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Sustainability

Implementation

ECBC Compliance Report

L&T West, Powai

Confidential and Proprietary: Any use of this material without specific permission of TRANSVEN is strictly prohibited

2

CONTENTS

EXECUTIVE SUMMARY ................................................................................................................................... 4

METHODOLOGY ............................................................................................................................................. 4

CLIMATE ANALYSIS for Mumbai, India .......................................................................................................... 5

Solar Radiation Chart ................................................................................................................................. 5

Psychrometric Chart .................................................................................................................................. 5

BENCHMARK - ECBC Performance ................................................................................................................ 6

ECBC benchmarks for Residential Buildings .............................................................................................. 6

ECBC benchmarks for Commercial Buildings ............................................................................................ 6

Energy Use Estimation of Project Using ECBC Benchmark Design Features ............................................. 6

Proposed Building– Design performance ...................................................................................................... 7

Design Comparative for with ECBC Standards .......................................................................................... 7

Wall Construction .......................................................................................................................................... 8

Wall Assembly W1 – Residential ............................................................................................................... 8

Wall Assembly W2– Commercial Buildings ............................................................................................... 8

Roof Construction .......................................................................................................................................... 9

Roof Assembly R1– Residential Buildings Towers 1 - 6 ............................................................................. 9

Roof Assembly R2 – Commercial and Retail Spaces .................................................................................. 9

Glazing ..................................................................................................................................................... 10

Glazing G1– Residential Towers 1 - 6 ...................................................................................................... 10

Glazing G3 – Commercial Buildings ......................................................................................................... 10

Additional Trade off’s .................................................................................................................................. 10

Results and Comparative ............................................................................................................................. 11

Segment 1 - Residential Buildings – Tower 1 to Tower 6 ........................................................................ 12

Segment 2 –Commercial Buildings A ....................................................................................................... 13

Segment 3 –Commercial Buildings B ....................................................................................................... 13

Segment 4 –Commercial Building - Retail ............................................................................................... 14

ANNEXURE 1 –Simulation Results ............................................................................................................... 15

Tower 1 .................................................................................................................................................... 15

Tower 2 .................................................................................................................................................... 15

Tower 3 .................................................................................................................................................... 16

Tower 4 .................................................................................................................................................... 16

Tower 5 .................................................................................................................................................... 17


3

Tower 6 .................................................................................................................................................... 17

Commercial Building A ............................................................................................................................ 18

Commercial Building B ............................................................................................................................ 18

Commercial Building - Retail ................................................................................................................... 19

ANNEXURE 2 – WWR ................................................................................................................................... 19


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EXECUTIVE SUMMARY

L&T realty is underway to develop one of most

prestigious projects in the rapidly developing area of

Powai, Mumbai. It is a gated complex situated across

the road from Powai Lake and garden and adjacent to

L&T Business Park. It is well connected to various

business hubs, hotels, high street & fine dining where

essential services like schools, railway stations and

hospitals can be all found in the vicinity. The project

comprises of residential towers (T1-T6) and

commercial offices buildings (A & B) along with a

retail building. All the Buildings are yet to be

constructed which is to begin very soon. As a part of

their sustainability and environment responsibility

L&T realty intends to achieve energy efficiency and

resource conservation from their all upcoming and

ongoing projects.

As a part of this endeavor the scope of this study is to

examine the influence of the proposed building

design features to help meet with the regulatory

energy design benchmarks stipulated in the ECBC

guidelines. The estimated energy consumption from

the proposed design is compared with the estimated

energy consumption using ECB Benchmark design

standard in the proposed design layouts. As the

project construction is done is different phases, this

leads to a split mechanism to explore the intent of

this study.The method to highlight ECBC compliance is

by highlighting the difference in estimated annual

energy by the overall project.

The graph above highlight the energy consumption

difference achieved by virtue of envelope measures

and savings from efficient lighting fixtures.

The proposed design is estimated to use 3.35% less

energy than energy use estimated using ECBC

benchmark design standards.

METHODOLOGY

The scope of this study is to examine the influence of

the proposed building design features to help meet

with the regulatory energy design benchmarks

stipulated in the ECBC guidelines. The study examines

the influence of features incorporated in building


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design to help achieve energy efficiency. The

estimated energy consumption from the proposed

design is compared with the estimated energy

consumption using ECB Benchmark design standard in

the proposed design layouts.

The former part of the report shares the Benchmark

compliance codes and specifications stipulated by

ECBC whereas the latter section compares presents

the proposed design specification continued by the

energy use estimations and comparative. The design

features of the proposed building design are referred

as PROPOSED CASE. ECBC stipulated baseline design

is termed as BENCHMARK CASE in the report.

The performance achieved by virtue of design from

the proposed building is compared with benchmark

performance observed using envelope specifications

as per ECBC standards. The performance is further

enhanced with additional energy trade-offs, such that

the expected energy consumed by the project is less

than the energy expected to be consumed using

absolute design standards by ECBC.

The project buildings is divided into Two categories.

This differntiation is because the design properties

and function of the Two segments are different.

However the compliance is highlighted for the overall

project and not as Two segregated stratigies.

Segment

1

Proposed

Residential

buildings

Tower 1 to

tower 6

Segment

2, 3 and 4

Proposed

Commercial

buildings

Commercial A,

B & Retail

CLIMATE ANALYSIS for Mumbai,

India It is important to identify key external climatic

conditions for this site which have influence on the

solar heat gain and solar insolation findings.

LOCATION:Powai, Mumbai, Maharashtra, India

CLIMATE ZONE: ECBC type: Warm and Humid

Solar Radiation Chart

Monthly diurnal averages for available and direct

solar radiation.

The site by virtue of its location has abundance of

solar exposure and can benefit from it in the winter

periods. Solar exposure from summer periods can be

avoided.

Psychrometric Chart

The psychometric chart offers insights into strategies

that can be adopted to meet thermal comfort while

Building 1

Building 2


6

being energy efficient. A combination of active and

passive strategies can be induced in design that can

collectively perform to induce conservation.

Best design fit strategy.

BENCHMARK - ECBC Performance

The energy performance of proposed case is

compared with performance achieved using design

standards of ECBC. The baseline/ benchmarks for the

buildingswere established after calculating the WWR

(Annexure 2)

ECBC benchmarks for Residential Buildings

Parameters of Design

features

ECBC

Parameters

Day time building

Exterior WallConstruction-

U Value: W/m2K 0.44 (max)

Roof Construction-

U Value: - W/m2K 0.409 (max)

Roof Finish- Reflectivity 0.30

Fenestration type Vertical

Fenestration SHGC

Coefficient (rated) 0.25 (max)

Fenestration

U-value : W/m2K 3.30 (max)

HVAC - COP 2.2

ECBC benchmarks for Commercial Buildings

Parameters of Design

features

ECBC

Parameters

12 hour use building

Exterior WallConstruction-

U Value: W/m2K 0.44 (max)

Roof Construction-

U Value: - W/m2K 0.409 (max)

Roof Finish- Reflectivity 0.30

Fenestration type Vertical

Fenestration SHGC

Coefficient (rated) 0.25 (max)

Fenestration

U-value : W/m2K 3.30 (max)

Energy Use Estimation of Project Using ECBC

Benchmark Design Features

Building name ECBC Base Case

Segment

1

Tower 1 1087.3

Tower 2 1383.8

Tower 3 994.0

Tower 4 1035.8

Tower 5 1302.7

Tower 6 920.9

Segment

2

Commercial

Building A 6433.3

Segment

3

Commercial

Building B 6433.3

Segment

4 Retail 2611.9

Overall 22202.8


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Proposed Building– Design

performance

The construction technology, envelope parameters,

and design specifications for all the types of

buildingsnamely Residential, Commercial and

Healthcare are given below. Their design

specifications are compared with the corresponding

ECBC standards.

As it can be observed from the table in the following

pages only few design specifications in the proposed

design comply with the ECBC design standards.

Thereby a prescriptive approach to highlight

compliance cannot be adopted. The detail of

envelope design is further shared

Design Comparative for with ECBC Standards

Parameters of

Design features

Segment 1

Residential buildings- T1 to T6

Segment 2, 3 & 4

Commercial Towers A, B & Retail

Design Details ECBC

Compliance check Design Details

ECBC

Compliance check

Exterior Wall Construction-

U Value: W/m2K 2.51

NO (MAX 0.44)

0.654 NO

(MAX 0.44)

Roof Construction-

U Value: - W/m2K 2.17

No (MAX 0.409)

0.33 YES

(MAX 0.409)

Roof Finish- Reflectance

coefficient. 0.45

YES (MIN 0.30)

0.45 YES

(MIN 0.30)

Fenestration type

Vertical Single NA Double NA

Fenestration SHGC

Coefficient (rated) 0.82

NO (MAX 0.25)

0.31 No

(MAX 0.25)

Fenestration

U-value : W/m2K 5.7

NO (MAX 3.30)

1.8 YES

(MAX 3.30)

Fenestration VLT

Coefficient 0.88

YES (MIN 0.27)

0.38 YES

(MIN 0.13)

Overhangs/ Shading All windows NA None NA

HVAC COP 3.1

(BEE 3 STAR)

YES (MIN 2.2)

Same as ECBC

Base Case NA

Buildings Wall type Roof type Glazing type

Segment1

Tower T1 W1 R1 G1

Tower T2 W1 R1 G1

Tower T3 W1 R1 G1

Tower T4 W1 R1 G1

Tower T5 W1 R1 G1

Tower T6 W1 R1 G1

Segment2 Commercial Tower A W2 R2 G2

Segment3 Commercial Tower B W2 R2 G2

Segment4 Retail Building W2 R2 G2


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Wall Construction

Details of the two existing wall construction

assemblies are shared herein.

W1: Wall Assembly Type 1: Wall assembly for the

residential buildings.

W2: Wall Assembly Type 2: Wall assembly for the

Commercial and Retail buildings

Wall assembly details ‘U’ Value

W1 2.51

W2 0.65

Wall Assembly W1 – Residential

Wall W1 –The proposed building wall assembly is of

RCC Wall with Gypsum plaster.

Wall Assembly Details - W1

Material

Layer

Thickness

Thermal

Conductivity,

K

Thermal

resistance, R

(ft) (Btu/h·ft·°F) (h·ft2·°F/Btu)

Exterior Air

Resistance - - 0.250

Exterior POP

plaster 0.039 0.12 0.328

RCC Wall 0.755 1.12 0.674

Interior POP

plaster 0.039 0.12 0.328

Interior Air


Total R Value 2.260

Overall U Value (1/R) (btu/ft2-F) 0.442

Total U Value (1/R) (W/m2-K) 2.512

Wall Assembly W2– Commercial Buildings

Wall W2–The proposed building wall assembly is of

AAC Wall with Gypsum plaster.

Wall Assembly Details - W2

Material

Layer

Thickness

Thermal

Conductivity,

K

Thermal

resistance, R


Exterior Air


Exterior POP

plaster 0.039 0.12 0.328

AAC Block

Wall 0.656 0.09 7.098

Interior POP

plaster 0.039 0.12 0.328

Interior Air


Total R Value 8.684




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Roof Construction

Following is the roof assembly for the project.

Roof assembly details ‘U’ Value

R1 2.17

R2 0.33

Roof Assembly R1– Residential Buildings

Towers 1 - 6

Roof R1 –The roof assembly used for the residential

buildings are made up of RCC slab with brick bat coba

for water proofing.

Roof Assembly Details - R1

Material

Layer

Thickness

Thermal

Conductivity

Thermal

resistance

(ft) (Btu/h·ft·°F) (h·ft2·°F/Bt

u)

Exterior Air

Resistance - - 0.25

Tiles 0.059 0.64 0.09

Cement

Screed 0.115 0.81 0.14

Brick Bat

Coba 0.361 0.36 0.99

Concrete 0.492 1.33 0.37

Cement 0.039 0.42 0.09

Interior Air

Resistance - - 0.68

Total R Value 2.62



Roof Assembly R2 – Commercial and Retail

Spaces

Roof R2 –The roof assembly used for the commercial

and retail spaces of RCC slab, XPS insulation with

chemical coating for water proofing.

Roof Assembly Details – R2

Material

Layer

Thickness

Thermal

Conductivity

Thermal

resistance


Exterior Air


Tiles 0.059 0.64 0.093

Cement

Screed 0.115 0.81 0.142

Insulation 0.246 0.02 15.209

Bitumen 0.039 0.12 0.341

Cement

Screed 0.115 0.81 0.142

Concrete 0.492 1.33 0.370

Interior Air


Total R Value 17.227




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Glazing

Details of the three types of Glazing are:

G1:Glazing Type 1: Glazing used for proposed

Residential buildings.

G2: Glazing Type 2: Glazing used for proposed

commercial buildings.

Glazing Type

G1

Saint Gobain - SGG Planilux Single

G2

KT - 155 Double

Glazing G1– Residential Towers 1 - 6

Glazing G1 – The glass for the project is a SGU - Saint

Gobain SGG Planilux

Glazing specifications – G1

Type SHGC ‘U’ Value VLT

Single 0.82 5.7 0.88

Glazing G3 – Commercial Buildings

Glazing G2– The glass proposed for the project is a

KT - 155

Glazing specifications – G2

Type SHGC ‘U’ Value VLT

Double 0.31 1.8 0.38

Additional Trade off’s

In addition to building envelop the project saves from

reduced lighting load. This reduction in lighting is

from public areas – corridor lighting, staircase lighting.

This is achieved from use of LED light source.

Reduction in lighting load – Lighting power density.

Space

Description

Base Case

Wattage

(W/m2)

Base Case

Wattage

(W/ ft2)

Proposed

Case Wattage

(W/ft2)

Dwelling

Units 11.8 1.10 1.10

Corridor/

Transition 5.4 0.50 0.35

Stairs Active 6.5 0.60 0.42

Restrooms 9.7 0.90 0.63

Food Prep/

Kitchen 12.9 1.20 1.20

Office 11.8 1.10 1.10

Electrical

Room 16.1 1.5 1.05

Store Room 8.6 0.84 0.58

Confidential and Proprietary: Any use of this material without specific permission of TRANSVEN is strictly prohibited 11

Results and Comparative

The energy performance of the proposed case with

two variations is compared with Benchmark

performance observed using ECBC standards. The

comparative between the two are shared below for

the complete project.

ECBC

Benchmark

case

(MWh)

Proposed

case

(MWh)

Energy Consumption

Estimation 22202.8 21460.03

Please refer to Annexure 1

The proposed design is estimated to use 3.35% less

energy than energy use estimated using ECBC

benchmark design standards.

Building name ECBC Base Case Proposed Design Performance Comparative

Segment 1

Tower 1 1087.3 1032.10 5.08%

Tower 2 1383.8 1313.00 5.11%

Tower 3 994.0 953.40 4.08%

Tower 4 1035.8 1012.60 2.24%

Tower 5 1302.7 1236.90 5.05%

Tower 6 920.9 885.03 3.89%

Segment 2

Commercial Building A 6433.3 6341.20 1.43%

Segment 3

Commercial Building B 6433.3 6260.30 2.69%

Segment 4

Retail 2611.9 2425.50 7.14%

Overall 22202.8 21460.03 3.35%


12

The energy performance segment wise is shared below.

Segment 1 - Residential Buildings – Tower 1 to Tower 6

ECBC - Benchmark case Proposed case

Energy Consumption Estimation 6724 6433


13

Segment 2 –Commercial Buildings A



Segment 3 –Commercial Buildings B




14

Segment 4 –Commercial Building - Retail


Energy Consumption Estimation 2439.4 2407.6


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ANNEXURE 1 –Simulation Results Tower 1

Electricity

MWh

0 degrees 90 degrees 180 degrees 270 degrees Average Base Case Proposed Case

Space Cool 313.8 310.2 312.0 310.6 311.7 244.1

Heat Reject. 0.0 0.0 0.0 0.0 0.0 0.0

Refrigeration 0.0 0.0 0.0 0.0 0.0 0.0

Space Heat 0.0 0.0 0.0 0.0 0.0 0.0

HP Supp. 0.0 0.0 0.0 0.0 0.0 0.0

Hot Water 0.0 0.0 0.0 0.0 0.0 0.0

Vent. Fans 29.3 35.0 28.0 35.3 31.9 60.6

Pumps & Aux. 0.0 0.0 0.0 0.0 0.0 0.0

Ext. Usage 0.0 0.0 0.0 0.0 0.0 0.0

Misc. Equip. 303.5 303.5 303.5 303.5 303.5 303.5

Task Lights 0.0 0.0 0.0 0.0 0.0 0.0

Area Lights 440.3 440.3 440.3 440.3 440.3 423.9

Total 1,086.9 1,089.0 1,083.8 1,089.6 1,087.3 1,032.1

Tower 2

Electricity

MWh


Space Cool 399.4 394.7 397.1 395.2 396.6 310.5

Heat Reject. 0.0 0.0 0.0 0.0 0.0 0.0

Refrigeration 0.0 0.0 0.0 0.0 0.0 0.0

Space Heat 0.0 0.0 0.0 0.0 0.0 0.0

HP Supp. 0.0 0.0 0.0 0.0 0.0 0.0

Hot Water 0.0 0.0 0.0 0.0 0.0 0.0

Vent. Fans 37.2 44.5 35.6 44.9 40.6 76.7

Pumps & Aux. 0.0 0.0 0.0 0.0 0.0 0.0

Ext. Usage 0.0 0.0 0.0 0.0 0.0 0.0

Misc. Equip. 386.3 386.3 386.3 386.3 386.3 386.3

Task Lights 0.0 0.0 0.0 0.0 0.0 0.0

Area Lights 560.4 560.4 560.4 560.4 560.4 539.6

Total 1,383.2 1,385.8 1,379.3 1,386.7 1,383.8 1,313.0


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Tower 3

Electricity

MWh


Space Cool 257.3 279.0 274.1 271.6 270.5 222.44

Heat Reject. 0.0 0.0 0.0 0.0 0.0 0

Refrigeration 0.0 0.0 0.0 0.0 0.0 0

Space Heat 0.0 0.0 0.0 0.0 0.0 0

HP Supp. 0.0 0.0 0.0 0.0 0.0 0

Hot Water 0.0 0.0 0.0 0.0 0.0 0

Vent. Fans 28.0 26.5 25.0 30.0 27.4 56.02

Pumps & Aux. 0.0 0.0 0.0 0.0 0.0 0

Ext. Usage 0.0 0.0 0.0 0.0 0.0 0

Misc. Equip. 277.4 277.4 277.4 277.4 277.4 277.4

Task Lights 0.0 0.0 0.0 0.0 0.0 0

Area Lights 418.7 418.7 418.7 418.7 418.7 397.54

Total 981.4 1001.7 995.2 997.6 994.0 953.4

Tower 4

Electricity

MWh


Space Cool 322.8 308.8 335.4 329.7 324.2 302.4

Heat Reject. 0.0 0.0 0.0 0.0 0.0 0

Refrigeration 0.0 0.0 0.0 0.0 0.0 0

Space Heat 0.0 0.0 0.0 0.0 0.0 0

HP Supp. 0.0 0.0 0.0 0.0 0.0 0

Hot Water 0.0 0.0 0.0 0.0 0.0 0

Vent. Fans 17.0 16.2 14.6 14.1 15.5 35.2

Pumps & Aux. 0.0 0.0 0.0 0.0 0.0 0

Ext. Usage 0.0 0.0 0.0 0.0 0.0 0

Misc. Equip. 277.4 277.4 277.4 277.4 277.4 277.4

Task Lights 0.0 0.0 0.0 0.0 0.0 0

Area Lights 418.7 418.7 418.7 418.7 418.7 397.5

Total 1035.9 1021.1 1046.1 1039.9 1035.8 1012.6


17

Tower 5

Electricity

MWh

0 degrees 90 degrees 180 degrees 270 degrees Average Base Case Actual Construction

Space Cool 291.8 314.5 289.9 316.4 303.2 248.8

Heat Reject. 0.0 0.0 0.0 0.0 0.0 0

Refrigeration 0.0 0.0 0.0 0.0 0.0 0

Space Heat 0.0 0.0 0.0 0.0 0.0 0

HP Supp. 0.0 0.0 0.0 0.0 0.0 0

Hot Water 0.0 0.0 0.0 0.0 0.0 0

Vent. Fans 14.3 15.8 14.1 16.0 15.1 25

Pumps & Aux. 0.0 0.0 0.0 0.0 0.0 0

Ext. Usage 0.0 0.0 0.0 0.0 0.0 0

Misc. Equip. 411.5 411.5 411.5 411.5 411.5 411.5

Task Lights 0.0 0.0 0.0 0.0 0.0 0

Area Lights 573.0 573.0 573.0 573.0 573.0 551.6

Total 1290.5 1314.8 1288.5 1316.8 1302.7 1236.9

Tower 6

Electricity

MWh

0 degrees 90 degrees 180 degrees 270 degrees Average Base Case Proposed case

Space Cool 237.7 246.1 236.9 261.7 245.6 217.2

Heat Reject. 0.0 0.0 0.0 0.0 0.0 0.0

Refrigeration 0.0 0.0 0.0 0.0 0.0 0.0

Space Heat 0.0 0.0 0.0 0.0 0.0 0.0

HP Supp. 0.0 0.0 0.0 0.0 0.0 0.0

Hot Water 0.0 0.0 0.0 0.0 0.0 0.0

Vent. Fans 12.3 14.4 12.2 13.9 13.2 22.5

Pumps & Aux. 0.0 0.0 0.0 0.0 0.0 0.0

Ext. Usage 0.0 0.0 0.0 0.0 0.0 0.0

Misc. Equip. 271.0 271.0 271.0 271.0 271.0 271.0

Task Lights 0.0 0.0 0.0 0.0 0.0 0.0

Area Lights 391.1 391.1 391.1 391.1 391.1 374.4

Total 912.1 922.6 911.2 937.7 920.9 885.0


18

Commercial Building A

Electricity

MWh


Space Cool 3001.7 3011.7 3059.0 3076.2 3037.2 2906.4

Heat Reject. 0.0 0.0 0.0 0.0 0.0 0

Refrigeration 0.0 0.0 0.0 0.0 0.0 0

Space Heat 0.0 0.0 0.0 0.0 0.0 0

HP Supp. 0.0 0.0 0.0 0.0 0.0 0

Hot Water 0.0 0.0 0.0 0.0 0.0 0

Vent. Fans 489.8 497.0 507.4 499.8 498.5 627.2

Pumps & Aux. 0.0 0.0 0.0 0.0 0.0 0

Ext. Usage 0.0 0.0 0.0 0.0 0.0 0

Misc. Equip. 1521.1 1521.1 1521.1 1521.1 1521.1 1521.1

Task Lights 0.0 0.0 0.0 0.0 0.0 0

Area Lights 1376.5 1376.5 1376.5 1376.5 1376.5 1286.5

Total 6389.1 6406.3 6464.1 6473.6 6433.3 6341.2

Commercial Building B

Electricity

MWh

0 degrees 90 degrees 180 degrees 270 degrees Average Base Case Proposed case

Space Cool 3059.0 3076.2 3001.7 3011.7 3037.2 2868.9

Heat Reject. 0.0 0.0 0.0 0.0 0.0 0

Refrigeration 0.0 0.0 0.0 0.0 0.0 0

Space Heat 0.0 0.0 0.0 0.0 0.0 0

HP Supp. 0.0 0.0 0.0 0.0 0.0 0

Hot Water 0.0 0.0 0.0 0.0 0.0 0

Vent. Fans 507.4 499.8 489.8 497.0 498.5 583.8

Pumps & Aux. 0.0 0.0 0.0 0.0 0.0 0

Ext. Usage 0.0 0.0 0.0 0.0 0.0 0

Misc. Equip. 1521.1 1521.1 1521.1 1521.1 1521.1 1521.1

Task Lights 0.0 0.0 0.0 0.0 0.0 0

Area Lights 1376.5 1376.5 1376.5 1376.5 1376.5 1286.5

Total 6464.1 6473.6 6389.1 6406.3 6433.3 6260.3


19

Commercial Building - Retail

Electricity

MWh

0 degrees 90 degrees 180 degrees 270 degrees Average Base Case Actual construction

Space Cool 1098.6 1107.0 1097.0 1108.9 1102.9 1084.4

Heat Reject. 0.0 0.0 0.0 0.0 0.0 0

Refrigeration 0.0 0.0 0.0 0.0 0.0 0

Space Heat 0.0 0.0 0.0 0.0 0.0 0

HP Supp. 0.0 0.0 0.0 0.0 0.0 0

Hot Water 0.0 0.0 0.0 0.0 0.0 0

Vent. Fans 172.4 174.6 172.1 174.9 173.5 174

Pumps & Aux. 0.0 0.0 0.0 0.0 0.0 0

Ext. Usage 0.0 0.0 0.0 0.0 0.0 0

Misc. Equip. 443.6 443.6 443.6 443.6 443.6 443.6

Task Lights 0.0 0.0 0.0 0.0 0.0 0

Area Lights 891.8 891.8 891.8 891.8 891.8 723.5

Total 2606.5 2617.1 2604.6 2619.3 2611.9 2425.5

ANNEXURE 2 – WWR

Tower Wall Dimensions (m2)

Wall Area Window area WWR (%) Length Height

Tower T1 245.04 3.1 759.6 156.46 20.6%

Tower T2 245.04 3.1 759.6 156.46 20.6%

Tower T3 201.39 3.1 624.3 124.20 19.9%

Tower T4 201.39 3.1 624.3 124.20 19.9%

Tower T5 238.02 3.1 737.9 156.35 21.2%

Tower T6 241.37 3.1 748.2 157.82 21.1%

Commercial A 772.8 4.2 5852.9 3693.5 63.1%

Commercial B 799.03 4.2 16515.4 10960.4 66.4%

Retail 1896.17 4.2 7963.91 4566.79 57.3%

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