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Design Green with Green Mark 2015Low Giau Leong
Environmental Sustainability Group
Climate Change & Global Warming
WHY GREEN THE BUILT ENVIRONMENT
• Largest contributor to global GHG emissions
• Buildings use:
40% global energy,
25% global water,
40% global resources,
emit 1/3 of GHG emissions
3
www.turbosquid.com
3RD Green Building Masterplan
5 Sections
Climatic Responsivene
ss
Building Energy
Performance
Resource Stewardship
Smart & Healthy Buildings
Advanced Green Efforts
The New Structure of GM 2015The New Structure of GM 2015The New Structure of GM 2015The New Structure of GM 2015:
1.01d - BIM
3D Lonely BIM
(Regulation)
3D Integrated
BIM
4D (Time) BIM
•Linking attributes to the construction programme
5D (Cost) BIM
•Specifications and quantity schedules
6D (FM) BIM
• data for maintenance and repairs
•Building performance analytics
BIM for DfMA
BIM for Design Co-
ordination
BIM for Performance Based
Simulation
AdvancedAdvancedAdvancedAdvanced GreenGreenGreenGreen EffortsEffortsEffortsEfforts (Enhanced(Enhanced(Enhanced(Enhanced Performance)Performance)Performance)Performance)
[Circular on GM 2015]
5 Sections
Climatic
Responsiveness
Climatic
Responsiveness
Building Energy
Performance
Building Energy
Performance
Resource
Stewardship
Resource
Stewardship
Smart &
Healthy
Buildings
Smart &
Healthy
Buildings
Advanced
Green Efforts
Advanced
Green Efforts
The New Structure of GM 2015The New Structure of GM 2015The New Structure of GM 2015The New Structure of GM 2015:
Outcomes of Green Mark 2015
Climate Responsiveness
• EmissionsEmissionsEmissionsEmissions reductionreductionreductionreduction
• ResilienceResilienceResilienceResilience totototo ClimateClimateClimateClimate changechangechangechange
• ContextualContextualContextualContextual designdesigndesigndesign
• LowLowLowLow carboncarboncarboncarbon technologytechnologytechnologytechnology
• EnvironmentalEnvironmentalEnvironmentalEnvironmental LeadershipLeadershipLeadershipLeadership
1.Climatic Responsive Design
Leadership
(10 points)
Urban Harmony
(10 points)
Tropicality
(10 points)
1.01 Leadership
1.01 Leadership 10
1.01a Climatic and Contextually Responsive Brief 1
1.01b Integrative Design Process 2
1.01c Environmental Credentials of Project Team 2
1.01d Building Information Modelling 2
1.01e User Engagement 3
Advanced Green Efforts 3
New in GM NRB: 2015
Enhanced from GM v4.1
1.01c Environmental Credentials
Green expertise of firms and individuals is crucial to ensure the capability of
those who are delivering the project in meeting the sustainability objectives.
Criteria Points
(Capped at 2)
At least 2 are ISO 14001 certified: Architect,
M&E engineer, C&S engineer, developer and
main contractor
0.5
At least 2 SGBC Green Services Certified firms 0.5
Certified Green Mark Manager (GMM) or
Green Mark Facilities Manager (GMFM)
0.25
Green Mark Professional (GMP) or
Green Mark Facilities Professional (GMFP)
0.5
Main builder is a BCA certified Green and
Gracious Builder
0.25 (Certified & Merit)
0.5 (Excellent & Star)
5 Sections
Climatic
Responsiveness
Climatic
Responsiveness
Building Energy
Performance
Building Energy
Performance
Resource
Stewardship
Resource
Stewardship
Smart &
Healthy
Buildings
Smart &
Healthy
Buildings
Advanced
Green Efforts
Advanced
Green Efforts
The New Structure of GM 2015The New Structure of GM 2015The New Structure of GM 2015The New Structure of GM 2015:
Outcomes of Green Mark 2015
Resource Stewardship
• ReductionReductionReductionReduction ofofofof EnvironmentalEnvironmentalEnvironmentalEnvironmental footprintfootprintfootprintfootprint
(Design(Design(Design(Design &&&& AsAsAsAs----Built)Built)Built)Built)
• BuildingBuildingBuildingBuilding LifeLifeLifeLife cyclecyclecyclecycle considerationconsiderationconsiderationconsideration
• EffectiveEffectiveEffectiveEffective managementmanagementmanagementmanagement (energy,(energy,(energy,(energy, water,water,water,water,
waste)waste)waste)waste)
• ChoiceChoiceChoiceChoice ofofofof constructionconstructionconstructionconstruction materials,materials,materials,materials, methodsmethodsmethodsmethods
• EmbodiedEmbodiedEmbodiedEmbodied carboncarboncarboncarbon
Key Amendments to Pilot Version
3.02a Sustainable Construction
• Sustainable building systems as a
standalone point system instead of
being a multiplier under CUI
• Recognised use of precast under
Sustainable building systems
• Tied green concrete scoring to
various tiers of SGBC certified green
concrete.
3.02c Sustainable Products
• Differential scoring tier for projects
that wish to exclude tenanted areas
for computation
3.Resource Stewardship
Water
(8 points)
Materials
(18 points)
Waste
(4 points)
3.02 Materials
3.02 Materials 18
3.02a Sustainable Construction 8
3.02b Embodied Carbon 2
3.02c Sustainable Products 8New in GM 2015
Enhanced from GM v4.1
Pre-requisites
Extend SC pre-requisite to Gold projects
Additional requirement for Gold+ and Platinum to
score pre-requisite 1pt from Carbon Accounting
(i) Conservation and Resource Recovery (1 point):
• Conservation of existing buildings or structures� Applicable for projects built on sites with existing building structures.
� Where the existing building on site is conserved and not demolished, the
full points can be scored.
• Enhanced Demolition Protocol to maximise resource
recovery of demolition materials for reuse or recycling� 1 pt for recovery rate of >35% crushed concrete waste sent to approved
recyclers with proper facilities
3.02a Sustainable Construction
(ii) Resource Optimisation (7 points):
• Part 1 (Capped at 4 points)� Concrete Usage Index (CUI) and Adoption of Sustainable
Building Systems
• Part 2 (Capped at 3 points)� Low-Carbon Concrete
o Recycled/ Engineered Aggregates Content
o Clinker Content
3.02a Sustainable Construction
CUI and Adoption of Sustainable Building Systems
Project’s
CUI
Points
≤ 0.60 0.5
≤ 0.50 1
≤ 0.45 1.5
≤ 0.40 2
≤ 0.35 2.5
Points awarded
Sustainable Building Systems 0.5 points 1.0 point 1.5 points
Pre-stressed Concrete Elements
Total
coverage
area ≤ 25%
of CFA
Total
coverage
area ≤ 50%
of CFA
Total
coverage
area ≤ 75%
of CFA
Hollow Core or Voided Concrete
Elements
Light Weight Concrete Elements
*High Strength Concrete Elements
Structural Steel Elements
Composite Structural Elements
Engineered Timber Elements
Prefabricated Prefinished
Volumetric Construction (PPVC)
units
Precast Concrete Elements
Leave-in Formwork
Others (to be accepted by BCA on
case-by-case basis)
*Refers to concrete grade >60MPa
Advanced Green Efforts
1 point awarded for using BIM to calculate CUI
BIM Design tools to compute CUI, carbon footprint etc
BIM for Low-carbon Building Design
Aim: Higher adoption & appropriate use of low-carbon, low-concrete, sustainable and productive materials/ products/ systems
Cobiax Technology
CUI BIM-Based Calculatorhttps://www.bca.gov.sg/SustainableConstruction/sustainable_construction.html
Low Carbon ConcreteUp to 3 points can be scored based on the design and use of low-carbon
concrete, defined as concrete comprising elements such as cements with
clicker content ≤400 kg/m3 with/without recycled/engineered aggregates
such as recycled concrete aggregates (RCA) and washed copper slag (WCS)
from approved sources to replace natural coarse and fine aggregates.
Recycled/ Engineered Aggregates
Coarse Aggregates (eg. RCA)
Fine Aggregates (eg. WCS)
Points (or points tier)
Minimum Requirement
(Tons)
≥ 1.5% X GFA ≥ 0.75% X GFA -
% Replacement by
mass of fine/coarse
aggregate
≥ 5% 0.5
≥ 10% 1.0
Low Carbon Concrete
Up to 2 points can be scored based on the use of concrete containing clinker ≤400 kg/m3 for grades up to C50/60, according to the performance requirements in the specifications.
*Concrete Categories Points (or points
tier)
Uncertified concrete with clinker content ≤400
kg/m3
0.5
SGBC-certified 1-Tick concrete 1.0
SGBC-certified 2-Tick concrete 1.5
SGBC-certified 3-Tick concrete 2.0
*concrete used shall cover at least 80% of the applicable super-structure concrete by volume. This includes ready-mixed concrete and pre-cast concrete elements. All SGBC-
certified concrete are deemed to have fulfilled the requirement of clinker content
<400kg/m3
SS EN 197-1
3.02b Embodied Carbon
Embodied carbon of building- CO2 produced during
the manufacture of materials, their transport &
assembly on site, maintenance & replacement,
disassembly
Embodied carbon- Accounts for 13-18% of the total
carbon footprint of any construction project
(UNEP, 2007)
3.02b Embodied Carbon
Criteria Points
Use of BCA Online Embodied Carbon Calculator to
compute carbon emission of various building
materials (as shown in table below)
2
Provide Own Emission Factors with Source
Justification (Advanced Green Efforts)1
Compute the Carbon Footprint of the Entire
Development (Advanced Green Efforts)2
Description Points
Declaration of Concrete, Glass and Steel 1
Declaration of additional materials (aluminium,
paint, timber flooring, ceramic tiles etc)
0.25 points per
material (cap at 1
point)
3.02b Embodied Carbon
https://www.bca.gov.sg/CarbonCalculator
Link to User
Manual
• Develop local carbon inventory (web-based)
• Track performance of local building projects in terms of embodied carbon footprint equivalent (CO2eq).
• Improve and reduce embodied carbon footprint in the local building sector.
Previous Green Mark version Enhancement for GM2015
1. Scores when a product is
used, have being used as
a mean to ‘top up Green
Mark points’
Holistic approach to use products;
encourage systems approach to
products use
2. Observed that only few
repeat suppliers and
products were used all
the time
Allow more variation of products
and suppliers to participate in
supplying the required products to
meet the same objective
3. Minimal design/ Design
using less resources are
not being recognized
Gives recognition for design using
less resources; especially where
there no necessity for additional
products
3.02c Sustainable Products
NV & Comfort
IEQ
Controls
HVAC
SC & CarbonProducts in single componentProducts in single componentProducts in single componentProducts in single component
Clarity in Product usage:C larity in Product usage:C larity in Product usage:C larity in Product usage:
High & Low Impact usageHigh & Low Impact usageHigh & Low Impact usageHigh & Low Impact usage
Main basic building productsMain basic building productsMain basic building productsMain basic building products----
Functional systemFunctional systemFunctional systemFunctional system
36
Scoring points by Scoring points by Scoring points by Scoring points by each (single)each (single)each (single)each (single)
product usedproduct usedproduct usedproduct used Scoring points when a Scoring points when a Scoring points when a Scoring points when a combination combination combination combination
of products of products of products of products (if required) (if required) (if required) (if required) is is is is usedusedusedused
3.02c Sustainable Products
Holistic approach to building material specification Holistic approach to building material specification Holistic approach to building material specification Holistic approach to building material specification
and usageand usageand usageand usage
Floor system
Wall system
Roof system
Door system
Ceiling system
External wall System
Building services(Product based)
Softscape & Hardscape (Product based)
37
Products in 6 functional systems:
• 2 Level of applications
Products in standalone application:
• Wider scope-More eligible products
Towards Holistic approach to building material specification and usage- Usage Appraisal
Main building products categorized into flexible combination of ‘Functional system’-conventional
system vs innovative solutions
Holistic approach to building material specification and usage –Assessment on material & product usage by the building functional system
1st level (Base floor group):
Complete base floor
Participating certified
products include:
• Levelling base/ screeding
• waterproofing
(where applicable)
Requirement:• 60%/ 80% 60%/ 80% 60%/ 80% 60%/ 80% in area of all applicable
floor;• 1st level must be scored before 2nd
level can be considered
• Additional bonus: 2-Ticks – 0.25pts , 3-Ticks – 0.5pts, 4-ticks – 1pt
2nd level (Finishes Group):Participating certified
products include:
• Tiles/ Stone/ Composite
tile and grouting,
pointing, skirting (if applicable)
• Carpet/ Vinyl/ laminate/
Timber strips/ boards
with underlay (if
applicable) with adhesive/ Tape,
grouting, pointing,
skirting (if applicable)
• All coats of finishing
coating/ floor finish • Raised floor system with
final finish
• Or no additional finish
required (for building
operation)
1 point
2 points
Prefinished floor
system (integrated
system)
Conventional floor
Design/ detail
Off formed floor with no additional finishes & / or
with combination of different types of floor
finishes
Floor system
3.02c Sustainable ProductsPrerequisite for all ratings: Gold- 2 points, Gold PLUS- 3 points and Platinum- 4 points
• If products are not used, it will be deemed to comply.
• Includes what tenants install at operation stage (requires justification)
• For each system, Level 1 must be scored 60% before the Level 2 can be scored.
Functional
System
Category
Base Group
(To score this group prior to
score for Finishes Group)
Finishes Group
Coverage
>60%*
Coverage
>60%*
Internal Wall 1 2
Internal Floor 1 2
External Wall 1 (>80%*) 2 (>80%*)
Roof 0.5 (>80%*) 0.5 (>80%*)
Doors 1 0.5
Ceiling 0.5 0.5
Functional
System
Category
Base Group
(To score this group prior to
score for Finishes Group)
Finishes Group
Coverage
>80%
Coverage
>80%
Internal Wall 0.5 1
Internal Floor 0.5 1
External Wall 1 2
Roof 0.5 0.5
Doors 0.5 0.25
Ceiling 0.25 0.25
Points achievable where assessment for
whole building including tenant spaces and common areas and back of house
Points achievable where assessment for all
areas (exclude tenant spaces)
3.02c Sustainable Products
(ii) Singular Sustainable Products outside of Functional Systems(ii) Singular Sustainable Products outside of Functional Systems(ii) Singular Sustainable Products outside of Functional Systems(ii) Singular Sustainable Products outside of Functional Systems
Certified by approved local certification body Points per product (≥ 80% of the applicable use)
Sustainable Hardscape
0.25 (capped at 2 points)Building Services
M&E Products
Other systems; system furniture, toilet partitions
• For singular products (i.e. hardscape, softscape, building services),
0.25 pt is accorded for every item used (cap at 4 pts including
bonus points gained from higher ticks singular products). Each
product must meet at least 80% of its applicable use.
AdvancedAdvancedAdvancedAdvanced GreenGreenGreenGreen EffortsEffortsEffortsEfforts (Enhanced(Enhanced(Enhanced(Enhanced Performance)Performance)Performance)Performance)
3.02c Sustainable Products
SGBP Rating Points per product (Functional
system)
Very Good (2-ticks) 0.25
Excellent (3-ticks) 0.5
Leader (4-ticks) 1.0
Use of products certified to higher tiers of environmental performance under
the Singapore Green Building Product Certification scheme – Capped at 2 points
(These products must fulfil ≥ 80% of the applicable use)
Use of 2 Ticks or higher products (Additional Green Efforts)
2 Ticks – 0.25 pt, 3 Ticks – 0.5 pt, 4 Ticks – 1 pt (part of functional system or
hard/softscape or building services)
Conclusion