Green Building Perspective

7/30/2019 Green Building Perspective

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E5- E6 Civil Part-II Rev Date: 15-03-11

BSNL ,India For Internal Circulation of BSNL only Page 1

CHAPTER-10

GREEN BUILDING PERSPECTIVE


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GREEN BUILDING PERSPECTIVE

The Green building movement has gained tremendous momentum during the past 3-4

years.The concept of green buildings is not as nascent as we think it is. For example,

our own ancestors worshipped the five elements of nature - Earth as Prithvi, Water as

Jal, Agni as Energy, Air as Vayu, and Sky as Akash. Green buildings basically

seek to harness all these natural elements in its design & construction to an optimum

level so as to have an eco-friendly, low energy & low water consumption building and

at the same time providing fresh & healthy environment to its occupants. Threats of

global warming & shrinking natural resources along with rise in power consumption

has led to acceptance of need to construct all buildings as green buildings.

A green building is one which encompasses the following important features

(i) Site selection with full respect to ecology of the area & existingenvironment & use of local materials etc.

(ii) Minimum consumption of energy by the building(iii) Minimum use of fresh water from external sources(iv) Maximum use of non toxic, recycled & renewable material(v) Highest indoor air quality without affecting the energy consumption(vi) Integrated Building Management System for control & monitoring,

measurement & verification(vii) Innovation in design & construction technique.

Green buildings are given ratings by rating agencies based on their performance on

laid down standard criteria. Some of the popular rating systems are LEED, GRIHA

etc. Incorporating green design requires an integrated effort on the part of all the team

members the architect, builder, civil & horticulture engineers, consultants and the

vendors. Achieving the targeted final rating becomes easier when every member is

committed to the green design principles. As regards the cost impact in the design of a

green building, the cost could be slightly higher than a conventional building.However green buildings, on account of their design features, consume less energy

and less water vis--vis a conventional building. Thus this extra cost gets paid back in

3-5 years time.

India, being a fast developing country, is witnessing tremendous growth in

construction thus putting pressure on both energy & water resources. Therefore it is

imperative to adopt green construction to minimize impact on the environment and

natural resources. Today a variety of green building projects are coming up in the

countryresidential complexes, hospitals, educational institutions, IT parks, airports,

government buildings and offices etc.


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The benefits

On a broader scale, design & construction of green buildings will benefit the

community at large with the improvement in environment by reducing GHG

(greenhouse gas) emissions, improving energy security, and reducing the stress on

natural resources.

Green concepts and techniques in the residential sector can help address national

issues like handling of consumer waste, water efficiency, reduction in fossil fuel use

in commuting, energy efficiency and conserving natural resources. Most importantly,

these concepts can enhance occupant health, happiness and wellbeing.

Some of the benefits of a green design to a building owner, user, and the society as a

whole are as follows :

Reduced energy consumption without sacrificing the comfort levels

Reduced destruction of natural areas, habitats, and biodiversity, and reduced

soil loss from erosion, etc.

Reduced air and water pollution (with direct health benefits)

Reduced water consumption

Limited waste generation due to recycling and reuseReduced pollution loads

Increased user productivity

Enhanced image and marketability

Works Manual Provisions

CPWD has also decided that henceforth all CPWD constructions shall be Green. A

Chapter titled Green Building Norms has been introduced giving the approved

guidelines regarding Green Buildings in CPWD Works Manual.

Obtaining certificate from rating agencies for the building being certified as Green

involves third party inspections / reviews / registration etc. and will involve both cost

and time. The preliminary estimate should include extra provisions, if any to cover the

probable cost on certification both internal and by third party if it is decided to obtain

the green rating certificate.

For internal certification, CPWD has adopted GRIHA rating system of TERI. The

responsibility of internal certification indicating whether the specific criterion that

falls under their respective domain has been achieved or not lie with Senior Architect

for Architecture related criterion; Superintending Engineer (C) for Civil Engineering


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related criterion; Superintending Engineer (E) for Electrical Engineering related

criterion and Director (Horticulture) / Superintending Engineer (C) for Horticulture

related criterion. The overall internal green certification for the project shall be done

by the authority who finalizes and submits the preliminary estimate of the project.

The authority who finalised the preliminary estimate of the project shall develop

appropriate methodology of construction as well as planning of the project and shall

be responsible to include them in contract documents under a new chapter which may

be named as "Particular Specifications/Methodologies for Green Building".

The internal green building certification shall be expressed in following manner on

following documents for the purpose of maintaining the same on permanent basis

S.No. Satisfied by Standard Document where satisfaction is to be

certified

1 Senior Architect Preliminary Drawings / Working Drawings issued for

the project. A Green Parameter Table shall be provided

over the Title Block where all criteria pertaining to

Architecture should be listed and satisfaction should be

indicated. Reasons for dissatisfaction should be

explicitly mentioned wherever the criteria are not

satisfied.

2 Director (H) / Completion Certificate if the same falls under his own

SE (C/E) competency. If the Completion Certificate falls under

as the case may be the competency of the authority other than Director (H)/

SE (C/E), the said authority should obtain it from

Director (H) / SE (C/E) before recording the

Completion Certificate and mention the same in the

Completion Certificate.

A Green Parameter Table shall be provided in the

Completion Certificate where all criteria pertaining to

Civil / Electrical / Horticulture should be listed and

satisfaction should be indicated. Reasons for

dissatisfaction should be explicitly mentioned wherever

a criterion is not satisfied.

A copy of the Green Parameter Table of the respective components of the project

shall be sent to the preliminary estimate framing authority within fifteen days of its

incorporation in standard works document i.e. preliminary / working drawings in

respect of Architectural criterion and Completion Certificate in respect of Civil /Electrical / Horticultural criterion for compilation of all components and to issue a


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final certification to the client for his record. Whenever a project is executed in

packages, the internal rating shall be for (1) each package separately, and (2) project

as a whole.

EE (C/E) shall facilitate the rating agencies both internal and external (where it is

decided to have Green Rating and certification from third party agencies) by

providing documentary evidences as may be required in support thereof. No

document shall be shared with the external rating agencies directly. Communication

from the external rating agencies in respect of satisfaction / dissatisfaction of the

criterion assessed by them should be indicated in Green Parameter Table in the

Column Remarks indicating reasons for dissatisfaction if points earned are lesser

than maximum points of the Table as per form attached.

GRIHA Rating System

GRIHA (an acronym for Green Rating for Integrated Habitat Assessment) Rating

System, a tool developed by TERI (The Energy and Resources Institute) evaluates the

environmental performance of a building holistically over its entire life cycle, thereby

providing a definitive standard for what constitutes a green building. The rating

system is based on accepted energy and environmental principles, and seek to strike a

balance between the established practices and emerging concepts, both national and

international

The basic features

GRIHA rating system has been developed to help design and evaluate new buildings

(buildings that are still at the inception stages). A building is assessed based on its

predicted performance over its entire life cycle inception through operation. The

stages of the life cycle that have been identified for evaluation are the preconstruction,

building design and construction, and building operation and maintenance stages. The

issues that get addressed in these stages are as follows

Pre-construction stage (intra- and inter-site issues)

Building planning and construction stages (issues of resource conservation and

reduction in resource demand, resource utilization efficiency, resource

recovery and reuse, and provisions for occupant health and well being). The

prime resources that are considered in this section are land, water, energy, air,

and green cover.

Building operation and maintenance stage (issues of operation and

maintenance of building systems and processes, monitoring and recording of

consumption, and occupant health and well being, and also issues that affect

the global and local environment).


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Scoring points for GRIHA

GRIHA is a guiding and performance-oriented system where points are earned for

meeting the design and performance intent of the criteria. Each criterion has a number

of points assigned to it. It means that a project intending to meet the criterion would

qualify for the points. Compliances, as specified in the relevant criterion, have to be

submitted in the prescribed format. The points related to these criteria (specified

under the relevant sections) are awarded provisionally while certifying and are

converted to firm points through monitoring, validation, and documents/photographs

to support the award of point.

GRIHA has a 100 point system consisting of some core points, which are mandatory

to be met while the rest are optional points, which can be earned by complying withthe commitment of the criterion for which the point is allocated. The innovation

points are available over and above the 100 point system. This means that a project

can hypothetically apply for a maximum of 104 points. But the final scoring shall be

done out of 100 points. Different levels of certification (one star to five star) are

awarded based on the number of points earned. The minimum points required for

certification is 50. Buildings scoring 50 to 60 points, 61 to 70 points, 71 to 80 points,

and 81 to 90 points shall get one star, two stars, three stars and four stars

respectively. A building scoring 91 to 100 points will get the maximum rating viz.

five stars.

Points scored Rating

5060 One star

6170 Two stars

7180 Three stars

8190 Four stars

91100 Five stars

The details of the points as given in TERI GRIHA Rating system and Proforma

Green Parameter Table is given in Annexure-I.

A typical road map to achieve GRIHA 3-Star or 4 Star rating for new buildings is

given in Annexure-II. Also typical energy saving approaches that can be adopted in

buildings is given in Annexure-III. Some of the green features that have been

incorporated in a Platinum rated (LEED rating) residential & commercial project in

India are listed in Annexure-IV.


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ANNEXURE -I

TERIGRIHA Green Building Rating System

Synopsis of the criteria for rating

The criteria have been categorized as follows.

1 Site Selection and Site planning

1.1 Conservation and efficient utilization of resource

ObjectiveTo maximize the conservation and utilization of resources (land, water,

natural habitat, avi fauna, and energy) conservation and enhance efficiency of the

systems and operations.

Criterion 1 Site Selection

Criterion 2 Preserve and protect the landscape during construction/compensatory

depository forestation.

Commitment- Proper timing of construction, preserve top soil and existing vegetation,

staging and spill prevention and erosion and sedimentation control. Replant, on-site,

trees in the ratio 1:3 to those removed during construction.

Criterion 3 Soil conservation (till post-construction).

Commitment- Proper top soil laying and stabilization of the soil and maintenance of

adequate fertility of the soil to support vegetative growth.

Criterion 4Design to include existing site features.

Commitment- Minimize the disruption of natural ecosystem and design to harness

maximum benefits of the prevailing micro-climate.

Criterion 5Reduce hard paving on-site and /or provide shaded hard - paved surfaces.

Commitment- Minimize storm water run-off from site by reducing hard paving onsite.

Criterion 6Enhance outdoor lighting system efficiency.

Commitment- Meet minimum allowable luminous efficacy (as per lamp type) and

make progressive use of a renewable energy- based lighting system.

Criterion 7Plan utilities efficiently and optimize on-site circulation efficiency

Commitment- Minimize road and pedestrian walkway length by appropriate planning

and provide aggregate corridors for utility lines.


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1.2 Health and well being

ObjectiveTo protect the health of construction workers and prevent pollution.

Criterion 8 Provide at least, the minimum level of sanitation/safety facilities for

construction workers.

Commitment- Ensure cleanliness of workplace with regard to the disposal of waste

and effluent, provide clean drinking water and latrines and urinals as per applicable

standard.

Criterion 9Reduce air pollution during construction.

Commitment- Ensure proper screening, covering stockpiles, covering bricks and loads

of dusty materials, wheel-washing facility, and water spraying.

2 Building planning and construction stage

Conservation and efficient utilization of resources

Objective To maximize resource (water, energy, and materials) conservation and

enhance efficiency of the system and operations.

2.1 Water

Criterion 10Reduce landscape water requirement.

Commitment- Landscape using native species and reduce lawn areas while enhancing

the irrigation efficiency, reduction in water requirement for landscaping purposes.

Criterion 11Reduce building water use.

Commitment- Reduce building water use by applying low-flow fixtures, etc.

Criterion 12Efficient water use during construction.

Commitment- Use materials such as pre-mixed concrete for preventing loss during

mixing. Use recycled treated water and control the waste of curing water.


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2.2 Energy: end use

Criterion 13 Optimize building design to reduce the conventional energy demand.

Commitment- Plan appropriately to reflect climate responsiveness, adopt an adequate

comfort range, less air-conditioned areas, daylighting, avoid over-design of the

lighting and air-conditioning systems.

Criterion 14 Optimize the energy performance of the building within specified

comfort limits.

Commitment- Ensure that energy consumption in building under a specified category

is 10%40% less than that benchmarked through a simulation exercise.

2.3 Energy: embodied and construction

Criterion 15 Utilization of fly ash in the building structure.

Commitment- Use of fly ash for RCC (reinforced cement concrete) structures with

infill walls and load bearing structures, mortar, and binders.

Criterion 16Reduce volume, weight, and time of construction by adopting an efficient

technology (e.g. pre-cast systems, ready-mix concrete, etc.).

Commitment- Replace a part of the energy-intensive materials with less energy

intensive materials and/or utilize regionally available materials, which use low

energy/ energy-efficient technologies.

Criterion 17Use low-energy material in the interiors.

Commitment- Minimum 70% in each of the three categories of interiors (internal

partitions, panelling/false ceiling/interior wood finishes/ in-built furnituredoor/window frames, flooring) from low-energy materials/finishes to minimize the

usage of wood.

2.4 Energy: renewable

Criterion 18Renewable energy utilization.

Commitment- Meet energy requirements for a minimum of 10% of the internal

lighting load (for general lighting) or its equivalent from renewable energy sources


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(solar, wind, biomass, fuel cells, etc). Energy requirements will be calculated based

on realistic assumptions which will be subject to verification during appraisal.

Criterion 19Renewable energy - based hot- water system.

Commitment- Meet 70% or more of the annual energy required for heating water

through renewable energy based water-heating systems.

2.5 Recycle, recharge, and reuse of water

ObjectiveTo promote the recycle and reuse of water.

Criterion 20 Wastewater treatment

Commitment- Provide necessary treatment of water for achieving the desired

concentration of effluents.

Criterion 21 Water recycle and reuse (including rainwater).

Commitment- Provide wastewater treatment on-site for achieving prescribed

concentration, rainwater harvesting, reuse of treated waste water and rainwater for

meeting the buildings water and irrigation demand.

2.6 Waste management

ObjectiveTo minimize waste generation, streamline waste segregation, storage, and

disposal, and promote resource recovery from waste.

Criterion 22Reduction in waste during construction.

Commitment- Ensure maximum resource recovery and safe disposal of wastes

generated during construction and reduce the burden on landfill.

Criterion 23Efficient waste segregation.

Commitment- Use different coloured bins for collecting different categories of waste

from the building.

Criterion 24 Storage and disposal of waste.

Commitment- Allocate separate space for the collected waste before transferring it to

the recycling/disposal stations.


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Criterion 25Resource recovery from waste.

Commitment- Employ resource recovery systems for biodegradable waste as per the

Solid Waste Management and handling Rules, 2000 of the MoEF. Make arrangementsfor recycling of waste through local dealers.

2.7 Health and well-being

ObjectiveTo ensure healthy indoor air quality, water quality, and noise levels, and

reduce the global warming potential.

Criterion 26 Use of low-VOC (volatile organic compounds) paints/ adhesives /

sealants.

Commitment- Use only low VOC paints in the interior of the building. Use water

based rather than solvent based sealants and adhesives.

Criterion 27Minimize ozonedepleting substances

Commitment- Employ 100% zero ODP (ozone depletion potential) insulation; HCFC

(hydro-chlorofluorocarbon)/ and CFC (chlorofluorocarbon) free HVAC and

refrigeration equipments and/Halon-free fire suppression and fire extinguishing

systems.

Criterion 28 Ensure water quality.

Commitment- Ensure groundwater and municipal water meet the water quality norms

as prescribed in the Indian Standards for various applications (Indian Standards for

drinking [IS 10500-1991], irrigation applications [IS 11624-1986]. In case the water

quality cannot be ensured, provide necessary treatment of raw water for achieving the

desired concentration for various applications.

Criterion 29Acceptable outdoor and indoor noise levels.

Commitment- Ensure outdoor noise level conforms to the Central Pollution Control

BoardEnvironmental StandardsNoise (ambient standards) and indoor noise level

conforms to the National Building Code of India, 2005, Bureau of Indian Standards,

Part 8Building Services; Section 4Acoustics, sound insulation, and noise control.

Criterion 30 Tobacco and smoke control.

Commitment- Zero exposure to tobacco smoke for non-smokers and exclusive

ventilation for smoking rooms.


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Criterion 31 Provide the minimum level of accessibility for persons with disabilities.

Commitment- To ensure accessibility and usability of the building and its facilities by

employees, visitors, and clients with disabilities.

3 Building operation and maintenance

Objective Validate and maintain green performance levels/adopt and propagate

green practices and concepts.

Criterion 32Energy audit and validation.

Commitment- Energy audit report to be prepared by approved auditors of the Bureau

of Energy Efficiency, Government of India.

Criterion33Building operation and maintenance.

Commitment- Validate and maintain 'green' performance levels/adopt and propogate

green practices and concepts. Ensure the inclusion of a specific clause in the contract

document for the commissioning of all electrical and mechanical systems to be

maintained by the owner, supplier, or operator. Provide a core facility/service

management group, if applicable, which will be responsible for the operation and

maintenance of the building and the electrical and mechanical systems after the

commissioning. Owner/builder/occupants/service or facility management group to

prepare a fully documented operations and maintenance manual, CD, multimedia or

an information brochure listing the best practices/dos and donts/maintenance

requirements for the building and the electrical and mechanical systems along with

the names and addresses of the manufacturers/suppliers of the respective system.

Criterion 34Innovation points.

Commitment- Four innovation points are available under the rating system for

adopting criteria which enhance the green intent of a project, and the applicant can

apply for the bonus points. Some of the probable points, not restricted to the ones

enumerated below, could be

1. Alternative transportation

2. Environmental education

3. Company policy on green supply chain

4. Lifecycle cost analysis

5. Enhanced accessibility for physically/mentally challenged.

6. Any other criteria proposed by the client.


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Evaluation procedure

List of criteria Points Remarks Unit of

responsible for

the criterionCriteria 1: Site Selection 1 Partly mandatory Architecture

Criteria 2: Preserve and protect

landscape during

construction/compensatory depository

forestation

5 Partly mandatory 3 by Architecture,

2 by Horticulture

Criteria 3: Soil conservation (post

construction)4 Civil

Criteria 4: Design to include existing site

features2 Mandatory Architecture

Criteria 5: Reduce hard paving on site 2 Partly mandatory Architecture

Criteria 6: Enhance outdoor lightingsystem efficiency

3 Electrical

Criteria 7: Plan utilities efficiently and

optimize on site circulation

efficiency

3 Architecture

Criteria 8: Provide, at least, minimum

level of sanitation/safety facilities for

construction workers

2 Mandatory Civil

Criteria 9: Reduce air pollution during

construction

2 Mandatory Civil

Criteria 10: Reduce landscape water

requirement3 Horticulture

Criteria 11: Reduce building water use 2 Civil

Criteria 12: Efficient water use during

construction1 Civil

Criteria 13: Optimize building design to

reduce conventional energy

demand

6 Mandatory Architecture

Criteria 14: Optimize energy

performance of building within

specified comfort

12 Electrical

Criteria 15: Utilization of flyash in

building structure

6 Civil

Criteria 16: Reduce volume, weight and

time of construction by adopting

efficient technology (e.g. pre-cast

systems, ready-mix concrete, etc.)

4 Civil

Criteria 17: Use low-energy material in

interiors4 Architecture

Criteria 18: Renewable energy

utilization5 Electrical


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Criteria 19: Renewable energy based

hot-water system3 Electrical

Criteria 20: Waste water treatment 2 CivilCriteria 21: Water recycle and reuse

(including rainwater)5 Civil

Criteria 22: Reduction in waste during

construction2 Civil

Criteria 23: Efficient waste segregation 2 Civil

Criteria 24: Storage and disposal of

waste2 Civil

Criteria 25: Resource recovery fromwaste

2 Civil

Criteria 26: Use of low - VOC paints/

adhesives/ sealants.4 Civil

Criteria 27: Minimize ozone depleting

substances3 Mandatory Electrical

Criteria 28: Ensure water quality 2 Mandatory Civil

Criteria 29: Acceptable outdoor and

indoor noise levels2 Architecture

Criteria 30: Tobacco and smoke control 1 Architecture

Criteria 31: Universal Accessibility1

Architecture

Criteria 32: Energy audit and validation Mandatory Electrical

Criteria 33: Operations and maintenance

protocol for electrical and mechanical

equipment

2 Mandatory Electrical

Total Score 100 Architecture,

Civil, Electrical,

Horticulture

Criteria 34: Innovation (Beyond 100) 4 Architecture,

Civil, Electrical,Horticulture

Total score 104


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GREEN PARAMETER TABLE

PACKAGE

PROJECT

Nomenclature of

criteria

Maximum

Points

Points

earned

Remarks indicating reasons for

dissatisfaction if points earned are

lesser than maximum points

Criteria 1

Criteria 2

.

Criteria 34

Total score 104


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ANNEXURE-II

Road Map to achieve GRIHA 3-Star or 4 Star rating for new buildings

A list of various actions is suggested below as a possible strategy to achieve a

minimum of 3 star rating. Suggestions in brackets followed by a * shall enhance the

score further and enable a 4 star rating. The set of actions suggested are however only

a pointer in the direction of achieving a high star rating but not as a comprehensive

and exhaustive checklist for achieving a high rating.

Site Planning

Select appropriate site as per GRIHA guidelines

Ensure sedimentation /erosion control/save trees (If they exist) / plant more

trees by appropriate planning of the construction work.

Design the building as per site conditions

Control Air pollution at all stages of construction

Ensure safety and health of construction workers

Control hard paving/run off/manage utilities efficiently

Use energy efficient outdoor lighting (use Renewable Energy e.g. Solar based

lighting)*

Use native trees and shrubs for landscaping to reduce landscape water demand

over GRIHA benchmark by 40% (reduce by 50%)*

Energy/ Water/ Waste

Reduce 25% water demand over GRIHA benchmarks (developed based on

National Building Code) (by 50%)*

Save water in construction

Comply with the mandatory requirements within the ECBC (Energy

Conservation Building Code)

Meet prescriptive shading norms of ECBC, provide daylight, avoid over

design of artificial lighting

Reduce energy performance index over GRIHA benchmark by 10% (by

30%)*

Provide 1% equivalent connected load of lighting and HVAC through

Renewable Energy power (meet 10% lighting consumption through

Renewable Energy e.g. Solar based power)*

Use fly ash based products in minimum two of the following three areas:

(structure/ walling / finishing)

Recycle wastewater and reuse 25% of treated wastewater (IF wastewater

quantity is higher than 10kLday)

Segregate and store waste appropriately


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Indoor environmental quality

Minimize the usage of Ozone depleting products in the building structure and

systems.

Use low VOC (Volatile Organic Compound) paints

Ensure compliance of water quality with relevant BIS standards

Restrict Smoking in the building

Provide Universal accessibility


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ANNEXURE-III

Typical Energy Saving Approach in Buildings:

Orientation:This is the first step to achieve energy efficiency, following measures can be adopted:

Minimize exposure on the south and west

Use simulation tools and techniques which can help in designing the

orientation to minimize heat ingress and enhance energy efficiency

Building EnvelopeSelect high performance glazing with low U-value, low Shading Coefficient

and high VLT (Visual Light Transmittance).Insulate the wall. The options for insulation materials can be Extruded

polystyrene, Expanded polystyrene (thermocol), Glass wool etc.,

Brick wall with air cavity can also significantly reduce the heat ingress.

Hollow blocks, Fly ash bricks and Autoclaved Aerated Concrete (AAC)

Blocks are also good insulators.

The heat ingress through the roof can be as high as 12-15%. Insulating the

roof can substantially reduce the heat ingress.

Consider shading devices for window openings.

Equipment & systemsSelect chillers with high Coefficient of Performance (CoP).

Install Variable Frequency Drives (VFD) for supply & return air fans and

pumps.

Select high efficiency cooling towers.

Use high efficiency motors, transformers and pumps.

Install Heat recovery wheels and economizers

Consider night purging with ambient air to flush out the heat trapped within

the building during the day

Adopt Controls & Building Management Systems for effective control

Engage a Commissioning Authority to ensure that savings are realized once

the building becomes operational

Lighting:Design in such a way that the building gets maximum day lighting.

Overall lighting power density can be designed as less as 1.0 W/sq.ft.

Use daylight-cum-dimmer controls

Install occupancy sensors

Select energy efficient luminaires like CFL, T-5, LED, etc.,


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ANNEXURE-IV

Some of the Green features incorporated in a Platinum rated (LEED rating)

residential project are

Energy Saving Features:

The building envelope is insulated with the use of fly ash blocks for walls,

under deck roof insulation and double glazed low-E glass with low U and

SHGC values for all air conditioned areas

High efficiency HVAC equipment with heat recovery wheel has been

provided

Bureau of Energy Efficiency (BEE) Star rated lamps and motion sensors for

lighting have also been provided3.84 kWp Hybrid Solar PV system which generates 10 kWh / day and Solar

Water Heater of 300 LPD (Litres Per Day) capacity has been installed

Day Lighting:

Sufficient windows and skylight areas have been provided to achieve the

daylight factor of 2% for 80% of the regularly occupied spaces

Light pipes have been used to achieve daylight in the basement areas

Water Saving Features:A sewage treatment plant of 5,000 liters/day capacity to treat all grey water

generated within the site has been provided. The treated grey water is reused

for flushing and landscaping

Low flow water fixtures (showers, faucets and flush systems) have been

provided

Materials:

Bamboo, which is a rapidly renewable material has been extensively used in

the flooring

Wood salvaged from old buildings has been used for doors and windows


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Salient Green features incorporated in one Platinum rated (LEED rating)

commercial building project in India Office space with a built-up area of

37,362 sq.ft (3,470 sq.mtrs) are

The whole building is 100% solar air-conditioned through the Vapour

Absorption System

In-situ wind turbine of 5 kW capacity

Rs 40 lakhs worth of old furniture was re-processed & re-used in the building

70% of energy savings over ASHRAE 90.1-2004 standard

Zero water discharge site

More than 75% of the spaces with good daylight

Documents

Green Building Perspective