the leed process is a tool to look at sustainable design. different levels of green building...
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Waverley Memorial Elementary School
LEED® Leadership in Energy & Environmental Design
Canada is among the most wasteful nations on Earth:
High energy consumption;
High water use;
High waste generation.
Why Sustainable Design?
If everyone used as much as the average Canadian, we’d need 4 more planets like Earth to generate resources & absorb waste.
Why Sustainable Design?
The Building Industry Traditional building construction
consumes:
40% of the worlds total energy use, 30% of raw material consumption,
The Building Industry Traditional building construction
consumes:
25% of the timber harvest,
35% of the world’s
CO2 emissions,
The Building Industry Traditional building construction
consumes:
16% of the fresh water used,
40% of landfill waste,
Leadership in Energy & Environmental Design (LEED)
Intended to transform the market
Promote integrated design
Recognize environmental leadership
Raise awareness
Prevent false claims – “Greenwashing”
The LEED process is a tool to look at sustainable design.
Different levels of green building certification are awarded based on credits earned in several categories including site, energy, water, material resources, and indoor environmental quality.
Certified
Silver
Gold
Platinum
Sustainable Sites
Water Efficiency
Energy & Atmosphere
Materials & Resources
Indoor Environmental Quality
Water Efficiency
8%
Energy & Atmosphere
27%
Indoor Environmental
Quality23% Sustainable
Sites22%
Materials & Resources
20%
Water Efficiency
8%
Energy & Atmosphere
27%
Indoor Environmental
Quality23% Sustainable
Sites22%
Materials & Resources
20%
LEED Canada – 7 Prerequisites, 70 points
LEED Rating System
A prerequisite must be achieved in order for a building to be certified,
regardless if it is seeking a certified, silver, gold or platinum level.
LEED Rating System
Achieving any individual credit is optional – points are awarded for achieving credits. The greater the
number of points, the higher the level of certification is awarded.
Sustainable Sites
Prerequisite: Erosion & Sediment Control
Cr. 1: Site Selection
Cr. 4: Alternative Transportation
Cr. 5: Reduce Site Disturbance
Cr. 6 Stormwater management
Cr. 7: Reduce Heat Island Effect
Cr. 8: Light Pollution Reduction
Prerequisite 1: Erosion & Sedimentation Control
Prepare an E&S Plan
Install silt fences around perimeter of property
Protect storm sewers from sediment
Protect topsoil by stockpiling for later use
Plant grass to prevent wind erosion of soil
SS Credit 4.2: Bike Storage
Bicycle storage, showers & change facilities for 5% of building occupants
SS Credit 4.4: Parking
Size parking to meet zoning requirements and provide preferred parking for car pools
Consumes less fuel
Fewer vehicles on roads
Fewer vehicle exhaust emissions
Less area required for parking = more green space
SS Credit 5.2: Development Footprint
Designate a green space equal in area to the building footprint that will be preserved for the life of the building.
For schools, the sports field works very well as the designated green space.
SS Credit 7.2: Heat Island Effect - Roof
Reduce the heat island effect by using reflective roofing materials Want to learn
more about the heat island
effect? Check out this Health
Canada publication:
The Urban Heat Island Effect:
Causes, Health Impacts and Mitigation Strategies
SS Credit 8: Light Pollution Reduction
Prevent any light ‘spill-off’ from the property to both adjacent properties and upward into the night sky.
Image from http://imageshack.us/photo/my-images/213/nightskiesstellarium.jpg/
Water Efficiency
Cr. 1 Water Efficient Landscaping
Cr. 2:Innovative Wastewater Technologies
Cr. 3:Water Use Reduction
Credit 1: Water Efficient Landscaping
The landscaping does not require potable water to be maintained. The native and adapted species can survive using only rainwater.
Red MapleSugar Maple
Pin Oak
Credit 2: Innovative Wastewater Technologies
A cistern stores rainwater collected from the roof, which is then used to flush toilets and urinals. This saves more than 650,000 litres of fresh water per year!
http://www.epa.gov/oust/graphics/clipart.htm
Credit 3: Water Use Reduction
Low flow fixtures reduce water by more than 64% of a typical school. This school used one millions fewer litres of fresh water than a typical school!
http://www.epa.gov/oust/graphics/clipart.htm
Energy and Atmosphere
Prereq. 1 Building System Commissioning
Prereq. 2 Minimum Energy Performance
Prereq. 3 CFC Reduction
Cr. 1 Optimize Energy Performance
Cr. 3 Best Practice Commissioning
Prerequisite 1: Building System Commissioning
Commissioning is a process that ensures all
of a building’s fundamental systems and elements operate as they were designed
to do.
Saves energy and money
Verifies that spaces receive
adequate ventilation
Confirms that controls operate
as expected
Prerequisite 2: Minimum Energy
PerformanceA LEED certified building must be at least 25%
more energy cost efficient than the Model National Energy Code for Buildings (MNECB)
Waverley Memorial Elementary School is 46.9% more energy cost-efficient than the MNECB – this will earn 5 additional points under the “Optimize Energy Performance”
credit.
Prerequisite 3: CFC Reduction
CFC stands for Chlorofluorocarbon
CFCs are a chemical that damages the ozone layer
By using equipment that is CFC-free, we help protect ourselves against harmful UV rays
What can you do to protect
the ozone layer?
Credit 1.1: Optimize Energy Performance
WMES is 46.9% more cost efficient with regard to energy consumption than a
typical building.That’s a lot of energy being
saved!Enough to 850
100W light bulbs …
… 24 hours a day for 365 days a
year
That’s a lot of money being
saved!
About $70,000 per year
Or close to $200 per student
What do you do to save energy?
Materials & Resources
Prereq. 1 Collection & Storage of recyclables
Cr. 2 Construction Waste Diversion
Cr. 4 Recycled Content
Cr. 5 Regional Materials
Prerequisite 1: Collection & Storage of
RecyclablesEvery LEED Certified building requires a
room or area dedicated to
collecting and storing recyclables
In addition, an area outdoors is also
dedicated for storing recyclables and
compost
Cardboard
Glass
Metal
Plastic
Organics
Credit 2: Divert Construction Waste
from Landfill39.6 tonnes of
waste were removed from the
site during construction.
31.1 tonnes of this was
diverted from landfills
That’s a diversion rate of
78.5%
How much of your household
waste is diverted from the landfill?
That’s the weight of 5 adult elephants
Credit 4: Recycled Content
Some of the materials used to
construct this school contain
recycled material
Concrete blocks
Steel beams
Whiteboards
Insulation
About 23.5% of all the materials used to construct this school contain
recycled content.
Credit 5: Regional Materials
Regional materials are those that are extracted and manufactured within a certain distance from the
school
Within 800km when transported by truck
Within 2400km when transported by ship or rail
Indoor Environmental Quality
Prereq. 1 Minimum Indoor Air Quality Performance
Prereq. 2 Tobacco Smoke Control
Cr. 3 Indoor Air Quality Management Plan During Construction
Cr. 4 Low-Emitting Materials
Cr. 8.2 Views for 90% of Spaces
Prerequisite 1: Minimum IAQ Performance
This prerequisite ensures adequate fresh air is being supplied to people in the building
IAQ stands for Indoor Air
Quality
What sorts of things might affect the air quality in a
school?
Why is having fresh air in a
building important?
Prerequisite 2: Tobacco Smoke Control
This prerequisite ensures smoking does not occur near any building
openings, such as vents, doors and windows
This is easy to achieve …
… because smoking is not permitted on school property
Credit 3: IAQ Management Plan
During ConstructionIt is important to ensure everyone in the
building has clean air to breathe. This includes the workers constructing the school
Here are photos of some of the measures used to protect workers
Gravel to keep workers from tracking dirt inside … ductwork is sealed to prevent dust from entering … low-emitting materials were used … fans were used to move fresh air throughout the building … porous materials
were kept sealed until they were ready to be installed.
Credit 4: Low Emitting Materials
Ever notice that after a room is
painted, it smells bad?
This is caused by VOC’s – that’s
Volatile Organic Compounds
VOC’s evaporate at room temperature,
and our bodies (and noses) are very sensitive to
them
VOC’s aren’t good for us … so products
containing as few as possible were
used …
… Products such as paints, adhesives, sealants, glues and carpet.
Credit 8.2: Views for 90% of Spaces
Views to the outdoors are important for people in buildings … would you want to spend all day in a
room with no windows?
Windows allow people in buildings to connect
with the outdoors, while still being productive
In fact, studies have shown that having a view to the outdoors actually increases a
worker’s concentration.
Innovation in DesignPoints can be earned for innovative designs and measures beyond the scope of the LEED rating system – here is what WMES has accomplished:
Cr. 1.1 Scent-smart policy
Cr. 1.2 Exemplary performance for using Regional Materials
Cr. 1.3 Exemplary performance for Water Use Reduction
Cr. 1.4 Green Education & Demonstration Program
Cr. 2 LEED Accredited Professional
Scent Smart PolicyNo scents is good
sense.
Scented products, such as perfumes and colognes, can trigger asthmatic
reactions for people sensitive to odours
Keep your school as a safe environment for everyone and
avoid using scented products
For a list of locally available scent-free products, visit:
http://lesstoxicguide.ca/
Exemplary PerformanceExemplary performance credits are awards when the design team has gone above and
beyond the LEED standards.
Regional Materials:
39.1% of the materials used in
construction are of a regional content.
Water Use Reduction:
WMES uses 64.1% less water than a
conventional building
Green Education & Demonstration
Having seen this presentation, do you have a better understanding of what features make
your school a LEED certified building?
What is LEED?
Name some of the
“green” features in your school
What can you do to keep your school “green”?
LEED Accredited Profession (AP)
A LEED AP helps guide the project from design through construction to ensure that LEED
standards are met.
A LEED AP may be an architect, engineer, designer, technician, or one of many skilled
trades in the construction industry.
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