Green Sri Lanka Rating System

SL®

GREEN

RATING SYSTEM

FOR BUIL BUI LT ENVIRONMENT

GREEN BUILDING COUNCIL SRI LANKA DECEMBER 2010

GREENSL® RATING SYSTEM FOR BUILT ENVIRONMENT December 2010 Green Building Council Sri Lanka

First Printed Printed - December 2010

ISBN ………………….

Published by Green Building Council Sri Lanka 22, Station Lane, Nugegoda, Sri Lanka Tel: +94112825827 +94112825827,, Fax: +94112825827 +94112825827 Email: [email protected]

Cover Page The background background of the cover page is an image from the “Lunuganga “Lunuganga Estate” which was the Country Home of Geoffrey Bawa who is regarded as one of the most important and influential influential architects of the twentieth century. century. He produced “Sustainable “Sustainable Architecture” Architecture” long before the term was called. His creation, the the “Kandalama “Kandalama Hotel” is one of the first LEED Bronze rated hotels in the world (rated in year 2000). The image depicts a “Carbon Zero” landscape design of Bawa.

ii

PREFACE FROM GBCSL

The natural environment together with our economy, health and productivity are immensely affected by the performance of built environments. Built environment’s lifespan contribution to global CO2 emissions is forty per cent - the largest single contributor to global warming (UNEP).The building sector is responsible for more than one third of total energy use. Thus efficient design, construction and maintenance of our built environment are the responsibility of all stakeholders. SL®

The GREEN

Rating System of Green Building Council Sri Lanka

(GBCSL) offers the valuable opportunity to respond positively to the greatest challenge of the day. It is a voluntary scheme where designers, builders and owners can achieve recognition for their valuable interest to build green. History shows how our forefathers built great cities, irrigation systems and religious monuments that coexisted with nature and yet provided a sustainable economy and lifestyle to the citizens. This initiative of the GBCSL is one humble step towards taking our society to that glorious past which we are still proud of as Sri Lankans. We believe our effort will make a zero energy built environment by the year 2050.

GBCSL 22, Station Lane Nugegoda Sri Lanka Tel: +94112825827 Fax: +94112825827 Email: [email protected]

iii

FOREWORD

Sri Lanka, like other countries around the world, is facing an immense challenge, to create sustainable buildings for the future. Buildings are the major source of demand for energy and construction materials produce significant amount of by-product greenhouse gases. Studies show that the building sector accounts for over 40 percent of world’s energy requirements and a large percentage of the present energy consumption and carbon dioxide generation could be saved by applying certification standards such as the one presented in this document, to new and refurbished buildings. The public’s perception of the importance of sustainable green design is dramatically increasing and the demand has followed. Developers of buildings of all types (and the consultants involved in design of those buildings) now recognise that sustainable design must be used because it adds value to their investment. Design for the sake of design alone is no longer an option. Design for higher performance is our pathway to a better future. A green building is designed to use less energy and water, improved indoor air quality and to reduce the life-cycle environmental impacts of the materials used. This well-qualified committee led by Mr. Shiromal Fernando has worked very hard to produce the green rating system for Sri Lanka, with the main aim of fundamentally changing the built environment by creating energy-efficient, healthy, productive buildings that reduce or minimise the significant impacts of buildings on the environment. This is achieved through the allocation of different credits to the selection of a proper site, better and efficient design, material selection, construction, operation, maintenance, removal, and possible reuse, etc practice

Although the rating system is

based on world’s best

for Green Buildings, the committee has very efficiently

incorporated local conditions. A local certification system will be definitely less expensive and will attract more local developers. iv

A

number of independent studies confirm that buildings certified by green building councils around the world can consume up to 85 per cent less energy and 60 per cent less potable water, and send 69 per cent less waste to landfill than non-certified buildings. This rating system for Sri Lanka provides a rigorous road map to building green and there is no doubt that it will receive support from both public and private sectors and become the rating tool of choice.

Prof. Priyan Mendis Chairman, GBCSL

v

COPYRIGHT

Copyright © 2010 by the Green Building Council Sri Lanka (GBCSL). All rights reserved. The Green Building Council Sri Lanka (GBCSL) authorises you to view SL®

the GREEN

Rating System for Built Environment, 2010 for your

individual use. In exchange for this authorisation, you agree to retain all copyright and other proprietary notices contained in the original SL®

Rating System. You also agree not to sell or modify the

SL®

Rating System or to reproduce, display or distribute the

SL®

Rating System in any way for any public or commercial

GREEN GREEN GREEN

purpose, including display on a website or in a networked environment. SL®

Unauthorised use of the GREEN

Rating System violates copyright,

trademark and other laws and is prohibited. Note that the text of the central and state codes, regulations, voluntary SL®

standards, etc., reproduced in the GREEN

Rating System for Built

Environments, 2010 is either used under license to the Green Building Council Sri Lanka or, in some instances, is in the public domain. All other text, graphics, layout and other elements of content contained in the GREEN

SL®

Rating System for Built Environment, 2010 are owned

by the Green Building Council Sri Lanka and are protected by copyright under both Sri Lankan and foreign laws.

DISCLAIMER

SL®

None of the parties involved in the funding or creation of the GREEN

Rating System for Built Environment, 2010, including the Green Building Council Sri Lanka, its members, its partners or the Sri Lankan government make any warranty (express or implied) or assume any liability or responsibility, to you or any third parties for the accuracy, vi

completeness or use of, or reliance on, any information contained in the SL®

GREEN

Rating System for Built Environment, 2010, 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 Green Building Council Sri Lanka, its members, its partners and the Sri Lankan 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, the SL®

GREEN

Rating System for Built Environment, 2010.

Green Building Council Sri Lanka 22, Station Lane Nugegoda Sri Lanka

TRADEMARK

GREEN® is a registered trademark of the Green Building Council Sri Lanka.

vii

ACKNOWLEDGEMENTS

SL®

The GREEN

Rating System for Built Environment, 20101 has been

made possible only through the efforts of many dedicated volunteers, committee members and others in the GBCSL community. The drafting was managed and implemented by GBCSL staff and consultants and included with reviews and suggestions by the GBCSL Core Committee and many members. Expert guidance was provided by the Chairmen Prof. Priyan Mendis, Dr. Ranjith Gammanpila of Melbourne University and Director Prof. Thishan Jayasinghe of University of Moratuwa. GBCSL acknowledge the support of Eng. Kasun Shanaka, Ms. Dayani Nayantha, Eng. K.M.P. Perera, Eng. H.A.A.P. Peiris, Eng. P.S. Panditharathne and Eng. Tharaka Gunawardena in preparing the draft. A special word of thanks is to Building economic department, University of Moratuwa for sharing their work with the GBCSL technical team. We mention with gratitude the technical committee members for the expert advice and reviews given to the draft;

Technical Committee members:

Prof. Priyan Mendis (Chairman) Dept. of Civil and Environmental Engineering, University of Melbourne Australia

Prof. Thishan Jayasinghe (Director) Head of the Dept., Dept. of Civil Engineering, University of Moratuwa

Eng. WJB Shiromal Fernando (Vice Chairman) Former

(Hon.)

Secretary,

Engineers, Sri Lanka.

viii

Society

of

Structural

Dr. L N Senaweera (Vice Chairman) Director General, Sri Lanka Standards Institute

Prof. R A Attalage (Director) Dept.

of

Mechanical

Engineering,

University

of

Moratuwa

Prof. Ranjith Dissanayake (Director) Dept. of Civil Engineering, University of Peradeniya

Dr. Lochana Gunarathne (Director) President, Academy of Sciences Sri Lanka

Dr. Ranjith Gammampila (Director) Dept. of Civil and Environmental Engineering, University of Melbourne Australia

Prof. Chithra Wedikkara (Director) President, Institute of Quantity Surveyors of Sri Lanka

Prof. Rameez Deen Department

of

Building

Economics,

University

of

Moratuwa

Dr. Chintha Jayasinghe Dept. of Civil Engineering, University of Moratuwa

Dr. Shiromi Karunarathne Head

of

the

Dept.,

Dept

of

Earth

Resources

Engineering, University of Moratuwa

Dr. Janaka Wijesundara Dept. of Architecture, University of Moratuwa

Archt. Narein Perera Dept. of Architecture, University of Moratuwa

Dr. Ayantha Gomes Dept. of Civil and Environmental Engineering, University of Ruhuna

ix

GREEN SL® RATING SYSTEM FOR BUILT ENVIRONMENT CHECKLIST 100 Total Points Available

Criteria

Points

1.0 MANAGEMENT

4 Total Points Available

Prerequisite 1

Green Building Accredited Professional

Required

Prerequisite 2

Commissioning Clauses

Required

Credit 1.1

Building Tuning [1 Point] Credit 1.1.1 Optimizing occupant comfort and Energy Efficiency

Credit 1.2

1.2 Building User’s Guide [1 Point] Credit 1.2.1 Building User’s Guide

Credit 1.3

1 Point

1 Point

1.3 Environmental Management [2Points] Credit 1.3.1 Environmental Management Plan

1 Point

Credit 1.3.2 Environment Management System (Complying with ISO 14001)

1 Point

2.0 SUSTAINABLE SITES


Prerequisite 1

Erosion and Sedimentation Control

Required

Credit 2.1

Site Selection

5 Points

Credit 2.2

Development Density and Community Connectivity

4 Points

Credit 2.3

Brownfield Redevelopment

1 Point

x

Credit 2.4

Credit 2.5

Alternative Transportation [3 Points] C redit 2.4.1 Public Transport ation Access

2 Points

Credit 2.4.2 Parking Capacity

1 Point

Reduced Site Disturbance [4 Points] Credit 2.6.1 Protect or Restore Habitat

2 Points

Credit 2.6.2 Development Footprint

2 Points

Credit 2.6

Storm Water Design, Quantity Control - I

3 Points

Credit 2.7

Storm Water Design, Quantity Control - II

2 Points

Credit 2.8

Heat Island Effect, Non – Roof

1 Point

Credit 2.9

Heat Island Effect, Roof

1 Point

Credit 2.10

Light Pollution Reduction

1 Point

3.0 WATER EFFICIENCY Credit 3.1


Water Efficient Landscaping [1-4 Points] Credit 3.1.1 Reduce Potable W ater

2 Points

Consumption Credit 3.1.2 Eliminate Potable Water

2 Points

Consumption Credit 3.2

Water Efficiency in Air-conditioning System

Credit 3.3

Innovative Wastewater Technologies [1-5

1 Point

Points] Credit 3.3.1 Reduce Potable Water Use or

2 Points

Treat Wastewater

xi

Credit 3.3

Innovative Wastewater Technologies [1-5 Points] Credit 3.3.1 Reduce Potable W ater

2 Points

Use or Treat Wastewater Credit 3.3.2 Harvested Rainwater Credit 3.4

3.4 Water Use Reduction

4.0 ENERGY & ATMOSPHERE Prerequisite 1

3 Points 1-4 Points


Fundamental Building Systems

Required

Commissioning Prerequisite 2

Minimum Energy Performance

Required

Prerequisite 3

CFC Reduction in HVAC&R Equipment

Required

Credit 4.1

Optimize Energy Performance

1-10 Points

Credit 4.2

Renewable Energy

7 Points

Credit 4.3

Additional Commissioning

1 Point

Credit 4.4

Ozone Depletion

1 Point

Credit 4.5

Measurement & Verifications

1 Point

Credit 4.6

Green Power

1 Point

5.0 MATERIALS & RESOURCES


Prerequisite 1

Storage & Collection of Recyclables

Credit 5.1

Building Reuse [1-3 Points] Credit 5.1.1 Maintaining 50% of Existing Building Structure and Shell

xii

Required

1 Point

Credit 5.1.2 Maintaining 75% of Existing

2 Points

Building Structure and Shell Credit 5.1.3 Maintaining 75% of Existing

3 Points

Building Structure and Shell and 25% of Nonshell Areas Credit 5.2

Credit 5.3

Credit 5.4

Construction Waste Management [1-2 Points] Credit 5.2.1 For 50% Recycling

1 Point

Credit 5.2.2 For 75% Recycling

2 Points

Resource Reuse [1-2 Points] C redit 5.3.1 For at least 5 % of t he Building

1 Point

Credit 5.3.2 For at least 10% of the Building

2 Points

Recycled Content [1-2 Points] Credit 5.4.1 For at least 10% of Total Value

1 Point

of Materials Credit 5.4.2 For at least 20% of Total Value

1 Point

of Materials Credit 5.5

Local / Regional Materials [1-3 Points] Credit 5.5.1 For a Minimum of 20% Usage

1 Point

Credit 5.5.2 For a Minimum of 50% Usage

3 Points

Credit 5.6

Rapidly Renewable Materials

1 Point

Credit 5.7

Certified Wood

1 Point

xiii

6.0 INDOOR ENVIRONMENTAL QUALITY


Prerequisite 1

Minimum IAQ Performance

Required

Prerequisite 2

Smoke (ETS) Control

Required

Credit 6.1

Outdoor Air Delivery Monitoring

1 Point

Credit 6.2

Increased Ventilation

1 Point

Credit 6.3

Construction IAQ Management Plan

[1

Point] Credit 6.3.1 Construction IAQ

1 Point

Management Plan Before and After Construction Credit 6.4

Low - Emitting Materials [1-3 Points] Credit 6.4.1 Paints and Coatings

1 Point

Credit 6.4.2 Carpet Systems

1 Point

Credit 6.4.3 Composite Wood and

1 Point

Agrifiber Products Credit 6.5

Indoor Chemical & Pollutant Source Control

Credit 6.6

Controllability of Systems [1-2 Points ]

1 Point

Credit 6.6.1 Lighting Controls

1 Point

Credit 6.6.2 Comfort Controls

1 Point

Credit 6.7

Thermal Comfort, Design

1 Point

Credit 6.8

Thermal Comfort, Verification

1 Point

xiv

Credit 6.9

Daylight & Views [2 Points] Credit 6.9.1 Daylight

1 Point

Credit 6.9.2 Views

1 Point

7.0 INNOVATION & DESIGN PROCESS Credit 7.1


Innovation in Design [1-4 Points] Credit 7.1.1 Innovation in Design

1-2 Points

Credit 7.1.2 Exemplary Performance

1-2 Points

8.0 SOCIAL & CULTURAL AWARENESS


Prerequisite 1

Archeological Sites & Heritage Buildings

Required

Credit 8.1

Social Wellbeing, Public Health & Safety

1-2 Points

Credit 8.2

Cultural Identity

1-2 Points

Ratings given will be as follows; Certified 40–49 points Silver 50–59 points Gold 60–69 points Platinum 70 points and above

xv

TABLE OF CONTENTS PREFACE FROM GBCSL ....................................................................iii FOREWORD........................................................................................ iv COPYRIGHT........................................................................................ vi DISCLAIMER ....................................................................................... vi TRADEMARK ......................................................................................vii ACKNOWLEDGEMENTS ................................................................... viii INTRODUCTION TO GREEN BUILDING COUNCIL OF SRI LANKA (GBCSL) ............................................................................................. xix VISION OF GBCSL........................................................................... xxiii MISSION OF GBCSL........................................................................ xxiii WORLD EMPHASIS ON THE GREEN BUILDING CONCEPT ......... xxiv GREEN RATING SYSTEM FOR BUILT ENVIRONMENTS ............ xxviii BACKGROUND TO THE GREEN RATING SYSTEM ........................xxx 1.0 MANAGEMENT .............................................................................. 3 Prerequisite 1 – Green Building Accredited Professional ................... 3 Prerequisite 2 – Commissioning Clauses........................................... 5 Credit 1.1 – Building Tuning............................................................... 8 Credit 1.2 – Building User’s Guide ................................................... 10 Credit 1.3 – Environmental Management ......................................... 12 2.0 SUSTAINABLE SITES .................................................................. 15 Prerequisite 1 – Erosion and Sedimentation Control........................ 15 Credit 2.1 – Site Selection ............................................................... 16 Credit 2.2 – Development Density and Community Connectivity ..... 18 Credit 2.3 – Brownfield Redevelopment........................................... 20 xvi

Credit 2.4 – Alternative Transportation............................................. 21 Credit 2.5 – Reduced Site Disturbance ............................................ 23 Credit 2.6 – Storm Water Design, Quantity Control - I...................... 25 Credit 2.7 – Storm Water Design, Quantity Control - II..................... 27 Credit 2.8 – Heat Island Effect, Non - Roof ...................................... 29 Credit 2.9 – Heat Island Effect, Roof................................................ 31 Credit 2.10 – Light Pollution Reduction ............................................ 33 3.0 WATER EFFICIENCY................................................................... 39 Credit 3.1 – Water Efficient Landscaping ......................................... 39 Credit 3.2 – Water Efficiency in Air-conditioning System.................. 41 Credit 3.3 – Innovative Wastewater Technologies ........................... 42 Credit 3.4 – Water Use Reduction ................................................... 44 4.0 ENERGY & ATMOSPHERE.......................................................... 49 Prerequisite 1 – Fundamental Building Systems Commissioning..... 49 Prerequisite 2 – Minimum Energy Performance............................... 51 Prerequisite 3 – CFC Reduction in HVAC&R Equipment ................. 53 Credit 4.1 – Optimize Energy Performance...................................... 54 Credit 4.2 – Renewable Energy ....................................................... 59 Credit 4.6 – Additional Commissioning ............................................ 61 Credit 4.4 – Ozone Depletion........................................................... 63 Credit 4.5 – Measurement & Verifications........................................ 64 Credit 4.6 – Green Power ................................................................ 66 5.0 MATERIALS & RESOURCES ....................................................... 69 Prerequisite 1 – Storage & Collection of Recyclables ...................... 69 Credit 5.1 – Building Reuse ............................................................. 70

xvii

Credit 5.2 – Construction Waste Management................................. 72 Credit 5.3 Resource Reuse.............................................................. 74 Credit 5.4 – Recycled Content ......................................................... 76 Credit 5.5 – Local / Regional Materials ............................................ 78 Credit 5.6 – Rapidly Renewable Materials ....................................... 80 Credit 5.7 – Certified Wood.............................................................. 81 6.0 INDOOR ENVIRONMENTAL QUALITY ........................................ 85 Prerequisite 1 – Minimum IAQ Performance .................................... 85 Prerequisite 2 – Smoke (ETS) Control ............................................. 86 Credit 6.1 – Outdoor Air Delivery Monitoring.................................... 89 Credit 6.2 – Increased Ventilation .................................................... 91 Credit 6.3 – Construction IAQ Management Plan ............................ 94 Credit 6.4 – Low - Emitting Materials ............................................... 96 Credit 6.5 – Indoor Chemical & Pollutant Source Control............... 101 Credit 6.6 – Controllability of Systems ........................................... 103 Credit 6.7 – Thermal Comfort, Design ........................................... 106 Credit 6.8 – Thermal Comfort, Verification ..................................... 107 Credit 6.9 – Daylight & Views ........................................................ 108 7.0 INNOVATION & DESIGN PROCESS ......................................... 111 7.1 Innovation in Design ................................................................ 111 8.0 SOCIAL & CULTURAL AWARENESS ........................................ 115 8.1 Archeological Sites & Heritage Buildings – Prerequisite 1........ 115 8.2 Social Wellbeing, Public Health & Safety ................................. 117 8.3 Cultural Identity ........................................................................ 119 REFERENCES ................................................................................. 122

xviii

INTRODUCTION TO GREEN BUILDING COUNCIL OF SRI LANKA (GBCSL)

The concept of “Green Buildings” aims at increasing the efficiency with which buildings use resources such as energy, water and materials while reducing the impact of buildings on human health and its surrounding environment during its lifecycle, through better design, construction, operation, maintenance and removal and recycling of waste. Going green is no strange concept to us Sri Lankans having a proud history of great civilisations with structures and monuments together with irrigation systems that impress the entire world even today. The balanced lifestyle and coexistence with nature, which it provided to the human society is the ultimate goal of GBCSL’s endeavour. The Green Building Council of Sri Lanka (GBCSL) came into existence as a result of an emerging trend towards applying the greener concepts for built environment. GBCSL launched in November 2009 as a non-profit organization that is committed to developing a sustainable building industry for Sri Lanka by encouraging the adoption of green building practices. It is uniquely supported by both industry and government institutions across the country. The GBCSL is now granted with “Emerging Member Status” by the World Green Building Council , which represents about 80 countries ranging from developed to developing nations world-wide. Prof. Priyan Mendis lead the GBCSL as the chairperson while the board comprise of expert academic advisors and industry agents.

xix

Board Members

Prof. Priyan Mendis (Chairman) Dept. of Civil and Environmental Engineering, University of Melbourne Australia

Archt. Chandana Edirisuriya (Vice Chairman) President, Sri Lanka Institute of Architects

Eng. WJB Shiromal Fernando (Vice Chairman) Former (Hon.) Secretary, Society of Structural Engineers, Sri Lanka.

Dr. L N Senaweera (Vice Chairman) Director General, Sri Lanka Standards Institute

Prof. A K W Jayawardena (Vice Chairman) Dept

of Civil Engineering, University of Moratuwa, President,

Institution of Engineers, Sri Lanka

Brig. Madura Wijeyewickrama (Vice Chairman) CEO, National Construction Association of Sri Lanka, M&SC

Lionel Nawagamuwa (Executive Director) Executive Director, Australian Institute of Business Excellence

Prof. Chithra Wedikkara (Director) President, Institute of Quantity Surveyors of Sri Lanka

Prof. Thishan Jayasinghe (Director) Head of the Dept., Dept of Civil Engineering, University of Moratuwa

Prof. R A Attalage (Director) Dept of Mechanical Engineering, University of Moratuwa

Prof. Ranjith Dissanayake (Director) Dept of Civil Engineering, University of Peradeniya

Prof. Harsha Munasinghe (Director) Faculty of Architecture, University of Moratuwa

Prof. Ajith de Alvis (Director) CEO, Sri Lanka Institute of Nanotechnology

xx

Archt. Jayantha Perera (Director) Past President, Sri Lanka Institute of Architect

Dr. Ranjith Gammampila (Director) Dept. of Civil and Environmental Engineering, University of Melbourne Australia

Wasantha Jayasinghe (Director) Former Chairman, Industry Development Board of Sri Lanka

Dr. Lochana Gunarathne (Director) President, Academy of Sciences Sri Lanka

T B Siriwardena (Director) Director Studies, Australian Institute of Business Excellence

Susantha Katugampola (Director) Managing Partner, Fairfields Lawyers, Melbourne/Colombo

Archt./Plnr. J. Piyal Silva (Director) Secretary, Institute of Town Planners Sri Lanka

Eng. Karunasena Hettiarachchi (Director) Chairman, National Water Supply & Drainage Board

Mrs. Ramani Ellepola (Director) Director General, Central Environment Authority

Chandana Samarasinghe (Director) Director General, Sustainable Energy Authority

Ananda Wedaarachchi (Director) Consultant Journalist

Committees of the Council

Green Environmental Rating System & Life Cycle Assessment Transport Infrastructure in Built Environment Nanotechnology for Sustainable Built Environment Education & Training Awareness & Publicity International Relations Membership

xxi

Representative Organizations in the board

Central Environment Authority Urban Development Authority Sri Lanka Sustainable Energy Authority National Water Supply & Drainage Board

Institutions that have taken leadership in establishing GBCSL

Sri Lanka Standards Institute (SLSI) Sri Lanka Institute of Architects The Institution of Engineers Sri Lanka Society of Structural Engineers Sri Lanka National Construction Association of Sri Lanka Institute of Quantity Surveyors of Sri Lanka National Academy of Sciences Sri Lanka Sri Lanka Institute of Nanotechnology Institute of Town Planners Sri Lanka Faculty of Civil Engineering - University of Moratuwa Faculty of Mechanical Engineering - University of Moratuwa Faculty of Civil Engineering - University of Peradeniya Faculty of Architecture - University of Moratuwa Faculty of Civil & Environmental Engineering - University of Melbourne Leading Business Organizations in Sri Lanka

xxii

VISION OF GBCSL

Our Vision is to transform the construction industry in Sri Lanka with traditional building practices and fully adopt sustainability as the means by which our environment flourishes, economy prospers and society grows to ensure the future wellbeing of our motherland.

MISSION OF GBCSL

The Mission is to develop the sustainability of the built environment by transforming the way it is planned, designed, constructed, maintained and operated and drive the adoption of green building practices through market-based solutions, while helping to forge a new partnership between government, industry and other stakeholders.

xxiii

WORLD

EMPHASIS

ON

THE

GREEN

BUILDING

CONCEPT

The World Green Building Council is the union of national Green Building Councils from around the world, making it the largest international organisation influencing the green building marketplace.

Where we are now…

The green building concept is quite new to the current Sri Lankan context but it is rapidly expanding all over different industries as they are searching for more energy efficient buildings for their usage. The most recent and innovative example is MAS Intimates THURULIE factory at Thulhiriya which became the winner of Globe Award for Sustainability Innovation 2010. Further it is being awarded the LEED Platinum Certification by the U.S. Green Building Council, making it the World’s first LEED Platinum newly built factory. As this concept in acceptable to majority of the society, people try to grab and hold this concept. Since Sri Lanka didn’t have a clear framework and governing body for green rated buildings in the past there is an extreme necessity for such an institution for Sri Lanka.

Where we want to be…

Most of the leading countries have their own green building councils to govern their green rating for building structures. The different state councils of these countries follow a standardised rating system to assess the environmental acceptability of these buildings through green rating. United States of America’s governing body United States Green

xxiv

Building Council uses LEED (Leadership in Energy and Environmental Design) rating system and Australia’s governing body Green Building Council of Australia uses Green Star rating system and United Kingdom’s governing body UK Accreditation Service (UKAS) uses BREEAM rating system to assess and rate the environmental acceptability and sustainability of building solutions. Therefore it is an essential and timely need for Sri Lanka to build such a rating system to assess the environmental acceptability of buildings. The main purpose of the existence of GBCSL is to develop such a rating system and manage it effectively and efficiently to provide a remarkable service in assessing the buildings in terms of environmental acceptability while providing leadership to develop green solutions in the future for new developments and incorporate such concepts to existing buildings by retrofitting them to make them sustainable. Further, it is important to note that from country to country the considerations

for

those

rating

systems

will

change

as

the

environmental conditions; level of development and the availability of resources vary from place to place.

Why GREEN Rating is important for Sri Lanka...

SL®

The main purpose of the GREEN

Rating System is to encourage the

design of buildings in an environmentally acceptable manner. This will be

a

major

step

towards

adopting

a

sustainable

practice

in

development of buildings to utilize the natural resources and make efficient designs to utilise nature for the betterment of the mankind. Most of the resources that are being using today account for environmental pollution. Therefore it is the time to search for new materials and designs to reduce the impact to the environment. Hence this concept will encourage development of environmentally friendly building solutions for the use.

xxv

How the GREEN Rating System works...

SL®

In normal context when GREEN

Rating System is used as a tool to

evaluate efficiency of the built environment in the following aspects, such as Management, Energy, Indoor Environmental Quality, Materials etc and points are assigned for each category and the rating is given upon the total marks earned by each design or building solution.

What we need to do to bridge the gap...

In the development process of making Sri Lanka sustainable, the SL®

establishment of the GREEN

rating system is a critical milestone.

Accordingly the rating system has to develop for Sri Lanka to ensure that construction of buildings is conforming to the environment.

Future with GREEN Rating System...

GBCSL is the governing body of Sri Lanka responsible for developing, SL®

implementing and maintaining the GREEN

Rating System. The

governing body comprises of experts in many different disciplines who effectively contribute to the functioning of the system. Further, through SL®

GBCSL the GREEN

Accreditation Certificate will be issued for

building designers which then will be followed with continuous monitoring to ensure that the originally agreed design work is carried out. The Government will give incentives to builders and the building SL®

products solutions which achieve the bench marks set by GREEN

rating system. GBCSL will appoint authorised personnel who have the authority to rate the buildings. Such authorisation may be granted to a person who has completed the necessary technical qualification acceptable to GBCSL. xxvi

Goals of the GREEN Rating System

Sustainable Site Planning Safeguarding water and water efficiency Energy efficiency and usage of renewable energy Conservation of materials and resources Indoor environmental quality Enhancing social and cultural Values Show Leadership Educate End Users

Benefits to Owners

Lower operating costs Higher return on investment Provides healthy interior spaces for occupants Greater tenant attraction Reduced liability and risk Enhanced marketability Demonstration of Corporate Social Responsibility Future proofed assets Competitive advantage

xxvii

GREENSL® RATING SYSTEM FOR BUILT ENVIRONMENT

SL®

The GREEN

Rating System for Built Environment is a set of

performance standards for certifying Built Environments in the form of commercial or institutional buildings and high-rise residential buildings of all sizes, both public and private. The intent is to promote high performance, healthy, durable, affordable, and environmentally sound practices for new and existing buildings. SL®

Prerequisites and credits in the GREEN


Environment address eight aspects; Management (MN) Sustainable Sites (SS) Water Efficiency (WE) Energy and Atmosphere (EA) Materials and Resources (MR) Indoor Environmental Quality (EQ) Innovation and Design Process (ID) Social and Cultural Awareness (SC)

SL®

The Certifications from the GREEN


Environment will be awarded according to the following scales; Certified 40–49 points Silver 50–59 points Gold 60–69 points Platinum 70 points and above GBCSL will recognize buildings that achieve one of these rating levels with a formal letter of certification.

xxviii

All structures defined as Built Environments in standard building codes, SL®

are eligible for certification under the GREEN


Environment and include offices, retail and service establishments, institutional buildings (libraries, schools, museums, churches, etc.), hotels, and residential buildings of 4 or more habitable stories. The GREEN

SL®

Rating System for Built Environment encourages

owners and operators of buildings to implement sustainable practices and reduce the environmental impacts of their buildings over their functional lifetime. The rating system specifically addresses building site maintenance programmes, water and energy use, usage of environmentally preferred products and practices for cleaning and alterations,

sustainable

purchasing

policies,

waste

stream

management, and ongoing indoor environmental quality. The GREEN and

SL®

operators

Rating System for Built Environment provides owners of

buildings an

entry point

into

the

SL®

GREEN

certification process and is applicable to the following; Building designs, processes, systems upgrades, minor space-use changes, and minor facility alterations or additions; and SL®

Building designs new to GREEN previously

certified

under

certification as well as buildings SL®

GREEN

Accreditation

for

major

renovations, Schools or Core & Shell; these may be either ground up new constructions or buildings that have undergone major renovations.

xxix

BACKGROUND TO THE GREENSL® RATING SYSTEM

The term sustainable development was coined and offered to the world a new perspective on how to address the dilemma of advancing economic development while protecting environmental systems and enriching the quality of life for the present generation and future ones. The concept of sustainable development slowly leached its way to number of disciplines and has been speedily accepted by the world as it has holistic idea of protecting environment for the survival of mankind. However, the main obstruction remains the conversion of sustainable development from a theoretical model to an outfitted one. The sustainability frameworks have evolved throughout the past starting with the neo-classical economics, where it has used dollars as the unit of measurement. Later it was recognized the inadequacy of conventional economic knowledge tools when it comes to the use of environmental resources and the need of “special indicators” was highlighted. This is because such indicators are outside of the worldview of conventional economics. In the next phase of evolution, ecological economics, the human economy is considered as an open sub-system of the biosphere, which itself are materially closed but open to energy transfers. The third phase of the evolution considered triple bottom line; economic, social and environmental sustainability. The latest phase of frameworks are sector, domain and issue based, where sectors such as transportation, commercial, industrial and residential etc were concerned and in case of domains divisions like energy, water, land etc were concerned. Based on this framework more than six hundred sustainable accreditation systems are there in the world. The evolution of frameworks is shown in figure 01. Along the X-axis the amount of information presented by the frameworks are increasing and those represented by increased number of indicators. The Y-axis

xxx

shows the simplicity of frameworks where increased information results in complexity in their use.

Figure 01: Evolution of sustainability indicators (Chandratilake, S.R. and Dias, W.P. S, 2010)

Even though still it has not became a major and pressing problem for Sri Lanka, in construction, especially buildings, is beginning to show signs of cumulative issues in sustainability. Many countries have developed sustainability guidelines and accreditation systems based on issues that those countries are facing in the present context. Improper understanding and misinterpretation of different domains and aspects in different localities have created inadequate measure of sustainability, which would not reflect the magnitude of the local depiction of sustainability. In most cases this is arising due to use of popular or common accreditation systems without considering the local variations.

xxxi

Green Sri Lanka Rating System

Recommend Documents