IGBC Green Homes

®

IGBC Green Homes

IGBC Green Homes

Rating System

-Abridged Version-

20 June 2008

Confederation of Indian Industry CII-Sohrabji Godrej Green Business Centre

REFERENCE GUIDE

Abridged Version 1.0

20 JUNE 2008


IGBC Green Homes®

Copyright

Copyright © 2008 by the Indian Green Building Council. All rights reserved.

The Indian Green Building Council (IGBC) authorises you to view the IGBC Green Homes Version 1.0 Abridged Reference Guide for your individual use. In exchange for this authorization, you agree to retain all copyright and other proprietary notices contained in the original IGBC Green Homes Reference Guide. You also agree not to sell or modify the IGBC Green Homes Reference Guide or to reproduce, display or distribute IGBC Green Homes Reference Guide in any way for any public or commercial purpose, including display on a website or in a networked environment. Unauthorised use of the IGBC Green Homes Abridged Reference Guide violates copyright, trademark and other laws and is prohibited.

Note that the text of the central and local codes, regulations, voluntary standards, etc., reproduced in the IGBC Green Homes Reference Guide is either used under license to the Indian Green Building Council or, in some instances, is in the public domain. All other text, graphics, layout and other elements of content contained in the IGBC Green Homes Reference Guide are owned by the Indian Green Building Council and are protected by copyright under both Indian and foreign laws.

Disclaimer

None of the parties involved in the funding or creation of the IGBC Green Homes Version 1.0 Abridged Reference Guide, including the Indian Green Building Council, its members, its contrac-tors or the Indian government make any warranty (express or implied) or assume any liability or responsibility, to you or any third parties for the accuracy, completeness or use of, or reliance on, any information contained in the IGBC Green Homes Reference Guide, or for any injuries, losses or damages (including, without limitation, equitable relief) arising out of such use or reliance.

As a condition of use, you covenant not to sue and agree to waive and release the IGBC, its members, its contractors and the Indian government from any and all claims, demands and causes of action for any injuries, losses or damages (including, without limitation, equitable relief) that you may now or hereafter have a right to assert against such parties as a result of your use of, or reliance on, IGBC Green Homes v1.0 Reference Guide.

Indian Green Building Council C/o Confederation of Indian Industry CII – Sohrabji Godrej Green Business Centre Survey No. 64, Kothaguda Post Near Kothaguda Cross Roads, R R Dist Hyderabad – 500 032

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Acknowledgements

The IGBC Green Homes Abridged Reference Guide has been made possible through the efforts of

many dedicated volunteers, staff members and others in the IGBC community. The Reference

Guide was developed by the IGBC Green Homes Core Committee and many other members. We

extend our deepest gratitude to all these members. Tremendous inputs also came in at the ‘IGBC

Green Homes’ launch on 02 May 2008, which had an overwhelming response from stakeholders all

over the country. IGBC places on record its sincere thanks to the participating companies and

individuals who enthusiastically volunteered during the break-out sessions.

Our special thanks to the following organisations for their untiring efforts in contributing on the

technical aspects and also going through all the draft versions & the final version of the rating

programme:

¶ Ankoor Sanghvi Architects, Rajkot ¶ Architecture Autonomous, Goa ¶ Auroville Design Consultants, Pondycherry ¶ Biodiversity Conservation [India] Limited, Bangalore ¶ Brigade Group, Bangalore ¶ C R Narayana Rao Architects & Engineers, Chennai ¶ Godrej & Boyce Mfg. Co. Ltd., Mumbai ¶ International Institute of Information Technology, Hyderabad ¶ Karnataka Police Housing Corporation, Bangalore ¶ Larsen & Toubro Ltd., Chennai ¶ Malaviya National Institute of Technology, Jaipur ¶ Mistry Architects, Bangalore ¶ Spectral Services Consultants Private Limited, Noida

Our sincere thanks are due to the following orgainsations for their participation in the programme:

¶ Adapt Technologies & Consultancy Services India Pvt Ltd. ¶ Lodha Group of Companies

¶ ADC KRONE ¶ Mahindra Lifespace Developers Ltd ¶ Advance Cooling Towers Pvt Ltd. ¶ Maithel & Associates Architects Pvt. Ltd. ¶ Ala Inc ¶ Manasaram Architects ¶ Altimateasia ¶ Master Consultancy & Productivity Pvt Ltd. ¶ aluplast India Pvt. Ltd. ¶ Maxvel Technologies Pvt Ltd ¶ Ankoor Sanghvi Architects ¶ Maytas Properties Ltd. ¶ Architecture Autonomous ¶ Mistry Architects

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¶ Armstrong World Ind. India Pvt Ltd. ¶ Nippon Paint (India) Pvt Ltd. ¶ Asahi India Glass Limited (AIS) ¶ Oceanus Infrastructure (P) Ltd. ¶ Auroville Design Consultants ¶ Orbit Group ¶ Bamboo Finance ¶ Owens Corning Enterprise (India) Pvt Ltd. ¶ Biodiversity Conservation [India] Limited

¶ Parsvnath Developers Ltd. ¶ Potential Service Consultants (P) Ltd.

¶ Blue Run Ventures ¶ Prasad Escendo Consultancy ¶ Buhari Holdings Private Limited ¶ Rajarathnam Constructions (P) Ltd. ¶ Bureau of Energy of Efficiency ¶ Rajco Metal Industries Pvt Ltd. ¶ Carrier Airconditioning & Refrigeration

Limited ¶ RITES Ltd. ¶ CEPT University ¶ Roads and Buildings Dept.,Goap ¶ CSR Estates Ltd. ¶ S V Properties ¶ DLF Services Limited ¶ S&S Constructions (India) Pvt. Ltd. ¶ DLF Utilities Pvt Ltd. ¶ Sai Construction Corporation ¶ Dow Chemical International Pvt Ltd ¶ Saint - Gobain Glass India Ltd. ¶ Dynacraft Air Controls ¶ Sangam Project Consultants

¶ EMAAR Mfg Land Limited ¶ SatyaVani Projects and Consultants Pvt.

Ltd.¶ EN3 Consulting ¶ Schneider Electric India Pvt. Ltd. ¶ Energy Conservation Mission ¶ Sequoia Capital India Advisors Pvt. Ltd. ¶ Everest Industries Ltd ¶ Sevcon (India) Pvt Ltd. ¶ Eximcorp India Pvt Ltd ¶ SEW Constructions Ltd. ¶ Federation of Engineering Institutions of

South and Central Asia (FEISCA) ¶ Shapoorji Pallonji & Company Limited ¶ Forbo Flooring India ¶ Shilpa Architects ¶ Gherzi Eastern Limited ¶ Shree Ram Urban Infrastructure Ltd. ¶ Ghosh, Bose & Associates ¶ Spectral Services Consultants Private Ltd.

¶ GMR Hyderabad Intl. Ltd ¶ Srinivasa Shipping & Property

Development Ltd ¶ Godrej & Boyce Mfg. Co. Ltd. ¶ Studio Decode ¶ Godrej Properties ¶ Suchirindia Developers Pvt Ltd. ¶ Greentech Knpwledge Solutions (P) Ltd ¶ Sugan Automatics Pvt. Ltd. ¶ Hindustan Aeronautics Ltd. ¶ Sugan Automatics Pvt. Ltd. ¶ Honeywell ¶ Supreme Petrochem Ltd. ¶ Design and Development ¶ Tameer Consulting Associates ¶ Indu Projects Limited ¶ Tata Housing Development Co. Ltd. ¶ Infinity Infotech Parks Ltd. ¶ Team Labs & Consultants ¶ Infinity Township Pvt. Ltd. ¶ Terra Verde Architects

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¶ Infosys BPO Limited ¶ The Indian Institute of Architects

¶ JDS Architects ¶ Total Environment (Shibanee & Kamal

Architects)¶ Johnson Controls ¶ TSI Ventures ¶ Jones Lang LaSalle Meghraj ¶ U P Twiga Fiberglass Ltd. ¶ K Raheja Corp ¶ UNUS Architects and Interior Designers ¶ Kalpataru Ltd. ¶ USAID ¶ Khivraj Tech Park Pvt Ltd ¶ Vida Calma Homes Private Limited ¶ KRG Rainwater Foundation ¶ Voltas Limited ¶ L&T Infocity Limited ¶ V Raheja Design Construction ¶ Larsen & Toubro Limited

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Table of Contents IGBC Green Homes

Foreword from Indian Green Building Council 7

Introduction 9

Benefits of Green Homes 10 National Priorities addressed in the Rating system 10IGBC Green Home Rating System 11 IGBC Green Home Overview and Process 12 Fees 16 Updates & Addenda 16 Project Checklists 17

Site Efficiency

Mandatory Requirement 1 Adherence to Local Regulations 22 Mandatory Requirement 2 Prevention of Soil Erosion 23 SE Credit 1.0 Access to Household Amenities in the

Neighbourhood 24

SE Credit 2.0 Retain Natural Topography or Landscape 26 SE Credit 3.0 Heat Island Effect: Roof 27 SE Credit 4.0 Parking Capacity 28 SE Credit 5.0 Alternate Fuelling Facility for Vehicles 29 SE Credit 6.0 Provision for Physically Challenged 30 SE Credit 7.0 Home User Guide 31

Water Efficiency Mandatory Requirement 1 Rainwater Harvesting 33 Mandatory Requirement 2 Indoor Water Usage 34 WE Credit 1.0 Turf Design to Reduce Water Consumption 35 WE Credit 2.0 Drought Tolerant Species 36 WE Credit 3.0 Management of Irrigation System 37 WE Credit 4.0 Rainwater Harvesting 38 WE Credit 5.0 Onsite Grey Water Treatment 39 WE Credit 6.0 Grey Water Reuse 40 WE Credit 7.0 Segregation of Plumbing Line for Flushing 41 WE Credit 8.0 Indoor Water Usage – Fixtures 42 Energy Efficiency

Mandatory Requirement 1 CFC Reduction in HVAC Equipment 44 EE Credit 1.0 Maximise Energy Performance 45 EE Credit 2.0 Building Performance Audit 53 EE Credit 3.0 Refrigerators 54 EE Credit 4.0 Solar Water Heater 55 EE Credit 5.0 Captive power Generation 56 EE Credit 6.0 Onsite Renewable Energy 57

®

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EE Credit 7.1 Lighting – Internal 58 EE Credit 7.2 Lighting – External 59 EE Credit 8.0 Home Automation System 60 EE Credit 9.0 Energy Saving Measures in other Equipment 61 Material & Resources Mandatory Requirement 1 Separation of Wastes 63 MR Credit 1.0 Waste Reduction, During Construction 64 MR Credit 2.0 Solid Waste Management, Post Occupancy 65 MR Credit 3.0 Materials with Recycled Content 66 MR Credit 4.0 Rapidly Renewable Materials 67 MR Credit 5.0 Regional Materials 68 MR Credit 6.0 Material Reuse 69 MR Credit 7.0 Wood Based Building Materials and Furniture 70 Indoor Air Quality Mandatory Requirement 1-Option A

Fresh Air Ventilation-Centrally Air Conditioned Systems

72

Mandatory Requirement 1-Option B

Fresh Air Ventilation-Non Air Conditioned Homes 74

Mandatory Requirement 2 Tobacco Smoke Control 75 Mandatory Requirement 3 Day Light for 50% Spaces 76 IAQ Credit 1.0 Exhaust Systems 78 IAQ Credit 2.0-Option A Improved Fresh Air Ventilation for Air Conditioned

Homes 79

IAQ Credit 2.0-Option B

Improved Fresh Air Ventilation for Non-Air Conditioned Homes

80

IAQ Credit 3.0 Low VOC Materials 81 IAQ Credit 4.0 Carpets 83 IAQ Credit 5.0 Building Flush Out 84 IAQ Credit 6.0 Day Light : Day Light for 75%/ 95% of Spaces 85 IAQ Credit 7.0 Design to Enhance Cross Ventilation 87 Innovation in Design

ID Credit 1.1 Innovation in Design 89 ID Credit 1.2 Innovation in Design 89 ID Credit 1.3 Innovation in Design 89 ID Credit 2.0 IGBC AP 90

Abbreviations 91 References 93

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Foreword from the IGBC

The built environment has a profound impact on our natural environment, economy, health

and productivity. Breakthroughs in building science, technology and operations are now

available to designers, builders, operators and owners who want to build green and maximize

both economic and environmental performance.

The Indian Green Building Council (IGBC) is coordinating the establishment and evolution

of a national consensus effort to provide the industry with tools necessary to design, build and

operate buildings that deliver high performance inside and out. The Council members work

together to develop industry standards, design & construction practices & guidelines,

operation and maintenance practices & guidelines, policy positions & educational tools that

support the adoption of sustainable design and building practices. Members also forge

strategic alliances with key industry and research organizations, Central government agencies

and state & local governments to transform the built environment. As the leading

organization that represents the entire building industry on environmental building matters,

the Council’s unique perspective and collective power provides our members with enormous

opportunity to affect change in the way buildings are designed, built, operated and

maintained.

IGBC Membership

The council’s greatest strength is the diversity of our membership. The IGBC is a consensus

based not-for-profit organization representing the entire Indian building industry. Since its

inception in 2001, the IGBC has played a vital role in providing a leadership forum and a

unique, integrating force for the building industry. The Council programmes are:

× Committee – Based

The heart of this effective coalition is our committee structure in which volunteer

members design strategies that are implemented by IGBC staff and expert consultants.

Our committees provide a forum for members to resolve differences, build alliances and

forge cooperative solutions for influencing change in all sectors of the building industry

× Member – Driven

The council’s membership is open, balanced and provides a comprehensive platform for

carrying out important programmes and activities. We target the issues identified by our

members as the highest priority. We conduct an annual review of achievements that

allows us to set policy, revise strategies and devise work plans based on members’ needs

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× Consensus – Focused

We work together to promote green buildings and in doing so, we help foster greater

economic vitality and environmental health at lower costs. The various industry segments

bridge ideological gaps to develop balanced policies that benefit the entire industry.

Contact :

Indian Green Building Council C/o Confederation of Indian Industry CII – Sohrabji Godrej Green Business Centre Survey No. 64, Kothaguda Post Near Kothaguda Cross Roads, R R District Hyderabad – 500 032

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I. Introduction

The housing sector in India is growing at a rapid pace and contributing immensely to the

growth of the economy. This augurs well for the country and now there is an imminent

need to introduce green concepts and techniques in this sector, which can aid growth in a

sustainable manner.

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.

Against this background, the Indian Green Building Council (IGBC) has launched the

‘IGBC Green Homes Rating System’ to address the National priorities. By applying IGBC

Green Homes criteria, homes which are sustainable over the life cycle of the building can

be constructed. This rating programme is a tool which enables the designer to apply green

concepts and criteria, so as to reduce the environmental impacts, which are measurable.

The programme covers methodologies to cover diverse climatic zones and changing

lifestyles

IGBC Green Homes is the first rating programme developed in India, exclusively for the

residential sector. It is based on accepted energy and environmental principles and strikes a

balance between known established practices and emerging concepts. The system is

designed to be comprehensive in scope, yet simple in operation.

The IGBC set up the IGBC Green Homes Core Committee to develop the rating

programme. This committee comprised of key stakeholders including architects,

developers, home owners, manufacturers, institutions and industry representatives. The

committee, with a diverse background and knowledge has enriched the rating system both

in its content and process.

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II. Benefits of Green Homes

A Green Home can have tremendous benefits, both tangible and intangible. The immediate

and most tangible benefit is in the reduction in water and operating energy costs right from

day one, during the entire life cycle of the building. The energy savings could range from

20 – 30 % and water savings is around 30 – 50%. Green Homes Rating tool can also

enhance marketability for the project. Intangible benefits of Green Buildings include

enhanced air quality, excellent day lighting, health & wellbeing of the occupants, safety

benefits and conservation of scarce National resources.

III. National Priorities Addressed in the Rating System

The Green Homes Rating System addresses the most important National priorities which

include water conservation, handling of consumer wastes, energy conservation,

conservation of resources like wood and lesser dependence on usage of virgin materials.

Water Efficiency:

Most of the Asian countries are water stressed and in countries like India the water table

has reduced drastically over the last decade. Green Homes encourages use of water in a

self sustainable manner through reducing, recycling and reusing strategies. By adopting

this rating programme green homes can save potable water to an extent of 30 – 40%.

Handling of Consumer Waste:

Handling of wastes in residential buildings is extremely difficult to handle as most of the

waste generated is not segregated at the time of disposal and has a high probability of

going to land fills. This would be a challenge to the municipalities which needs to be

addressed. The IGBC Green Homes rating programme encourages waste management

through segregation, storage and effective disposal.

Energy Efficiency:

The residential sector is a large consumer of electrical energy. IGBC Green Homes can

reduce energy consumption through energy efficient lighting, air conditioning systems,

motors, pumps etc., The rating system encourages green homes which select and use the

BEE labeled equipment and appliances. The energy savings that can be realized by

adopting this rating programme can be to the tune of 25 to 30%.

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Reduced Use of Fossil Fuels:

Fossil fuel is a slowly depleting resource, world over. The use of fossil fuel for

transportation has been a major source of pollution. The rating system encourages the use

of alternate fuels for transportation and captive power generation.

Reduced Dependency on Virgin Materials:

The rating system encourages projects to use recycled & reused material and discourages

the use of virgin wood thereby addressing environmental impacts associated with

extraction and processing of virgin materials. Reduced usage of virgin wood is also

encouraged

Health and Well-being of Occupants:

Health and well-being of occupants is the most important aspect of Green Homes. The

IGBC Green Homes rating system ensures minimum performance on day lighting and

ventilation aspects which are critical in a home. The rating system recognises measures to

minimise the indoor air pollutants.

IV. IGBC Green Homes Rating System

The IGBC set up the IGBC Green Homes Core Committee to focus on residential sector.

The composition of the committee included architects, realtors, building owners and

industry representatives. This cross section of people and professions added a richness

and depth both to the process and to the ultimate product.

A. Features of IGBC Green Homes

The IGBC Green Homes Green Building Rating System is a voluntary, consensus –

based, market-driven building rating system based on existing proven technology.

The rating system evaluates certain credit points using a prescriptive approach

and other credits on a performance based approach.

B. Scope of IGBC Green Homes

IGBC Green Homes is a measurement system designed for rating new residential

buildings which include construction categories such as

× Individual homes

× Gated communities and

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× High rise residential apartments.

× Existing residential buildings who retrofit and meet the mandatory

requirements and the minimum number of credit points

It is based on accepted energy and environmental principles and strikes a balance

between known established practices and emerging concepts.

Different levels of green building certification are awarded based on the total credits

earned. The system is designed to be comprehensive in scope, yet simple in

operation.

C. The Future of IGBC Green Homes

The green design field is growing and changing daily. New technologies and

products are coming into the marketplace and innovative designs are proving their

effectiveness. Therefore, the Rating System and the Reference Guide will evolve as

well. Teams wishing to certify under IGBC Green Homes should note that they will

need to comply with the version of the rating system that is current at the time of

their registration.

The IGBC will highlight new developments on its website on a continuous basis at

www.igbc.in

V. IGBC Green Homes Overview and Process

The IGBC Green Homes Green Building Rating System provides a set of performance

standards for certifying the design and construction phases of residential buildings. The

specific credits in the rating system provide guidelines for the design and construction of

residential buildings of all sizes and types. The intent of IGBC Green Homes is to assist

in the creation of high performance, healthy, durable, affordable and environmentally

sound residential buildings.

IGBC Green Homes addresses:

× Site Efficiency

× Water Efficiency

× Energy Efficiency

× Materials & Resources

× Indoor Air Quality

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× An additional category, Innovation & Design Process, addresses sustainable

building expertise as well as design measures not covered under the five

environmental categories.

Different levels of green building certification are awarded based on the total credits

earned. However every Green Home should meet certain mandatory requirements, which

are non-negotiable.

The various levels of rating awarded are:

× ‘Platinum’ to recognise Global leadership

× ‘Gold’ to recognise National Excellence

× ‘Silver’ to recognise Outstanding Performance

× ‘Certified’ to recognise Best Practices

A. When to use IGBC Green Homes

IGBC Green Homes is designed primarily for new residential buildings. All

residential buildings are eligible for certification as an IGBC Green Homes Building.

IGBC encourages the project team to tally a potential point total using the Rating

System checklists for all possibilities. The project is a viable candidate for IGBC

certification if it can meet all mandatory requirements and achieve the minimum

points required in a given Rating System.

B. IGBC Green Homes Registration

Project teams interested in obtaining IGBC Green Homes Certification for their

project must first register this intent with the IGBC. Projects can be registered on the

IGBC website (www.igbc.in) under ‘Register Your Project’. The website includes

information on registration costs for IGBC member companies as well as non-

members. Registration is an important step that establishes contact with the IGBC

and provides access to software tools, errata, critical communications and other

essential information.

Consult the Web site for important details about applying the IGBC Green Homes

application as well as the certification review process, schedule and fee.

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C. IGBC Green Homes Certification Levels

The rating system caters to both individual homes and multi-dwelling units. By and

large, the context for both the types are similar; however the applicability of few of

the green homes features may vary for each of these types of dwelling units. Hence

the certification level threshold criteria are different for these types:

For Individual Homes For Multi-dwelling Units

For more information, visit the IGBC Green Homes Web page on www.igbc.in

D. IGBC Green Homes Process

Once a project is interested in going green, the project must be registered under the

IGBC Green Homes Rating System. The project design must incorporate the

requirements of the rating system. The team begins to collect information and

perform calculations to satisfy the mandatory requirement and credit compliance

options. The project team will be expected to provide supporting documents for a

portion of the mandatory requirements and credits. Supporting documents are those

which provide specific proof of meeting the required performance level – such as

calculations, specifications, drawings, cutsheets, manufacturer’s literature, purchase

invoices and other source documents. Many of these items are implicitly described in

the Abridged Reference Guide’s instructions.

Documentation is submitted in two phases – Design submittals and construction

submittals. After the Design submission, the review is done by third party assessors

and review comments would be provided after 30 days. The next phase involves

submission of clarifications to design queries and construction document submittal.

The final review will also take 30 days, after which the rating is awarded. It is

helpful to designate a team leader who is responsible for managing the compilation

Certification Level Points

Certified 32 – 39

Silver 40 – 47

Gold 48 – 55

Platinum 56 – 80

Certification Level Points

Certified 30 – 37

Silver 38 – 44

Gold 45 – 52

Platinum 53 – 75

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of this information by project team.

The IGBC will recognize buildings that achieve one of the rating levels with a

formal letter of certification and a mountable plaque.

Projects by developers can register for Precertification.

E. Precertification

Precertification is formal recognition by IGBC for projects aspiring for IGBC Green

Homes Rating. Precertification is granted to projects on review of the early design

stage documentation. This documentation, which reflects a realistic set of project

goals and intentions, forms the basis for an award of Precertification. Precertification

is not a confirmation of, or a commitment to achieve IGBC Green Homes rating.

Precertification provides the owner/developer a unique advantage to market the

space to potential tenants and financiers.

Once a project is registered as an IGBC Green Homes project, the project team may

submit the documentation for Precertification. The project documentation is

reviewed and an IGBC Green Homes Precertification level (certified, silver, gold or

platinum) is granted. A certificate and letter are provided to the project.

The review will allow the developer to market the project's intention to achieve the

IGBC Green Homes rating. This Precertification process is not intended to be a

supplementary submittal for award of final rating.

IGBC Green Homes certification review will still occur with IGBC's established

two-phase review (Design & Construction). Because of the many factors inherent in

project design and implementation, it is possible that the final certification review

will not correspond exactly to the Precertification review.

To complete IGBC Green Homes Precertification, the following information must be

submitted:

× IGBC Green Homes project information including:

¶ Project name and registration number ¶ Project contact ¶ Project size (sq.ft) ¶ Estimated time of construction completion ¶ Brief narratives for each of the mandatory requirements and credits

covering the goal, compliance option along with supporting documents

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× Supporting documents which clearly detail the intent to meet the compliance options may be submitted. These may include any or all the following:

¶ Site plans ¶ Plans and Elevations ¶ Conceptual / Schematic drawings ¶ Calculations

VI. Fee

Certification fee information can be found IGBC website. The IGBC will

acknowledge receipt of your application and proceed with review when all project

documentation has been submitted.

VII. Updates & Addenda

This is the first edition of the IGBC Green Homes Abridged Reference Guide. As

IGBC Green Homes continues to improve and evolve, updates and addenda will be

made available to substitute and augment the current material. Updates and addenda

will be formally incorporated in major revisions. In the interim between major

revisions, the IGBC may use its consensus process to clarify criteria.

When a project registers for certification, the mandatory requirements, credits and

credit rulings current at the time of project registration will continue to guide the

project through its certification processes.

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Checklist for Individual Homes Credits Points

Site Efficiency

Mandatory Requirement 1 Adherence to Local Regulations Required Mandatory Requirement 2 Prevention of Soil Erosion Required SE Credit 1.0 Access to Household Amenities in the

Neighbourhood 1

SE Credit 2.0 Retain Natural Topography or Landscape 2 SE Credit 3.0 Heat Island Effect: Roof 2SE Credit 4.0 Parking Capacity 2 SE Credit 5.0 Alternate Fuelling Facility for Vehicles 1SE Credit 6.0 Provision for Physically Challenged 1 SE Credit 7.0 Home User Guide NA 9Water Efficiency Mandatory Requirement 1 Rainwater Harvesting Required Mandatory Requirement 2 Indoor Water Usage Required WE Credit 1.0 Turf Design to Reduce Water Consumption 2WE Credit 2.0 Drought Tolerant Species 3 WE Credit 3.0 Management of Irrigation System 2WE Credit 4.0 Rainwater Harvesting 3 WE Credit 5.0 Onsite Grey Water Treatment 2WE Credit 6.0 Grey Water Reuse 3 WE Credit 7.0 Segregation of Plumbing Line for Flushing 2WE Credit 8.0 Indoor Water Usage - Fixtures 6

23Energy Efficiency

Mandatory Requirement 1 CFC Reduction in HVAC Equipment Required EE Credit 1.0 Maximise Energy Performance 10 EE Credit 2.0 Building Performance Audit 1EE Credit 3.0 Refrigerators 1 EE Credit 4.0 Solar Water Heater 1EE Credit 5.0 Captive power Generation 1 EE Credit 6.0 Onsite Renewable Energy 3EE Credit 7.1 Lighting - Internal 1 EE Credit 7.2 Lighting - External 1EE Credit 8.0 Home Automation System 1 EE Credit 9.0 Energy Saving Measures in other Equipment 1

21Material & Resources Mandatory Requirement 1 Separation of Wastes Required MR Credit 1.0 Waste Reduction, During Construction 3 MR Credit 2.0 Solid Waste Management, Post Occupancy 1MR Credit 3.0 Materials with Recycled Content 2 MR Credit 4.0 Rapidly Renewable Materials 1MR Credit 5.0 Regional Materials 2 MR Credit 6.0 Material Reuse 2MR Credit 7.0 Wood Based Building Materials and Furniture 2

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Indoor Air Quality Mandatory Requirement 1-Option A


Required


Fresh Air Ventilation-Non Air Conditioned Homes

Required

Mandatory Requirement 2 Tobacco Smoke Control Required Mandatory Requirement 3 Day Light for 50% Spaces Required IAQ Credit 1.0 Exhaust Systems 2IAQ Credit 2.0-Option A Improved Fresh Air Ventilation for Air

Conditioned Homes 1



IAQ Credit 3.0 Low VOC Materials 2 IAQ Credit 4.0 Carpets 1IAQ Credit 5.0 Building Flush Out 1 IAQ Credit 6.0 Day Light : Day Light for 75%/ 95% of Spaces 2IAQ Credit 7.0 Design to Enhance Cross Ventilation 1 10Innovation in Design

ID Credit 1.1 Innovation in Design 1ID Credit 1.2 Innovation in Design 1 ID Credit 1.3 Innovation in Design 1ID Credit 2.0 IGBC AP 1 4Total Number of Points 80 IGBC Green Homes' Certification Levels for Individual Homes

Rating Points Certified 32 – 39 Silver 40 – 47 Gold 48 – 55 Platinum 56 – 80

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Checklist for Multi-dwelling units Credits Points

Site Efficiency

Mandatory Requirement 1 Adherence to Local Regulations Required Mandatory Requirement 2 Prevention of Soil Erosion Required SE Credit 1.0 Access to Household Amenities in the

Neighbourhood 1

SE Credit 2.0 Retain Natural Topography or Landscape 2 SE Credit 3.0 Heat Island Effect: Roof 2SE Credit 4.0 Parking Capacity 2 SE Credit 5.0 Alternate Fuelling Facility for Vehicles 1SE Credit 6.0 Provision for Physically Challenged 1 SE Credit 7.0 Home User Guide 1 10Water Efficiency Mandatory Requirement 1 Rainwater Harvesting Required Mandatory Requirement 2 Indoor Water Usage Required WE Credit 1.0 Turf Design to Reduce Water Consumption 2WE Credit 2.0 Drought Tolerant Species 3 WE Credit 3.0 Management of Irrigation System 2WE Credit 4.0 Rainwater Harvesting 3 WE Credit 5.0 Onsite Grey Water Treatment 3WE Credit 6.0 Grey Water Reuse 2 WE Credit 7.0 Segregation of Plumbing Line for Flushing 2WE Credit 8.0 Indoor Water Usage - Fixtures 6

23Energy Efficiency

Mandatory Requirement 1 CFC Reduction in HVAC Equipment Required EE Credit 1.0 Maximise Energy Performance 10 EE Credit 2.0 Building Performance Audit 1EE Credit 3.0 Refrigerators NAEE Credit 4.0 Solar Water Heater 1 EE Credit 5.0 Captive Power Generation 1EE Credit 6.0 Onsite Renewable Energy 3 EE Credit 7.1 Lighting - Internal NAEE Credit 7.2 Lighting - External 1EE Credit 8.0 Home Automation System 1 EE Credit 9.0 Energy Saving Measures in other Equipment 1

19Material & Resources Mandatory Requirement 1 Separation of Wastes Required MR Credit 1.0 Waste Reduction, During Construction 3 MR Credit 2.0 Solid Waste Management, Post Occupancy 1MR Credit 3.0 Materials with Recycled Content 2 MR Credit 4.0 Rapidly Renewable Materials NAMR Credit 5.0 Regional Materials 2 MR Credit 6.0 Material Reuse NAMR Credit 7.0 Wood Based Materials and Furniture 2

10

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Indoor Air Quality Mandatory Requirement 1-Option A


Required


Fresh Air Ventilation-Non Air Conditioned Homes

Required

Mandatory Requirement 2 Tobacco Smoke Control Required Mandatory Requirement 3 Day Light for 50% Spaces Required IAQ Credit 1.0 Exhaust Systems 2IAQ Credit 2.0-Option A Improved Fresh Air Ventilation for Air

Conditioned Homes 1



IAQ Credit 3.0 Low VOC Materials 2 IAQ Credit 4.0 Carpets NAIAQ Credit 5.0 Building Flush Out 1IAQ Credit 6.0 Day Light : Day Light for 75%/ 95% of Spaces 2 IAQ Credit 7.0 Design to Enhance Cross Ventilation 1 9Innovation in Design

ID Credit 1.1 Innovation in Design 1ID Credit 1.2 Innovation in Design 1 ID Credit 1.3 Innovation in Design 1ID Credit 2.0 IGBC AP 1 4Total Number of Points 75 IGBC Green Homes' Certification Levels for Multi-dwelling Units

Rating Points Certified 30 – 37 Silver 38 – 44 Gold 45 – 52 Platinum 53 – 75

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SITE EFFICIENCY

Site Efficiency

(Maximum Points: 10)

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SITE EFFICIENCY

Adherence to Local Regulations

Mandatory Requirement 1

Goal:

To ensure that the building complies with the required statutory regulatory codes.

Compliance options:

The following measures need to be ensured

¶ Approval of the plan from the competent Government authority

¶ Fit for occupancy document from the competent Government authority

Documentation Required:

Provide an approved plan and fit for occupancy documents obtained from the competent Government authority.

Provide photographs/ as built drawings of the completed building.

Approach and Methodologies:

Survey the statutory requirements in the area that the building is constructed. Ensure that these requirements are incorporated at the design stage.

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SITE EFFICIENCY

Prevention of Soil Erosion


Goal:

To control soil erosion and thereby reduce negative impacts to the site.

Compliance options:

Measures to control erosion:

1. Ensure erosion control measures conform to the best management practices highlighted in the National Building Code of India (Part 10 Section, Chapter 4) – Protection of Landscape during Construction.

2. Ensure that topsoil is stockpiled for reuse later.

3. Develop appropriate measures to address soil erosion, post occupancy.


Submit a description on the measures implemented/ provide the erosion control plan adopted. Provide photographs to show erosion control measures adopted at site. Submit a post occupancy erosion control plan.


Evolve strategies to stockpile top soil and reuse later for landscaping purpose or stockpiled soil can be donated to other sites for landscaping purpose.

Consider adopting measures such as temporary and permanent seeding, mulching, earth dikes, silt fencing, sediment traps, and sediment basins.

Open areas can be landscaped (e.g. grass, trees, shrubs, etc.). Paved areas can be installed with permeable paving. For impermeable surfaces direct all run off towards storm water collection pits.

23

SITE EFFICIENCY

Access to Household Amenities in the Neighbourhood

SE Credit 1.0 Points: 1

Goal:

To reduce dependence on personal automobile use thereby reducing the associated environmental impacts.

Compliance Options:

Select a site with access to atleast five basic household amenities, within a walking distance of 1 Km (see list in Exhibit A)

OR

Select a site which is within 1 Km of walking distance to a public transport service (bus stop/ railway station).

Note: This point can be earned only if the household amenities or transport services is available before or at the time of project completion.


Provide an area map (to scale) indicating the distances from the proposed building to the household amenities or public transport systems. Provide photographs.


Select sites near public transit and/or household services and amenities that are accessible by safe, convenient pedestrian pathways. Only restaurants can be counted twice and all other amenities to be considered only once.

24

SITE EFFICIENCY

Exhibit A - List of Basic Household Amenities

Ǐ Grocery store

Ǐ Electrician/ plumbing services

Ǐ School

Ǐ Dhobi/ Laundry

Ǐ Bank/ ATM

Ǐ Crèche

Ǐ Fire Station

Ǐ Fitness Center /Gym

Ǐ Library

Ǐ Medical clinic/ hospital

Ǐ Pharmacy

Ǐ Post Office/ Courier service

Ǐ Place of Worship

Ǐ Restaurant

Ǐ Supermarket

Ǐ Other neighborhood-serving retail

Ǐ Electricity/ water utility bills payment counter

Ǐ Police Station

Ǐ Children playground

25

SITE EFFICIENCY

Retain Natural Topography or Landscape


Goal:

Minimise disturbances to the building site so as to reduce long-term environmental impacts.

Compliance Options:

Avoid disturbance to site by retaining the natural topography of the site (and/ or) landscape at least 30% of the site area. Points are awarded as follows:

Points for retaining natural topography or landscaping

Notes:Parking areas, walkways etc. are considered as site disturbances. Under this credit Roof garden cannot be considered for the purpose of calculation of landscaped area.Potted plants will not be considered as landscape under this credit.


Provide drawings, calculations and photographs showing the site area with natural topography (and/or) landscaped area.


Design the building with a minimal footprint (by tightening design needs and stacking floor plans). Consider retaining the natural landscapes in the site, to the extent possible. In sites which have fully grown trees, avoid destruction. Avoid developing paved surfaces on the site, as much as possible.

Percentage of site area with natural

topography (and/or) landscaped area

Points

> 30% > 40%

12

26

SITE EFFICIENCY

Heat Island Effect: Roof


Goal:

Reduce heat islands (thermal gradient differences between developed and undeveloped areas) to minimise impact on microclimate.

Compliance Options:

Use high albedo roofing material or heat resistant paint or china mosaic or white cement tiles or any other highly reflective materials over the roof to cover atleast 50% of the exposed roof area.

OR

Provide vegetation to cover atleast 50% of the exposed roof area.Points are awarded as below.

Points for Heat Island Effect - Roof


Provide roof drawings highlighting location and the extent of highly reflective roof materials/ green roof provided.


Consider installing heat resistant paint and vegetated roofs to reduce the heat island effect. Typical materials with high reflective properties include china mosaic, white cement tiles, paints with high Solar Reflective Index (SRI) values etc.

Percentage of roof area with high

reflective material/ roof garden

Points

> 50% > 75%

12

27

SITE EFFICIENCY

Parking Capacity


Goal:

To provide adequate parking within the site to minimise disturbance on road.

Compliance Options:

Parking for Building Occupants: (1 point) Parking capacity to be provided as per the following guidelines (OR) as per local bye laws, whichever is more stringent:

Parking Requirement

Parking for Visitors: (1 point)

Provide parking provisions for visitors as follows:

¶ For individual homes provide 1 visitor car park

¶ For residential complexes provide 10% of the total parking capacity as parking for visitors


Provide drawings and calculations showing parking provisions.


Design the building to ensure adequate parking provisions are made to cater to the occupants as well as the visitors. Parking provisions should take into account two wheelers and four wheelers. While planning parking, consider basement/ stilts parking to reduce the heat island effect. When surface parking is planned, consider permanent cover; however consider design strategies to address heat island effect as a result of such provisions.

No. of bedrooms per dwelling unit

2 wheeler parking (nos)

4 wheeler parking (nos)

1234

1111

0122

28

SITE EFFICIENCY

Alternate Fuelling Facility for Vehicles


Goal:

To encourage the use of alternate fuel vehicles to reduce pollution from automobile use.

Compliance Options:

Provide alternate fuelling facility within the site, as follows:

¶ For individual homes provide atleast one such facility

¶ For residential complexes provide alternate fuelling facility in a common area, to cover 3% of the total parking capacity. The charging facility should cater to both two wheelers and four wheelers.

Note: Alternate fuelling facilities should be non-fossil based fuels.


Provide parking plans showing provisions for alternate fuelling facility. Provide calculations demonstrating that these facilities meet the credit criteria.


Survey the type of alternately fuelled vehicles already plying on the roads and also survey the kind of vehicles which may come up in the future. Create facilities so as to refuel these kinds of vehicles. Consider having adequate number of recharging facilities based on the recharge time.

While considering such fuelling facilities, ensure all safety aspects have been addressed.

29

SITE EFFICIENCY

Provision for Physically Challenged


Goal:

To ensure that the building is user-friendly for physically challenged persons.

Compliance Options:

The building design should incorporate the following provisions for physically challenged persons, as applicable:

¶ Preferred car parking spaces in an area which has easy access to the main entrance or closer to the lift (one parking space for every 100 dwelling units)

¶ Provision for easy access to the main entrance

¶ Uniformity in flooring level in common areas

¶ Rest rooms (toilets) in common areas designed for physically challenged persons


Provide drawings showing provisions for physically challenged persons. Also submit photographs.


Identify all probable facilities required to cater to physically challenged persons. Design the building to ensure that certain basic minimum provisions for handicapped persons are incorporated.

30

SITE EFFICIENCY

Home User Guide

SE Credit 7.0 Points: 1 Not applicable for Individual Homes

Goal:

Provide occupants with descriptive guidelines that educate and help them implement green design features within their apartment/ house space.

Compliance Options:

Publish an illustrated document that provides occupants with design and construction information that details the following:

¶ Description of the sustainable design and construction features incorporated in the Green Home project by builder/ developer.

¶ Information that enables occupants to coordinate their space design and construction with Green Home design features.


Provide a copy of the Home user guide which details occupant design and construction guidelines.


Develop a summary of sustainable design features incorporated in the Green Home project. Also include tips and guidelines which can be considered by the occupants in designing the interiors.

31

WATER EFFICIENCY

Water Efficiency


32

WATER EFFICIENCY

Rainwater Harvesting


Goal:

To increase the ground water table or to reduce the usage of potable water through effective and appropriate rainwater management.

Compliance Options:

Provide rainwater harvesting or storage system (including surface run-off and/or roof run-off) to capture atleast 30% of the rainfall on roof and non roof areas. Storage system or harvesting structure must be designed to hold a 20 mm rainfall in one hour.

Note: Non Roof areas are the impervious areas on the site excluding the building footprint area and those areas which have a permanent roof.


Provide details on the rainwater harvesting system specifying capacity. Provide details of application of captured rainwater usage with quantity calculations.


Survey the water table in the area. Design appropriate harvesting techniques. Capture rainwater from roof top or other non roof surfaces in the site for reuse. This can be designed such that the first shower can be let out since it may carry impurities.

33

WATER EFFICIENCY

Indoor Water usage


Goal:

To minimise indoor water usage by installing efficient water fixtures.

Compliance Options:

Select water fixtures whose flow rates are as indicated in the table below:

Baseline Flow Rates for Water Fixtures in a Typical Household

S.No Items Base line Units 1 Flushing 8/4 LPF2 Faucets*

(taps) 7.6 LPM

3 Showers* 7.6 LPM¶ At flowing water pressure of 3 bar

Note: Flowing water pressure of 3 bar does not mean that the water supply in the building is at 3 bar. The building fixtures can operate at lower pressures but to show compliance under this credit, the flow rates are to be extrapolated at 3 bar.


Submit data manual by product manufacturer to confirm that conditions above have been satisfied.


While selecting water fixtures, look for the efficiencies. The product catalogue or the brochure may detail the flow rates at various pressures. Fixtures are available with ultra high efficiency which can reduce substantial quantity of potable water consumption.

34

WATER EFFICIENCY

Turf Design to Reduce Water Consumption

WE Credit 1.0 Points: 2

Goal:

To limit such landscape which consume large quantities of water.

Compliance Options:

Limit the use of turf on the site so as to conserve potable/ treated water. Points are awarded as specified below.

Points for Limited Use of Turf

Turf area as a percentage of total landscaped area

Points

< 20%< 40%

21

Areas planted with turf should not exceed a slope of 25 percent (i.e., a 4 to 1 slope).

Note: This point is applicable only for those projects which has 30% of the site area landscaped.


Provide a landscape plan specifying the species used. Provide photographs


Landscape as much open areas as possible. Select turf, plants, shrubs and trees which consume less water.

35

WATER EFFICIENCY

Drought Tolerant Species


Goal:

Landscape to be designed to ensure minimum consumption of water.

Compliance Options:

Ensure atleast 40% of the landscaped area is planted with drought tolerant species. Points are awarded as specified below.

Points for Reducing Water Consumption through Drought Tolerant Species

Note: This point is applicable only for those projects which has 30% of the site/ plot area landscaped.


Provide a landscape plan indicating the percentage of landscaped area which uses drought tolerant species. Also provide a list of the species used and highlight their drought tolerant nature.


Select species that are well-adapted to the site. Select those species which are drought tolerant. Consider xeriscaping as an approach for landscaping.

Drought tolerant species as a percentage of the total landscaped area

Points

> 40%> 60%

> 80%

123

36

WATER EFFICIENCY

Management of Irrigation system


Goal:

Reduce the demand for irrigation water through water-efficient management techniques.

Compliance Options:

High Efficient Irrigation System (1 point for any two features)

Provide high efficient irrigation system incorporating atleast two features mentioned below: ¶ Provide a central shut-off valve ¶ Provide a sub-meter for the irrigation system ¶ Provide a moisture sensor controller.¶ Turf and each type of bedding area (based on watering needs) must be

segregated into independent zones ¶ At least 50% of landscape planting beds must have drip irrigation system to

reduce evaporation ¶ Install time based controller for the valves such that the evaporation loss is

minimum and plant health is ensured. ¶ Use pressure regulating devices to maintain optimal pressure and prevent

misting. ¶ Any other innovative methods for watering


Provide a detailed description of managing the irrigation systems installed. Provide landscape plans with the names of the species. Provide cut sheets and photographs of the systems installed.


The irrigation management system must be designed based on the requirements of the landscape plan, and installed as per the design. The designer and the installer must work together and ensure the planned performance of the system.

37

WATER EFFICIENCY

Rainwater Harvesting


Goal:

To increase the ground water table or to reduce the usage of potable water through effective and appropriate rainwater management.

Compliance Options:

Provide rainwater harvesting or storage system (including surface run-off & roof run-off) to utilize in landscape irrigation or indoor water usage. Storage system or harvesting structure must be designed to hold a 20 mm rainfall in one hour. Points are awarded as below.

Points for Rainwater Harvesting

Notes: In areas where recharging the aquifier is not feasible, collection and reuse may be considered.


Provide details on the rainwater harvesting system specifying capacity. Provide details of application of captured rainwater usage with quantity calculations.


Survey the water table in the area. Design appropriate harvesting techniques. Capture rainwater from roof top or other non roof surfaces in the site for reuse. This can be designed such that the first shower can be let out since it may carry impurities. In areas where recharging the aquifier is not possible, collection and reuse may be considered.

Rainwater Harvesting System to capture/ recharge

Points

Ó 50% of rainfall from roof & non roof area



1

2

3

38

WATER EFFICIENCY

Onsite Grey Water Treatment


Goal:

Reduce the consumption of potable water by in situ treatment of grey water generated so as to not pollute the municipal streams.

Compliance Options:

Onsite Grey Water Treatment System

Provide an onsite grey water treatment system to treat atleast 50% of greywater generated in the building. Points are awarded as specified below.

Points for Grey Water Treatment

Note: Grey water is neither clean nor heavily soiled waste water that comes from clothes washers, bath tubs, showers, bathroom wash basins kitchen sinks and dish washers. More specifically it is the untreated waste water which has not come into contact with toilet waste.


Provide a detailed description of the onsite grey water treatment system. Provide photographs/ cut sheets from the manufacturers. Provide water balance of the building. Provide details of usage of treated grey water within the building.


Calculate the grey water volumes generated in the building. Design appropriately the capacity of the onsite grey water treatment system.

Percentage of grey water treated

Points

> 50% 1

> 75% 2

39

WATER EFFICIENCY

Grey Water Reuse


Goal:

Reduce demand for potable water by using treated grey water.

Compliance Options:

Grey Water Reuse System

Reuse atleast 50% of the treated grey water for landscape or other purposes. Points are awarded as detailed below.

Points for Reuse of Treated Grey Water

Reuse of treated grey water Points Treatment of > 50% of grey water + Reuse 1

Treatment of > 75% of grey water + Reuse

Treatment of > 95% of grey water + Reuse

2

3

Note: This point can be claimed only if 50% of total grey water generated from all user applications is treated in situ.


Provide a detailed description on the grey water re-use system. Also provide calculations on quantity and quality of grey water reused. Provide details of applications of grey water reused.


Install an adequately sized grey water treatment plant and explore areas within the building where grey water can be reused. In areas where there is human contact ensure that the quality of the treated grey water is fit and safe for reuse. Treated grey water can be typically used for irrigation, flushing and make up water for air-conditioning systems.

40

WATER EFFICIENCY

Segregation of plumbing line for flushing


Goal:

To have infrastructure in the building so as to encourage use of treated grey water.

Compliance Options:

Separate Plumbing Line for flushing

Provide separate water plumbing lines for flushing purpose and source 100% of the flushing water requirements from the treated grey water available.

Note: This point can be claimed only if 50% of total grey water generated from all user applications is treated in situ.


Submit drawings showing separate plumbing lines for treated grey water. Provide calculations to show the quantity of grey water used for flushing.


Evaluate the water consumption in the building and ascertain the quantity of grey water generated. Also evaluate the availability of grey water for flushing purposes and accordingly install the dual plumbing lines. Design the plumbing system accordingly.

41

WATER EFFICIENCY

Indoor Water usage - Fixtures


Goal:

To minimise indoor water usage by installing efficient water fixtures.

Compliance Options:

Select water fixtures for all the three items mentioned below whose flow rates are atleast 20% lower than the given baseline values. Points are awarded as below.

Baseline Flow Rates for Water Fixtures in a Typical Household & Points for Efficient Water Fixtures

Points Awarded S.No Items Base line Units Water consumption

20% Lower than base line

Water consumption- 30% lower than

base line 1 Flushing 8/4 LPF 1 2 2 Faucets*

(taps) 7.6 LPM 1 2

3 Showers* 7.6 LPM 1 2 * At flowing water pressure of 3 bar

Note: Flowing water pressure of 3 bar does not mean that the water supply in the building is at 3 bar. The building fixtures can operate at lower pressures but to show compliance under this credit, the flow rates are to be extrapolated at 3 bar.


Submit data manual by product manufacturer to confirm that conditions above have been satisfied. Provide calculations to show the percentage of water savings.


While selecting water fixtures, look for the efficiencies. The product catalogue or the brochure may detail the flow rates at various pressures. Fixtures are available with ultra high efficiency which can reduce substantial quantity of potable water consumption.

42

ENERGY EFFICIENCY

Energy Efficiency


43

ENERGY EFFICIENCY

CFC Reduction in HVAC Equipment


Goal:

To avoid the use of such refrigerants which will impact the ozone layer.

Compliance Options:

Refrigerants used in Heating, Ventilation & Air-conditioning (HVAC) equipment installed must be CFC free.


Provide a declaration signed by the responsible party declaring that the building HVAC systems do not used CFC based refrigerants.


Survey the market for all CFC free Air-conditioning and heating systems. Such systems are available even for small capacities. Install HVAC equipment which does not use CFC based refrigerant.

44

ENERGY EFFICIENCY

Maximise Energy Performance

EE Credit 1.0 Points: 10 (2 points Mandatory)

Goal:

Optimise the energy efficiency of the building to reduce environmental impacts from excessive energy use.

Compliance Options:

The project can choose any one of the following options:

Option 1 - Prescriptive Approach (6 points) as detailed in Annexure – II

The prescriptive approach does not allow for tradeoffs. This approach awards credit points if the project design is 10% better than the baseline parameters as outlined in Annexure I.

OR

Option 2 – Performance Based Approach (10 points) as detailed in Annexure – III

The Performance based approach involves a computer simulation modeling. Tradeoffs are allowed. This approach allows the project to exceed the baseline energy consumption by a maximum of 29.5%.


Option 1

Provide the following documents:

¶ The manufacturer cut sheets indicating ‘U’ and SHGC values.

¶ Details of roof, roof insulation material, specifying the U value of the roof assembly.

¶ Details of the wall construction, specifying the U value of the wall assembly.

¶ Manufacturers cut sheets specifying the energy efficiency values of the Air conditioning or Heating units.

¶ Details of the design lighting load. Submit the total design lighting load divided by the total livable space.

45

ENERGY EFFICIENCY

Option 2

Provide the following documents:

¶ The energy simulation results.

¶ The manufacturers cut sheets indicating ‘U’ and SHGC values.

¶ Details of roof, roof insulation material, specifying the U value of the roof assembly.

¶ Details of the wall construction, specifying the u value of the wall assembly.

¶ Manufacturers cut sheets specifying the energy efficiency values of the Air conditioning or Heating units.

¶ Details of design lighting load.


Consider a holistic energy efficiency approach to include the building orientation, envelope, systems, lighting and other equipment.

Research on the materials and equipment available in the market and their properties with regard to energy performance. While selecting these material and equipment, consider their associated environmental impacts.

Decision making with respect to selection of materials can be based on a life cycle approach rather than the initial cost.

46

ENERGY EFFICIENCY

Annexure - I Baseline Parameters for Energy Performance of the Building

A. Envelope Measures:

Window Glazing - ‘U’ Factor and SHGC

U-factor SHGCClimate Zone * (W/m2-oC) WWR < 20% WWR < 30%

Composite Hot and Dry Warm and Humid ModerateCold

3.33.35.06.93.3

0.380.380.380.50

Not required

0.300.300.300.40

Not required

Roof Assembly ‘U’ Factor

Wall Assembly ‘U’ FactorClimate Zone* ‘U’-factor of the

overall assembly(W/m2/oC)


1.11.11.251.250.5

Note: For Climatic Zone of India, please refer Exhibit – B.

Climate Zone* ‘U’-factor of the overall assembly

(W/m2/oC)


0.500.500.500.500.50

47

ENERGY EFFICIENCY

B. Air conditioning and Heating systems/ equipment

For Centrally Air Conditioned Buildings and Buildings with Heating Systems

Centralised air conditioning and heating should cover atleast the bedrooms.For Centrally Air Conditioned Residential Buildings the minimum efficiency requirements as highlighted in ASHRAE 90.1-2004 must be complied with.

Minimum efficiency requirements (ASHRAE 90.1-2004)

Equipment Type Size Category Minimum Efficiency a

TestProcedures

Air Cooled, with Condenser, Electrically Operated

All Capacities 2.80 COP

3.05 IPLV

Air Cooled, with Condenser, Electrically Operated


3.45 IPLV

ARI 550/590

<150 tons 4.45 COP

5.20 IPLV

>150 tons and

<300 tons

4.90 COP

5.60 IPLV

Water Cooled, Electrically Operated, Positive Displacement(Reciprocating)

>300 tons 5.50 COP

6.15 IPLV

ARI 550/590

<150 tons 5.00 COP

5.25 IPLV

>150 tons and

<300 tons

5.55 COP

5.90 IPLV

Water Cooled, Electrically Operated, Centrifugal

>300 tons 6.10 COP

6.40 IPLV

ARI 550/590

Air-Cooled Absorption Single Effect


Water-Cooled Absorption Single Effect


ARI 560

48

ENERGY EFFICIENCY

Absorption Double Effect, Indirect-Fired

All Capacities 1.00 COP 1.05 IPLV

Absorption Double Effect, Direct-Fired


1.00 IPLV

For Unitary Air Conditioners/ heat pumps:

For unitary systems installed, the baseline COP/ EER will be equivalent to the three star rated equipment under BEE labeling programme.

For list of Air conditioning units rated by BEE please refer the BEE website http://www.bee-india.nic.in/

For buildings with unitary heat pumps, the minimum efficiency requirements are detailed below.

Minimum efficiency requirements for Packaged Terminal Heat Pumps (PTHP)

Equipment Type Size Category(Input)

MinimumEfficiency

COP

TestProcedure

PTHP (Heating Mode)

All capacities 2.9 – (0.026 x *Cap/1000)c

ARI 310/380

* c : Capacity in Btu/hr

C. Lighting Power Density

The Lighting power density within the building should be less than 0.5 W/Sq.ft

AND

The Lighting power density for common areas should be less than 0.3 W/Sq.ft in the case of leased or sold out residential buildings.

49

ENERGY EFFICIENCY

Exhibit B – Climatic Zone of India

Courtesy: http://www.bee-india.nic.in/

50

ENERGY EFFICIENCY

Annexure - II Option 1 – Prescriptive Approach (Maximum 6 points)

A. Envelope Measures: (3 points)

The project must ensure that the envelope measures design is 10% better than the baseline parameters as outlined in Annexure I.

¶ Window Glazing - ‘U’ Factor and SHGC (1 point)

¶ Roof Assembly ‘U’ Factor (1 point)

¶ Wall Assembly ‘U’ Factor (1 point)

B. Air conditioning and Heating systems/ equipment (Maximum 2 points)

¶ For Centrally Air Conditioned Buildings and Buildings with Heating Systems (1 point)

For Centrally Air Conditioned Residential Buildings the minimum efficiency requirements as highlighted in ASHRAE 90.1- 2004 must be exceeded by 10%.

¶ For Unitary Air Conditioners/ heat pumps: (1 point)

For unitary systems installed, all air conditioning units must be rated four or five star under BEE labeling.

For unitary systems a point can be claimed if the selected equipment is BEE four star rated and above.

¶ For passive or innovative heating and cooling technologies: (2 points)

Design calculations to be submitted to meet the following criteria:

1. The technology should be capable of achieving atleast 280 C in summer and 240 Cin winter. RH both in summer and winter should be less than 60%. Comfort conditions to be considered both for summer and winter.

2. The comfort conditions should be met for a minimum of 4000 hours per year

Note: Only permanently installed systems will be considered for this credit compliance

C. Lighting Power Density (1 point)

The Lighting power density within the building and/ or in common areas should be 10% less than the baseline value as detailed in Annexure I.

51

ENERGY EFFICIENCY

Annexure - III

Option 2 – Performance Based Approach (10 points)

The project must perform a computer simulation model taking into consideration the building envelope, lighting, HVAC and other systems. The base case criteria for the computer simulation will be the values as detailed in Annexure I.

The following comfort conditions should be considered for energy simulation:

1. Indoor temperature range should be within 26 + 20 C all through the year. RH both in summer and winter should be less than 60%. Comfort conditions to be considered both for summer and winter.

2. The comfort conditions should be met for a minimum of 4000 hours per year

(The detailed protocol to be followed in energy simulation will be developed)

Points are awarded based on percentage savings as detailed below:

Points for Maximise Energy Performance (Option 2)

Percentage Savings Points

7% 1 9.5% 2 12% 3

14.5% 4 17% 5

19.5% 6 22% 7

24.5% 8 27% 9

29.5% 10

52

ENERGY EFFICIENCY

Building Performance Audit

EE Credit 2.0 Points: 1

Goal:

To encourage continuous monitoring and enhance the performance of the residential dwelling.

Compliance Options:

Provide meters for any four of the following:

¶ Meter for total energy consumption of the building

¶ Energy meter for internal lights

¶ Energy meter for external lights

¶ Meter for municipal water pumping

¶ Meter for grey water pumping

¶ Meter for landscaping requirements

¶ Btu meter for chilled water consumption for individual units


Describe the metering equipment installed. Provide cut sheets for the meters installed.


Identify all the major energy and water consuming equipment and install systems to monitor their consumptions. Develop and implement a measurement and verification mechanism to compare predicted savings to actual energy performance.

53

ENERGY EFFICIENCY

Refrigerators

EE Credit 3.0 Points: 1 Not applicable for multi-dwelling units

Goal:

To encourage the use of energy efficient appliances to reduce energy consumption in the proposed building.

Compliance Options:

All Direct Cool and Frost Free Refrigerators installed must be rated atleast three stars under BEE labeling.

List of Refrigerators rated by BEE can be referred from the BEE website http://www.bee-india.nic.in/


Provide manufacturers brochures of the refrigerators used. Provide photographs.


Conduct a market survey before selecting appliances. Consider the energy efficiency of these appliances. Consider BEE rated appliances.

54

ENERGY EFFICIENCY

Solar Water Heater


Goal:

To encourage use of solar energy for water heating applications in the building.

Compliance Options:

Provide solar water heating system to satisfy hot water for domestic needs. The capacity for the system should be designed as follows:

Capacity for Solar Water Heater

Number of Bedrooms Capacity in litres per day

Upto 3

> 3

100

200


Submit installation design for solar hot water system. Provide manufacturers cut sheets and purchase invoice.


Calculate hot water requirement for the building. The design should consider the availability of space to install the solar heating panels.

55

ENERGY EFFICIENCY

Captive Power Generation


Goal:

To reduce dependence on fossil fuels for insitu power generation.

Compliance Options:

Use bio fuels or non edible oils or any other non-fossil based fuel for captive power generation to meet atleast 10% of the total connected load.


Submit details on the alternative fuel used for captive power generation.


Survey the market for available captive power generators which operate on bio fuels or non edible oils. Also consider availability of fuel on a sustained basis and the economic viability.

56

ENERGY EFFICIENCY

Onsite Renewable Energy


Goal:

Promote self sufficiency in energy through renewable technologies for insitu power generation and use within the building.

Compliance Options:

Install renewable energy systems for atleast 5% of the total connected load of the building. Points are awarded as below.

Points for Renewable Energy Power

Documentation required:

Submit installation design for renewable energy source. Submit cut sheets from manufacturers and provide purchase invoice.


Take into consideration the renewable energy feasibility while determining the power requirement from the local utility. The following are the sources of renewable energy that can be considered under this credit: Solar energy, Wind energy, Biomass, Bio gas etc.

Percentage of connected load

Points

> 2.5 % > 5.0 % > 7.5 %

123

57

ENERGY EFFICIENCY

Lighting – Internal

EE Credit 7.1 Points: 1 Not applicable for multi-dwelling units

Goal:

To encourage use of energy efficient lighting systems to reduce energy consumption within the home.

Compliance Options:

Install energy efficient internal lighting fixtures which are atleast three star rated under BEE labeling programme or fixtures which are more efficient.

Points are awarded as follows:

Points for Energy Efficient Internal Lighting

Lighting Provision Points

100% of internal light fixtures are BEE 3 star rated or more efficient

1

The list of BEE labeled light fittings can be referred from the BEE websitehttp://www.bee-india.nic.in/.


Provide specifications and drawings of the internal light fixtures used and provide copies of purchase orders/ receipts for lighting in all rooms. When calculating the percentage of energy efficient light fittings the following rooms can be considered: living rooms, dining rooms, kitchens, bedrooms, hallways, study rooms, bathrooms and utility rooms.


Survey available energy efficient lighting fixtures in the market. Also consider the life of the lamps and evaluate the economic viability

58

ENERGY EFFICIENCY

Lighting – External


Goal:

To encourage the use of energy efficient outdoor lighting fixtures, thereby reducing overall energy consumption.

Compliance Options:

Provide all external space lighting by energy efficient lighting fixtures.

Points are awarded as follows:

Points for Energy Efficient External Lighting

Lighting Provision Points

All external light fittings are BEE 3 star rated lamps or more efficient 1


Provide specifications and drawings of the external light fixtures used or provide copies of purchase orders/ receipts for lighting in all external spaces. Provide details of daylight cut off sensors or timers.


Survey available energy efficient lighting fixtures in the market. Also consider the life of the lamps and evaluate the economic viability. Following are some of the energy efficient light fittings: efficient tubular fluorescent light fittings, T5 lamps, Compact fluorescent light fittings, Light emitting diodes etc.,

59

ENERGY EFFICIENCY

Home Automation System


Goal:

To increase energy efficiency through controls and home automation systems.

Compliance Options:

Install a Home Automation System to address atleast two of the following:

For individual homes - ¶ Timer based controls for all lawn sprinklers ¶ Movement sensors for lighting control to cover 100% of the livable area (which

includes bedrooms, living room, kitchen, toilets, study, staircases etc) ¶ Dimmer controls/ daylight cut off sensors for all internal lighting ¶ Any other feature or control which reduces energy consumption

For Multi-dwelling units - ¶ Timer based controls for all lawn sprinklers ¶ Movement sensors for lighting control to cover 100% of the common area (which

includes staircases, corridors, lifts, club house, gym etc) ¶ Dimmer controls/ daylight cut off sensors for all external lighting ¶ Any other feature or control which reduces energy consumption


Provide details on the home automation system installed. Provide manufacturers cut sheets/ photographs.


Determine the applications that can be included in the home automation system. Obtain details of home automation system providers and install a system which can reduce energy consumption in the home.

60

ENERGY EFFICIENCY

Energy Saving Measures in Other Equipment


Goal:

To conserve energy in the use of other equipment.

Compliance Options:

Provide any three of the following measures:

¶ Level controllers in overhead water tanks ¶ Effective lift management ¶ Minimum 60% efficiency in water pumps ¶ Minimum 75% efficiency in motors ¶ No incandescent lights in the interiors ¶ Electronic ballasts for all lighting fixtures


Provide details of the energy saving measures provided which include manufacturers cut sheets, drawings etc as applicable.


Determine the applications where energy saving measures can be adopted. Obtain details of the equipment required, identify the vendors and install energy saving measures.

61

MATERIALS AND RESOURCES

Materials and Resources


62


Separation of wastes

Mandatory requirement 1

Goal:

To facilitate segregation of waste at source so as to prevent such waste being sent to landfills.

Compliance Options:

¶ Provide separate bins at individual house level to collect organic waste, plastics and paper.

AND

¶ In multi dwelling units, in addition to the above, also provide a common facility to collect waste which should cover atleast three of the following: × Organic waste × Paper & Cardboard× Plastics × Metals (tins and cans)× ‘e’ waste and × Batteries


Submit detailed drawings of the bins and their location within the building.


Allocate suitable site for sorting out dry and wet wastes. Examine the scope for recycling items of waste collected from building debris and residential wastes. Locate local dealers of waste material such as glass, plastic, paper, newspaper, cardboard, organic wastes and ‘e’ wastes & batteries. Educate residents about recycling methods.

63


Waste Reduction during Construction

MR Credit 1.0 Points: 3

Goal:

Minimise construction waste being sent to landfills.

Compliance Options:

Waste Reduction (Max. 3 Points)

Avoid atleast 50% of the waste generated during construction being sent to landfills and incinerators. Calculate percentage using either weight or volume. Points are awarded as below.

Points for Waste Diversion

Percentage of Waste Diverted

Points

> 50% > 75 % > 95%

123


Submit records tabulating the total waste material generated and the quantities which were diverted from landfills.


Collect all construction debris generated on site. Segregate these waste based on their utility. Examine means of sending such waste to manufacturing units which use them as raw materials. Typical construction debris in residential projects could be broken bricks, steel bars, broken tiles, glass, wood waste, paint cans, cement bags, packing materials etc.,

64


Solid Waste Management, Post Occupancy


Goal:

To ensure effective solid waste management in the building, post occupancy.

Compliance Options:

Install onsite solid waste treatment technology for treating all organic wastes. The output from such systems like manure, power, etc should be reused insitu.


Submit design details of the waste treatment system installed. Submit cut sheets from manufacturers and provide purchase invoice. Also provide photographs.


Calculate the quantum of organic waste generated in the building. Design the waste treatment plant with suitable capacity to efficiently manage the wastes and recover resources. Typical technologies recognised are digesters, gasifiers, vermicomposting etc.

65


Materials with Recycled Content


Goal:

To encourage the use of products which contain recycled materials to reduce environmental impacts associated with the use of virgin materials.

Compliance Options:

Use materials with recycled content such that the total recycled content constitutes atleast 5% of the total value of the materials used in the project. Points are awarded as below.

Points for Recycled Content

Percentage of Recycled content

Points

> 5% > 10 %

12


Provide details on all materials used in the project with the material cost. Specify recycled content in the materials used. Submit letters from manufacturers specifying the recycled content.


Survey the materials with recycled content and locate such local suppliers. Some of the materials with recycled content are Fly ash blocks, Tiles, Steel, Glass, Cement, False Ceiling, Aluminium and Composite Wood.

66


Rapidly Renewable Materials

MR Credit 4.0 Points: 1 Not applicable for multi-dwelling units

Goal:

Maximise the use of materials which are rapidly renewable.

Compliance Options:

Use rapidly renewable building materials and products (made from plants that are typically harvested within a ten-year cycle or shorter) to an extent of 2% of the cost of the building materials.


Provide details on the use of rapidly renewable materials in the building. Provide a calculation on the area of such materials used. Also provide the percentage of carpet area that rapidly renewable materials constitute.


Survey the applications of rapidly renewable materials in the building design. Consider materials such as bamboo, wool, cotton insulation, agrifiber, linoleum, wheat board, strawboard and cork. During construction, ensure that the specified rapidly renewable materials are installed.

67


Regional Materials


Goal:

Encourage the use of building materials available regionally thereby minimising the associated environmental impacts.

Compliance Options:

Ensure atleast 50% of the total building materials by cost used in the building should have been manufactured within a radius of 500 Km. Points are awarded as follows:

Points for Regional Materials

Percentage of regional materials

Points

> 50 % > 75%

12


Provide calculations demonstrating that the project uses the required percentage of local materials in terms of cost. Provide letters from the manufacturers/ vendors indicating the distance from the place of manufacture to the project site.


Set a project goal for utilization of locally sourced materials from identified suppliers. During construction, ensure that the specified local materials are installed and quantify the total percentage of local materials installed.

68


Material Reuse

MR Credit 6.0 Points: 2 Not applicable for multi-dwelling units

Goal:

Encourage the use of reused building materials and products to reduce the demand for virgin materials thereby minimizing the impacts associated with extraction and processing of virgin materials.

Compliance Options:

Ensure atleast 5% of the total building materials by cost used in the building is salvaged, refurbished or reused. Points are awarded as follows:

Points for Material Reuse

Percentage of Materials Reused

Points

> 5 % > 10%

12


Provide calculations demonstrating that the project uses the required percentage of reused materials in terms of cost. Provide sources of such reused material.


Identify opportunities to incorporate salvaged materials into building design and research potential material suppliers. Consider salvaged materials such as flooring, paneling, doors, frames, furniture, brick etc.

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Wood Based Building Materials and Furniture


Goal:

To minimise the usage of virgin wood thereby encouraging responsible forest management.

Compliance Options:

Ensure atleast 50% (by cost) of all new wood used in the building will be FSC (Forest Stewardship Council) certified or the local Forest Department certified wood. Points are awarded as below.

Points for Use of Composite Wood

Percentage ofFSC/ Forest Dept

certified wood

Points

> 50 % > 75%

12


Provide details showing the total cost of wood based products procured for the building. Provide details on the FSC/ Forest Department certified wood used. Also show the percentage calculations of the certified wood used to the total cost of new wood used for doors, windows, furniture etc.,


Ascertain wood based applications in the home. Substitute the use of virgin wood with FSC or Forest Department Certified wood.

70

INDOOR AIR QUALITY

Indoor Air Quality (IAQ)


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INDOOR AIR QUALITY

Fresh Air Ventilation – Centrally Air Conditioned Systems

Mandatory Requirement 1 – Option A

Goal:

To avoid indoor pollutants affecting indoor air quality by providing adequate outdoor air ventilation.

Compliance Options:

Design and install a whole building ventilation system that complies with ASHRAE Standard 62.2-2007.

ASHRAE 62.2-2007 Compliance Options for minimum whole house ventilation air flow rates are shown in Table IAQ 1.1.

Table IAQ 1.1

Minimum Required Ventilation Air Flow (CFM) Compliance Options


Provide details on the building ventilation design giving specific information on fresh air intake volumes.

Number of Bedrooms Conditioned Floor Area (Sq.ft)

0 - 1 2 - 3 4 - 5 6 - 7 > 7

< 1500

1501 – 3000

3001 – 4500

4501 – 6000

6001 – 7500

> 7500

30

45

60

75

90

105

45

60

75

90

105

120

60

75

90

105

120

135

75

90

105

120

135

150

90

105

120

135

150

165

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INDOOR AIR QUALITY


Study the possible methods of taking in fresh air into the air conditioned spaces. Also take into consideration the quality of the fresh air itself and appropriately consider treatment methods. Taking in fresh air may result in higher energy consumption; however suitable pre-cooling technologies of fresh air can be envisaged during design.

73

INDOOR AIR QUALITY

Fresh Air Ventilation – Non-Air conditioned homes

Mandatory Requirement 1 – Option B

Goal:


Compliance Options:

All naturally ventilated regularly occupied spaces shall be within 15 feet of operable windows or doors and the openable area (window area) must be atleast 15% of the net occupiable floor area. For kitchens and bathrooms provide openable area (window area) equal to or greater than 5% of the net occupiable floor area.


Provide drawings and calculations showing that the mandatory requirement is met.


Having adequate window openings will help in bringing in fresh air into the building, thereby ensuring good air quality. The approach would be to have large openings on atleast two different directions so as to allow cross-ventilation.

74

INDOOR AIR QUALITY

Tobacco Smoke Control

Mandatory Requirement 2 Goal:

Minimise exposure of non smokers to the adverse health impacts arising due to passive smoking, post occupancy.

Compliance Options:

Smoking should be prohibited in the common areas of the building.

AND

Locate specifically assigned outdoor smoking areas at a minimum of 25 feet from entrance doors, window openings and outdoor air intakes.

Note: In dwelling unit(s) where 25 feet clearance from possible areas of smoke ingress is not possible, assigning outdoor smoking areas will not meet the requirement.


Provide details on how the building complies with the requirement. Also provide details on how this would be implemented and identify the agency responsible to ensure compliance.


Prohibit smoking in common areas like corridors, lobby, lifts etc. Design the building to eliminate or minimise tobacco smoke pollution amongst the dwelling units. Occupant guidelines can specify that smokers should ensure that tobacco smoke does not enter common areas or other dwelling units. Smoking should be encouraged only in the outdoor designated smoking areas. Signages can be placed at several places in the building campus to educate occupants and visitors.

75

INDOOR AIR QUALITY

Day Light For 50% Spaces


Goal:

To ensure connectivity between the interior and the exterior environment, by providing good day lighting.

Compliance Options:

Achieve a minimum average daylight factor of 2% for 50% of the total floor area of allregularly occupied spaces which include kitchens, living rooms, dining rooms and study rooms.

Average Daylight factor can be calculated using the formula given below:

Daylight = Window Area [SF] x Window x Actual Visible transmittance x Height Factor Factor Floor Area [SF] Geometry Minimum Visible transmittance

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INDOOR AIR QUALITY

Daylight Design Criteria

Source: LEED India NC


Provide calculation of daylight for each occupied area like living rooms, bed rooms, dinning areas, study areas, kitchens etc., Sum up all areas which achieve 2% or higher day light factor. This aggregate area as a percentage of the total livable area should be more than 50%. Areas exempted are bathrooms, storage space, corridors etc.,


Ensure that daylighting is considered at the design by appropriate orientation. The orientation of the building can be such that maximum daylighting to all the spaces is achieved for most part of the day.

77

INDOOR AIR QUALITY

Exhaust Systems

IAQ Credit 1.0 Points: 2

Goal:

To ensure that kitchens and bathrooms are better ventilated to improve indoor environment.

Compliance Options:

Design exhaust systems in bathrooms and kitchen as per the requirements highlighted in the table below:

ANDDesign exhaust systems to remove polluted indoor air to the exterior (i.e. exhaust outlets into common areas are not allowed).

Minimum Intermittent Exhaust Flow Requirements

Location Minimum Airflow Minimum Airflow

Kitchen

Bathroom

(for < 100sq.ft)

(for < 50sq.ft)

100 cfm

50 cfm

For > 100sq.ft proportionally

increase air flow

For > 50sq.ft proportionally

increase air flow

Note: For kitchens, kitchen range vent hoods which meet the above air flows are also acceptable


Provide the description and specifications of the exhaust system design.


Exhaust from bathrooms and kitchens are very vital in preserving the indoor air quality within homes. It is not just adequate to install exhaust fans, but sizing these systems to purge out sufficient quantities of indoor air will determine the performance and thereby the indoor air environment.

78

INDOOR AIR QUALITY

Improved Fresh Air Ventilation – For Air Conditioned Homes -(Option A)


Goal:


Compliance Options:

Design and install a whole building ventilation system that exceeds the minimum ASHRAE Standard 62.2-2007 by 25%. Refer the table below for minimum ASHRAE standards.

Minimum Required Ventilation Air Flow (CFM) Compliance Options


Provide details on the building ventilation design giving specific information on the fresh air intake volumes. Provide manufacturers cut sheets wherever necessary.


Study the possible methods of taking in fresh air into the air conditioned spaces. Also take into consideration the quality of the fresh air itself and appropriately consider treatment methods. Taking in fresh air may result in higher energy consumption; however suitable pre-cooling technologies of fresh air can be envisaged during design.

Number of Bedrooms Conditioned Floor Area (Sq.ft)

0 - 1 2 - 3 4 - 5 6 - 7 > 7

< 1500

1501 – 3000

3001 – 4500

4501 – 6000

6001 – 7500

> 7500

30

45

60

75

90

105

45

60

75

90

105

120

60

75

90

105

120

135

75

90

105

120

135

150

90

105

120

135

150

165

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INDOOR AIR QUALITY

Improved Fresh Air Ventilation for Non-Air conditioned homes - (Option B)


Goal:

Ensure that occupants are exposed to increased outdoor air ventilation thereby enhancing indoor air quality.

Compliance Options:

Basic Outdoor Air Ventilation

All naturally ventilated regularly occupied spaces shall be within 15 feet of operable windows or doors and the openable area (window area) must be atleast 25% of the net occupiable floor area. For kitchens and bathrooms provide openable area (window area) which is equal to or more than 10% of the net occupiable floor area.


Provide drawings and calculations showing that the mandatory requirement is met.


Having adequate window openings will help in bringing in fresh air into the building, thereby ensuring good air quality. The approach would be to have large openings on atleast two different directions so as to allow cross-ventilation.

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INDOOR AIR QUALITY

Low VOC Materials


Goal:

To encourage the use of materials with low emissions so as to reduce adverse health impacts for building occupants.

Compliance Options:

Use paints with low or no VOC content to an extent of 100% of interior wall surface area. (1 point)

ANDFor other VOC emitting materials used within the interiors ensure that the VOC content does not exceed the limits as specified in the table below. (1 point)

VOC Limits for Materials

Type of material VOC Limit Paints:Non flat paints 150 g/L Flat (Mat) paints Anti corrosive/ anti rust paints

Adhesives:Wood flooring Adhesive Tile adhesives Indoor carpet adhesives

Varnish

Wood

50 g/L 250 g/L

30 g/L 100 g/L 350 g/L

65 g/L

50 g/L


Provide letter from the manufacturer/ manufacturer brochures indicating the VOC limit of the paints used OR Provide purchase invoices and provide supporting photographs of paint containers specifying VOC content.

81

INDOOR AIR QUALITY


Develop a project outline specification and include low or no VOC materials as a criterion for interior material selection. List down all possible interior materials which can have high VOC content. Research and specify no or low VOC materials based on durability, performance and environmental characteristics

82

INDOOR AIR QUALITY

Carpets

IAQ Credit 4.0 Points: 1 Not applicable for multi-dwelling units

Goal:

To encourage the use of carpets with low emissions so as to reduce adverse health impacts for building occupants.

Compliance Options:

Use CRI certified carpets for 5% of the carpet area

OR

Use carpets made of naturally available materials like coir, wool etc. for 5% of the carpet area.


Provide CRI certificate or provide photographs of carpets used in the building. State the materials used and its environmental features


Prepare a list of all carpet requirements in the building and also conduct a market survey of the materials available and their eco friendly features. In many places, carpets are made of naturally available materials which do not require any adhesives while installing.

83

INDOOR AIR QUALITY

Building Flush Out


Goal:

To avoid occupant’s exposure to indoor airborne contaminants before occupying the premises.

Compliance Options:

Before the building is occupied and after paints, adhesives and sealants have been used, a building flush out needs to be carried out for ten days by keeping all windows open.

OR

If the building prefers to carry out the flush out using forced ventilation systems, the flush out can be carried out for 5 days.


Provide a narrative describing the flush out procedure followed.


Flush out needs to be carried out just before the occupancy. Once the home is ready including the interiors, flushing will be effective in driving away the pollutants in the building materials.

84

INDOOR AIR QUALITY

Day Light For Living Spaces


Goal:

To ensure connectivity between the interior and the exterior environment, by providing good day lighting.

Compliance Options:

Achieve a minimum average daylight factor of 2% for 75% of the total floor area of allregularly occupied spaces which include kitchens, living rooms, dining rooms and study rooms.

Points for Day Light for Living Spaces

Percentage of Lighting Points > 75% > 90%

12

Average Daylight factor can be calculated using the formula given below:

Daylight = Window Area [SF] x Window x Actual Visible transmittance x Height Factor Factor Floor Area [SF] Geometry Minimum Visible transmittance

85

INDOOR AIR QUALITY

Daylight Design Criteria

Source: LEED India NC


Provide calculation of daylight for each occupied area like living rooms, bed rooms, dinning areas, study areas, kitchens etc., Sum up all areas which achieve 2% or higher day light factor. This aggregate area as a percentage of the total livable area should be more than 75%. Areas exempted are bathrooms, storage space, corridors etc.,


Ensure that daylighting is considered at the design by appropriate orientation. The orientation of the building can be such that maximum daylighting to all the spaces is achieved for most part of the day.

86

INDOOR AIR QUALITY

Design to Enhance Cross Ventilation


Goal:

To encourage home design which have adequate cross ventilation thereby providing a healthy environment.

Compliance Options:

Design the building to ensure that distance between each dwelling unit meets the following criteria:

¶ A minimum of 10 feet wall to wall distance between two dwelling units¶ A minimum of 8 feet corridor width separating dwelling units


Provide floor plans showing distance between dwelling units and common corridor width.


Adequate spaces between dwelling units is important to ensure cross ventilation. Many a time this aspect is neglected which can lead to poor indoor environment both in terms of indoor air and the day lighting aspect. Narrow corridors can impact the indoor environment as well.

87

INNOVATION AND DESIGN

Innovation and Design (ID)

(Maximum Points: 4)

88


Innovation in Design

ID Credit 1 Points: 4

Goal:

To provide design teams and projects the opportunity to be awarded points for exceptional performance above requirements set by the IGBC Green Homes Rating System and/or innovative performance in Green Building categories not specifically addressed by the IGBC Green Homes Rating System.

Compliance Options:

Some of the points that can be earned under this credit are as follows

Credit 1.1: Innovation in Design

Identify the intent of the proposed innovation credit, the proposed requirement for compliance, and the proposed documentation to demonstrate compliance, and the design approach used to meet the required elements.


Same as credit 1.1


Same as credit 1.1


Provide photographs/ drawings/ manufacturers cut sheets whichever is applicable


The following can be considered for credit points under innovation:

× Exemplary performance under any of the credits.

× Strategies or measures not covered by IGBC Green Homes such as

o Adoption of passive architecture techniques

o Green education etc

o Eco friendly housekeeping chemicals

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IGBC Accredited Professional

ID Credit 2 Points: 1

Goal:

To support and encourage the involvement of an IGBC AP in the green home building project.

Compliance Options:

Atleast one principal participant of the project team shall be an IGBC AP.


Provide the IGBC AP certificate.


Educate the project team members about Green Home design & construction and application of the IGBC Green Homes Rating System at the design stage of the project.

90

GLOSSARY

Abbreviations

ARI

Air-conditioning and Refrigeration Institute

ASHRAE

The American Society of Heating, Refrigerating and Air-conditioning Engineers

BEE

Bureau of Energy Efficiency

CFM

Cubic Feet per Minute

COP

Coefficient of Performance

CRI

Carpet and Rug Institute

ECBC

Energy Conservation Building Code

EER

Energy Efficiency Ratio

FSC

Forest Stewardship Council

HVAC

Heating Ventilation and Air-conditioning

IPLV

Integrated Part Load Value

LPD

Lighting Power Density

LPF

Liters per Flush

LPM

Liters per Minute

91

GLOSSARY

NA

Not Applicable

NBC

National Building Code

PTHP

Packaged Terminal Heat Pumps

SHGC

Solar Heat Gain Coefficient

SRI

Solar Reflective Index

VOC

Volatile Organic Compound

92

GLOSSARY

References

Alternative fuels data centre www.afdc.doe.gov

BEE star rated Air conditioning units http://www.bee-india.nic.in/

BEE star rated Refrigerators http://www.bee-india.nic.in/

BREEAM – Code for Sustainable Housing

Climatic zone map of India http://www.bee-india.nic.in/

Forest Stewardship Council guidelineswww.fscus.org

Green Star Rating System (Green Building Council of Australia)

LEED India NC

LEED for Homes Rating System (USGBC)

Minimum ventilation requirements as per ASHRAE 62.2-2007

Minimum efficiency requirements for Centrally Air Conditioned Residential Buildings ASHRAE 90.2-2004

Minimum energy efficiency levels – ECBC

NBC standards for Erosion & Sedimentation control

Soil and water conservation www.swcs.org

US Green Building Council www.usgbc.org

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Tel : + 91 40 23112971-74,Fax: 040-23112837 Email: [email protected]

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IGBC Green Homes

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IGBC Green Homes