.6, 0.9, 1.2, 1.5

4

Fin Rotation N

-30, -15, 0, 15, 30

5

Fin Rotation S

-30, -15, 0, 15, 30

5

Fin Rotation E

-30, -15, 0, 15, 30

5

Fin Rotation W

-30, -15, 0, 15, 30

5

Glazing VLT

0.4, 0.5, 0.6, 0.7

4

80

Design Space Construction for Daylight and Energy

Sensitivity Analysis for Window - Wall Ratio

Leverage Profiler WWR_E

WWR_W

Effect of parameters

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WWR_S

WWR_N

Sensitivity Analysis for Fin Depth and Rotation Leverage Profiler Fin Depth

Fin Rotation E

Fin Rotation W

Fin Rotation S

Fin Rotation N

Effect of parameters

82

Data visualization of High Valued Results of 36 iterations Highest UDI & Lowest EPC

Highest UDI

83

High UDI & Low EPC

Lowest EPC

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THE WINGS OF PEACE Media and Modeling II - Fall 2019 Instructor: James Park This study aimed to analyze the selected architectural project, in our case the WTC Transportation Hub, in terms of its mass, volume and building systems. This analysis was then utilized to derive a possible parametric logic for this precedent form via a Grasshopper script. The finality of this exercise was the optimization of the derived logic via Galapagos, to achieve a building shape and size that would provide the best output with a fixed set of input parameters.

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WTC Transportation Hub Santiago Calatrava New York, U.S.A 2016 The hub is in the World Trade Centre complex and within the Financial District neighborhood of Manhattan, New York City.

With a 168-foot-high A-f rame and a white winged organic form, Calatrava originally conceived the Oculus to represent a “bird being released from a child’s hand as a gift of life and hope. He hoped the building to be “a witness of belief that we can overcome the tragedy”, a symbol of camaraderie of the American people and a gift to the community.

The white curved supports that extend outward like wings and the skylight, run the length of the concourse that is approximately 111 meters long and 43 meters wide. These supports are arranged formally along the length of the larger curve of the geometry and structurally interlock high above the ground. The space between these is glazed to allow maximum daylight within the building.

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FORMAL ANALYSIS- SCHEMATA

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

Step 9

Analysis of Entrance - The Oculus head follows the shape of the skylight arc and the volume of the head follows the gradual scale of the fins.

Analysis of Fins in Plan - The overall plan of the fins forms a parallelogram which is the basic geometry behind it.

Analysis of Entrance - The Oculus head follows the shape of the skylight arc and the volume of the head follows the gradual scale of the fins.

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Step 1: Analysis of the sectional Geometry - The basic shape of the fins is derived from the plan and skylight arcs.

Analysis of Fin Shape - The outline of the fins have parametric elements along with fixed elements like the thickness of the fin at the base as it is independent of the fin shape.

Step 10

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Analysis- of Skylight - The skylight is elliptical in planand and consists of 3 arcs AnalysisAnalysis of Glass Envelope - The glass envelope is derived the Analysis of Fins Skylight The skylight elliptical in plan of Glass Envelope - The glassbyenvelope is derived by the Analysis of in Side Elevation - The is shape of the skylight arc is consists of 3 arcs creating a triangular shape in section. The edges of the roof skylight arc and the larger arc at the base. The glazing system used creating athetriangular shape inand section.

The edges of the roof skylight arc and the larger arc at the base. The glazing system used analyzed through longitudinal sectionare the shape ofwith theafins as an envelope can be one of the parameters of design. encompassing the skylight straight in plan filletted arc at its end.

Step 11 Step 12 follows a parabolathe which can beare parameterized create anyashape. as an envelope can be one of the parameters of design. encompassing skylight straight intoplan with filletted arc at its end.

SAMPLE DERIVATION - BUILDING SYSTEMS I - LEVELS

a a

a

b b

a

b

b

1

2

3

4

5

6

7

8

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SAMPLE DERIVATION -BUILDING SYSTEMS 2&3 - STRUCTURE AND ENCLOSURE

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1

2

3

4

5

6

7

8

9

10

11

12

SAMPLE ITERATIONS - LEVELS

SAMPLE ITERATIONS - STRUCTURE

SAMPLE ITERATIONS - ENCLOSURE

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