Transcript green building & glazing compliance for sustainable design & cost

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Cost perception
about
GREEN BUILDINGS
IS GREEN EXPENSIVE OR OUR TRUE NEED TO SUSTAIN ???
Presented By
Mala Singh
Green Entrepreneur & Sustainability Advisor
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MALA SINGH
MANAGING DIRECTOR
PEC SOLUTIONS GREEN DESIGNS PVT. LTD.
.
NATIONAL EXECUTIVE COMMITTEE MEMBER
INDIAN GREEN BUILDING COUNCIL
.
GREEN BUILDING COMMITTEE MEMBER
FORESTS & ENVIRONMENT DEPT. – GOVT OF GUJARAT
.
HEAD CONVENER – GREEN GOVERNANCE (GOVT)
MUMBAI CHAPTER – IGBC
.
GROUP SUSTIANBILITY ADVISOR
SKIL PORTS & LOGISTICS LTD.
.
GREEN BUILDING & SUSTAINABILITY ADVISOR
DEVELOPER GROUPS & INFRASTURCTURE COMPANIES
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Millions of years ago several planets came into existence
but it was our planet Earth which decided to give LIFE
and Beautiful LIVING to several species and so became
MOTHER EARTH.
“ WE HAVE ONLY ONE EARTH ”
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POPULATION
DEMAND
INDUSTRIAL GROWTH
URBANISATION
CONSUMPTION OF NATURAL
RESOURCES
GLOBAL WARMING &
CLIMATE CHANGE
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Buildings: An essential sector in climate
change Mitigation
Through creation of intelligent green buildings
With estimated 60% of global energy consumption, the operation of buildings contributes more to energy use
and climate change than either transportation or industry.
To meet the emerging climate change and carbon challenge the human settlement needs retrofitting. Buildings
have to be planned & designed with an holistic and integrated approach, so that they contribute in
enhancement of the City environment, Greenery, Energy & Water efficiency, Human comfort, Quality of life.
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INDIA’S NATIONAL ACTION PLAN FOR CLIMATE
CHANGE
1. National Solar Mission – To increase the share of solar energy and other renewable and non-fossil based energy sources
2. National Mission for Enhanced Energy Efficiency – To promote energy efficiency through star labelling system and
energy conservation building code (ECBC).
3. National Water Mission - By 2050 it states that India is likely to be water scarce thus National Water Mission thus aims
at conserving water, minimizing wastage and ensuring more equitable distribution through integrated water resource
management.
4. National Mission for a Green India - It builds on the Prime Minister’s Green India campaign for afforestation of 6
million hectares and the national target of increasing land area under forest cover from 23% to 33%.
5. National Mission on Strategic Knowledge for Climate Change - To work with the global community in research and
technology development and collaboration through a variety of mechanisms and, in addition, will also have its own
research agenda supported by a network of dedicated climate change related institutions and universities and a Climate
Research Fund. The Mission will also encourage private sector initiatives for developing innovative technologies for
adaptation and mitigation.
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GREEN BUILDING MOVEMENT IN INDIA
 To promote Green Building Movement In India, Indian Green building Council & GRIHA are the leading
organizations.
 Various rating systems (IGBC)
1. IGBC Green Homes Rating
2. LEED India CS
3. LEED India NC
4. IGBC Green Township
5. IGBC Green SEZ
6. IGBC Green Factory Rating
7. IGBC Landscape rating
8. IGBC existing building rating
 GRIHA (TERI) – SVA GRIHA, GRIHA RATING, LARGE Development rating
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SOME OF The IGBC CERTIFIED PROJECTS
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SOME OF THE CERTIFIED BUILDINGS BASED ON
GRIHA APPROACH IN INDIA
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Cost of green ?
There is no “one size fits all”
answer to the question of the cost
of Green. Green Buildings can be
done with high or low cost both.
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INTEGRATED APPROACH & PLANNING FOR GREEN BUILDING DESIGN
(SUSTAINBILITY IS NOT BELOW IN THE – LINE ITEM )
• Do you think “Integrated Approach & Planning for Green building design” leads
to escalate the project cost???
• Answer is “NO”
• In fact, this approach minimizes the regulatory risk & also support Climate
Change mitigation measures.
• This approach also add value in the project by providing long term paybacks &
benefits in terms of energy & water savings
• This approach also defines “Social Responsibility” & contributes in the Sustainable
Development & Green Economy.
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INTEGRATED APPROACH & PLANNING FOR GREEN BUILDING DESIGN
(SUSTAINBILITY IS NOT BELOW IN THE – LINE ITEM )
• As per various Global studies, it was proved that Green Buildings do not require
additional cost, if design project team have thorough knowledge of Green &
Sustainable parameters, have the capability to incorporate & integrate these
features in the planning stage of design.
• The perception of additional cost remains in the mind set of those people, who
consider sustainability parameters as additional features in the project.
• When establishing a design and a budget for a Green Building, the key point to
remember is that “Sustainability is a program issue”, rather than an added
requirement.
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INTEGRATED APPROACH & PLANNING FOR GREEN BUILDING DESIGN
(SUSTAINBILITY IS NOT BELOW IN THE – LINE ITEM )
The first question in budgeting should not be “How much more will it cost?,” but “How
will we do this?” This must be done as early as possible in the project and it must be
considered at every step of design and construction.
This is done by:
• Establishing team goals, expectations & expertise (Architect, Env. Planner, MEP experts,
landscape, Site Analyst etc.). We need the complete team on board to start design
• Including specific goals in the Program
• Aligning budget with program.
• Staying on track through design and construction
Perhaps the most important thing to remember is that sustainability is not a below in the-line item. (Need to be treated “First Thought” in the mind)
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SYNERGY OF COST WITH CURRENT ENVIRONMENTAL
POLICY & DESIGN REGULATIONS IN INDIA
There is no doubt that better understanding of Environmental Policy & applicable
design regulations for each region in India, to incorporate specified
sustainability parameters of the policy & regulations in the planning stage
itself leads to define the exact cost of the project planned. Hence there is no
point of additional cost.
• Under EIA notification 2006 of MoEF, Environmental Clearance is mandatory
for all construction projects (more than 20,000 sq.mt BUA).
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SYNERGY OF COST WITH CURRENT ENVIRONMENTAL POLICY & DESIGN
REGULATIONS IN INDIA
The following sustainability parameters have been covered as mandatory part of project
design & implementation in India.
• Site Planning as per NBC (retaining topography, landscape, soil erosion measures etc.)
• Design Planning as per NBC (climatology/ orientation)
• Energy Management & design (ECBC/ BEE – building envelope & Energy Efficient
technologies)
• Water Management & design (NBC, BIS, IS, CPCB)
• Material Management (fly ash notification of MoEF, procurement of Green materials)
• Construction Management Plan & Compliance monitoring reports is a part of
regulatory frame work.
**Note – The above parameters are prescribed in the mandatory conditions of Environment clearance issued.
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SYNERGY OF COST WITH CURRENT ENVIRONMENTAL POLICY & DESIGN
REGULATIONS IN INDIA
In fact, it is also clearly defined in the prescribed Environmental conditions that
“Occupancy Certificate” should not be issued to the project until all Environmental
Infrastructure & Sustainability parameters have not been installed, commissioned &
validated by the Local Corporation bodies.
Need & Challenges:
• Lack of Environmental Policy awareness in the architectural education system
(induction of legal policy & Green parameters in the Education syllabus)
• Intent of Developers to implement the required mandatory norms on the ground
(paybacks & benefits understanding required. Govt. incentives schemes may encourage
the same)
• Lack of expertise (Trainings need to be provided to the execution team)
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SYNERGY OF COST WITH CURRENT ENVIRONMENTAL POLICY & DESIGN
REGULATIONS IN INDIA
Some of the states have already initiated incentive schemes for their regions to encourage
Sustainability…..
• Gujarat Govt. has mandatory RWH policy, Solar policy, & integrated water
management facility for recycling & reuse of waste water. Also provides Rs.9.47 for 1
unit of electricity generation under the export policy of Renewable Energy directly
connected with grid, it’s a long term payback (Monthly).
• Thane, Maharashtra has mandatory solar water heater policy & provide tax benefits &
various other Green parameters.
• Tamil Nadu has also well defined solar policy & subsidy/ incentive benefits.
RWH(Refund policy), Penalties are also well defined.
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SYNERGY OF COST WITH CURRENT ENVIRONMENTAL POLICY & DESIGN
REGULATIONS IN INDIA
• In Bangalore water Supply & sewerage board proposes tax rebate on RWH filters. (Relaxation
of VAT for key components used in the installation). Other tax rebates in the implementation
of renewable energy.
• The UERC (Uttarakhand electricity Regulatory commission) rebate is paid in addition to the
central government investment subsidy, which is 60% of the SWH benchmark costs.
• PCMC (Pimpri Chinchwad Municipal Corporation) rebate in property tax & builders
premium for Green buildings. (GRIHA rated), MNRE incentives to GRIHA rated projects.
• 0.25% concession in the interest rate by State Bank of India for home loans.
• Faster Environmental approvals for IGBC & GRIHA Pre- certified projects.
Still Govt. needs to streamlined the incentive policies for all the states from Central & Regional
level to encourage implementation of Sustainability parameters.
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INTEGRATED APPROACH & PLANNING FOR GREEN BUILDING DESIGN
(SUSTAINBILITY IS NOT BELOW IN THE – LINE ITEM )
CONCLUSION
Incorporation of all sustainability parameters defined as per legal regulations (EC)
in the design planning itself leads to create an integrated design approach & also
complement the requirements of Green Building norms in the project design,
reduce the regulatory risk & keep no option for “adoption of green” separately.
Hence legally compliant projects have no additional cost.
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GREEN BUILDING & GLAZING COMPLIANCE FOR SUSTAINABLE DESIGN & COST EFFICIENCY
Can we assume a building without any opening, where there is no outer connectivity? –
“No”
What we need? – An adequate material in the building opening, which can allow us to
view the outer world & also reduce heat gain – i.e. “GLASS”
• Glass is an excellent green material, if used intelligently. Certain glasses like solar
control glasses can reflect heat or UV rays and maintain optimal temperature inside
the building. They let in great amount of natural lights to energize the interiors. Thus
glass in buildings substantially reduces the need for artificial lighting and allows daylight to light the interiors. It leads to achieve higher energy efficiency in the Green
Buildings.
• It can be used in residential & commercial structures both.
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GREEN BUILDING & GLAZING COMPLIANCE FOR SUSTAINABLE DESIGN & COST EFFICIENCY
For the selection of appropriate Glass suitable to a specific design of a building depends upon
following parameters.
• Climate zone– 5 climatic zones of India as per NBC
• Building orientation – Maximum openings/larger façade should be in north & south and buffer
spaces in the west & east.
• Wall Window ratio – The ratio of vertical fenestration area to gross exterior wall area.
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GREEN BUILDING & GLAZING COMPLIANCE FOR SUSTAINABLE DESIGN & COST EFFICIENCY
•
•
•
SHGC – the ratio of solar heat gain entering the space through the fenestration area to the incident solar
radiation, typically ranging from 0.9 to 0.1 where the lower value indicate lower solar gain
U value – Heat gain due to temperature difference is expressed by U-Value of a glass. It is the amount of heat
transferred (loss/gain),due to a temperature differential of 10C between inside and outside per square meter.
Shading design – to reduce insolation & heat gain like pergolas, chajjas, jallis, overhangs, green wall or plantation
on east & west sides.
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GREEN BUILDING & GLAZING COMPLIANCE FOR SUSTAINABLE DESIGN & COST EFFICIENCY
Baseline Criteria for IGBC Green Homes as per version 2.0 (Ref: Annexure 1)
Energy performance approach (Modeling & simulation)
Fenestration – SHGC value
Climate Zone
Maximum SHGC Value
WWR (less than 20%)
WWR (20 to 30%)
WWR (more than 30%)
Composite
0.5
0.42
0.36
Hot & Dry
0.5
0.42
0.36
Warm & Humid
0.5
0.42
0.36
Moderate
0.6 if window to wall 0.48
0.4030%
Glazing
U- value (applicable only
ratio {WWR} more than
Coldall climate zones maximum
0.8
0.80
For
U value for baseline
is 5.7 W/m2k.0.80
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GREEN BUILDING & GLAZING COMPLIANCE FOR SUSTAINABLE DESIGN & COST EFFICIENCY
Prescriptive Criteria for building Envelope Measures as per IGBC Green Homes version 2.0 (Ref: Annexure - 2)
Fenestration – SHGC value
Climate Zone
Maximum SHGC Value
WWR (less than 20%)
WWR (20 to 30%) WWR (more than 30%)
Composite
0.38
0.32
0.27
Hot & Dry
0.38
0.32
0.27
Warm & Humid
0.38
0.32
0.27
Moderate
0.50
0.40
0.30
Cold
0.8
0.8
0.8
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GREEN BUILDING & GLAZING COMPLIANCE FOR SUSTAINABLE DESIGN & COST EFFICIENCY
Prescriptive Criteria for building Envelope Measures as per IGBC Green Homes version 2.0 (Ref: Annexure - 2)
Glazing U – value
Climate Zone
Max. U value
WWW less than 30%
Min. U value
WWW more than 30%
Composite
3.3
2.8
Hot & Dry
3.3
2.8
Warm & Humid
3.3
2.8
Moderate
3.3
2.8
Cold
3.3
2.8
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GREEN BUILDING & GLAZING COMPLIANCE FOR SUSTAINABLE DESIGN & COST EFFICIENCY
As per ECBC Compliance ( applicable to GRIHA & MoEF guidelines for building envelope)
Vertical fenestration U factor & SHGC Requirements ( U factor )
Climate Zone
WWR less than 40%
WWR between 40% - 60%
Maximum U – factor
Maximum SHGC
Maximum SHGC
Composite
3.30
0.25
0.20
Hot & Dry
3.30
0.25
0.20
Warm & Humid
3.30
0.25
0.20
Moderate
6.90
0.40
0.30
Cold
3.30
0.51
0.51
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GREEN BUILDING & GLAZING COMPLIANCE FOR SUSTAINABLE DESIGN & COST EFFICIENCY
Glass with low U value & low SHGC gives good energy performance in tropical climate whereas a glass with low U value and
high SHGC gives good energy performance in the cold climate.
Tangible & Intangible benefits of glass:
Intangible Benefits:
• Psychological connection to the outside world.
• Reduce visual fatigue
• Improve health & Increase productivity
Tangible Benefits:
• Comfortable lighting conditions/ reduction in the load on lighting power
• Daylight sensor reduce the artificial lighting needs & increase the life of fixtures.
• Low U value & low SHGC reduces the heat ingress resulting into decrease in HVAC load & energy consumption.
• Glass has recycled content & provide regional materials credits
• In LEED, Glass contributes 4 points & in GRIHA it has great impact on criterion 13 & 14 (to reduce conventional energy
demand & to optimize energy performance of the building).
** Note – Comprehensive Energy Simulation studies with the help of all the stakeholders leads to reap the maximum
benefits.
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ES AND POST OCCUPANCY PRACTICES FOR GREEN BUILDING DESIGN
Do you think Sustainable construction practices increase the cost???
“NO”
In fact, these practices will keep the site healthy, will not disturb the ecosystem & will
minimize the impact of project activities on the Environment, also conserve &
preserve natural resources, this will lead to increase in the productivity &
healthy/safer environment for construction workers & site project team.
•
•
•
•
Construction Management Plan needs to incorporate the conditions & guidelines to comply all
sustainable practices required as per Green Building norms (MoEF guidelines may also be
referred)
Contractors terms & conditions should be updated accordingly.
Responsibility needs to be identified for the implementation & monitoring of the compliances on
site.
Action plan should be executed & monitoredIf youcontinuously
.
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ES AND POST OCCUPANCY PRACTICES FOR GREEN BUILDING DESIGN
DURING CONSTRUCTION (Practices need to defined as per specific site conditions)
Mulching
Tree transplantation
 Click to edit
Master text styles
 Second level
 Third level
 Fourth level
 Fifth
level
Cleaning of tyres
Excavated fertile soil (storage & reuse)
Silt Fencing
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ES AND POST OCCUPANCY PRACTICES FOR GREEN BUILDING DESIGN
DURING CONSTRUCTION…..
 Click to edit Master
text styles
 Second level
 Third level
 Fourth level
 Fifth level
Personal Protective equipments
Drinking water facility
Adequate lighting
Handling construction Waste
First Aid Facilities
Day care crèche
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ES AND POST OCCUPANCY PRACTICES FOR GREEN BUILDING DESIGN
POST CONSTRUCTION PRACTICES ……
 Click to edit Master
text styles
 Second level
 Third level
 Fourth level
 Fifth level
Waste collection at each dwelling unit
Organic waste converter
Waste collection in common area
Vermicomposting
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No Smoking
ES AND POST OCCUPANCY PRACTICES FOR GREEN BUILDING DESIGN
GREEN EDUCATION
 Click to edit Master text
styles
 Second level
 Third level
 Fourth level
 Fifth level
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LING , THE ULTIMATE GOAL OF SUSTAINABLE DEVELOPMENT
Do we need to focus on “My Individual Benefit” or “Community
Benefit” for better Tomorrow ???
Its for all….. People, Planet & Profit
To the Building occupants
• Lower operating cost (Electricity & water bills)
• Enhance quality of life
• Healthy environment & happiness
To the Builders
• Faster approval from the Government.
• Brand Building under CSR program
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“GREEN” FULFILLING , THE ULTIMATE GOAL OF SUSTAINABLE DEVELOPMENT
To the Environment
• Reduction in demand of natural resources
• Reduction in GHG emission (Global Warming & Climate Change)
• To enhance the Green cover.
To the community & Nation
• Powerful economic development tool for sustainable
communities & growth.
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We need to change our perception of
“Green is expensive” to “Green is the need of the
hour” for better tomorrow & good quality of life.Lner
Mala Singh ,
(Green Entrepreneur)
Founder & MD
PEC Solutions Green Designs Pvt. Ltd.
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