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SUSTAINABLE BUILDINGS
A New Approach to Building
CAUBO 2006
John Metras, P.Eng.
University of British Columbia
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Overview
What is a sustainable or green building?
What is LEED?
Why build green? How much does it cost?
Case Study: UBC Life Sciences Centre
Challenges Keys to Success
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What is a sustainable building?
Uses key resources more efficiently
energy, water, materials and land
Reduces ecological loadinggreenhouse
gases, ozone-depleting substances, wastes
Creates healthier environments for people to
live, work and learn
Has lower overall lifecycle costs
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What is LEED?
Leadership in Energy & Environmental Design
Rating system for developing high
performance, sustainable buildings
Voluntary, consensus-based, well recognized
Developed by US Green Building Council
Adapted by the Canada Green Bldg Council
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LEED Point System
Performance Category Credits/Points
Sustainable Sites 8 credits / 14 points
Water Efficiency 3 credits / 5 pointsEnergy & Atmosphere 6 credits / 17 points
Materials & Resources 7 credits / 13 points
Indoor Environmental Quality 8 credits / 15 points
Innovation & Design Process 2 credits / 5 points
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LEED Rating Levels
LEED Designation Required Points
Total Possible Points 69 points
LEED Platinum 52+ points
LEED Gold 3951 points
LEED Silver 3338 points
LEED Certified 2632 points
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Applications for LEED
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Why use LEED?
Provides a common and consistent framework
for defining a green building
Is relatively simple to implement
Is not overly prescriptive
Can be adapted for local climates and standards
Provides legitimacy of 3rd
party certification Is gaining momentum as the accepted rating
system
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LEED Projects in Canada
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Positioning of LEED in the Market
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Green Building Benefits
25-60% energy savings
30-50% water savings
CBIP financial incentive Improved worker productivitydue to
improved lighting and thermal comfort
Reduced sick time from allergies, asthma &respiratory illness
Lower life-cycle costs
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Financial Benefits
Financial Benefits of Green Buildings (per ft2)
Category 20-year NPVEnergy Value $5.79Emissions Value $1.18
Water Value $0.51Waste Value (construction only) 1 year $0.03Commissioning O7M Value $8.47Productivity and Health Value (Certified and Silver) $36.89Productivity and Health Value (Gold and Platinum) $55.33Less Green Cost Premium ($4.00)
Total 20-year NPV (Certified and Silver) $48.87Total 20-year NPV (Gold and Platinum) $67.31
Source: The Costs and Financial Benefits of Green Buildings
A Report to Californias Sustainable Building Task Force October 2003
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Financial Benefit Breakdown
Percentage Breakdown of Green BuildingFinancial Benefits
Productivity &
Health
70%
Energy
11%
Emissions
2%
Water
1%
Waste0%
Reduced O&M
16%
Source: The Costs and Financial Benefits of Green Buildings
A Report to Californias Sustainable Building Task Force October 2003
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Capital Cost Premium
Source: The Costs and Financial Benefits of Green Buildings
A Report to Californias Sustainable Building Task Force October 2003
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Case Study:
UBC Life Sciences Centre
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UBC Life Sciences Centre
Architects: Bunting Coady/Diamond & Schmitt
Construction Manager: Ledcor
Area: 52,000m2 / 560,000ft2
Cost: $110 million
Occupants: 2,654 staff, researchers, students
Energy: 28% less than standard building
Water: 50% less than standard building
LEED Rating: Gold
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UBC Life Sciences Centre
Sustainable Site
Brownfield site
Bicycle storage & changing
facilities No new parking spaces
Re-vegetated 87.5% of
landscape with native and
adapted plants Erosion & sediment control
during construction
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UBC Life Sciences Centre
Water Efficiency
Dual-flush toilets
Waterless urinals
Sensor-controlled faucets 87.5% of irrigation system
to be de-commissioned
after 1 year plant
establishment period
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UBC Life Sciences Centre
Energy Efficiency
28% better than ASHRAE
90.1 standard
Annual energy savings of6.4MWh, equal to $180,000
Heat recovery systems
Demand ventilation
Maximum natural lighting Motion sensor lighting
controls
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UBC Life Sciences Centre
Materials & Resources
Local building materials,
10% recycled content
80% of construction wasterecycled or salvaged
Green housekeeping practices
Comprehensive recycling and
composting program
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UBC Life Sciences Centre
Indoor Environmental
Quality
Low-emitting materials
CO2 monitoring
BMS for environmental
control and monitoring
Displacement ventilation
Maximum natural lighting
Green housekeeping program
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Other Green Buildings at UBC
CK Choi Building (1994)
Liu Centre (1999)
Technology Enterprise Facility III (2003)
-LEED Silver Certified
ICICS Building (2005)
Frederick Kaiser Building (2005)
Aquatic Ecosystems Research Lab (2005)- LEED Silver Certified
Buchanan D Block Renewal (2006)
- LEED Silver (planned)
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Challenges
High expectations of building performance
Acoustics
Waterless urinals & dual-flush toilets Motion sensor activated lighting
Operating systems at optimal level
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Keys to Success
Incorporate green principles at the beginning of the
design process
Involve operations staff early in the design process
Avoid unmanageable complexity in building systems
Undertake a thorough commissioning process
Ensure staff are properly trained in building system
operation
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Summary
Why Build Green?
Proven environmental & health benefits
Minimal initial cost premium
Life-cycle cost savings
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Further Information
Canada Green Building Council
http://www.cagbc.org/
US Green Building Councilhttp://www.usgbc.org/
UBC Campus Sustainability Office
http://www.sustain.ubc.ca/
http://www.cagbc.org/http://www.usgbc.org/http://www.sustain.ubc.ca/http://www.sustain.ubc.ca/http://www.usgbc.org/http://www.cagbc.org/