Download - Design ecology a 21st century strategy
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DESIGN
ECOLOGY A 21st Century Strategy
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• Straight Lines to Low Point Results in Flooding & Low Summer Stream Flows
• Impacts to Habitat – poor water quality
– loss of cover & biodiversity
– low, warm stream flows, no O2
• Impacts to Infrastructure – increased flooding with urbanization
– combined sewer overflows
– exceeded treatment capacity
Existing Infrastructure
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Impervious Surfaces
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THE RESULTS HAVE NOT BEEN GOOD
LOST BIODIVERSITY
LOW STREAM FLOWS
INCREASED HEAT
MORE FLOODING
ENERGY IMPACTS
WATER QUALITY
UNSAFE
UNSANITARY
Infrastructure Failures
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Integrated Systems
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Bioswales
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Flow-Through
Planters
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Living Roofs residential
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Living Roofs education: College of Marin, Nueva School
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civic: California Academy of Sciences
Living Roofs
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CAS
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Living Walls
• Water filtration
• Storm-water conveyance
• Storm-water detention
• Reduction of cooling
demand
• Habitat for birds and
butterflies
• Air quality
• Aesthetic benefit
• Mitigate “Urban Heat Island”
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interiors
Living Walls
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Living Walls civic: California Academy of Sciences
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Living Walls Commercial office building: 110 embarcadero, san francisco
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Greywater
BERKELEY ECOHOUSE
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BERKELEY ECOHOUSE
Greywater
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Greywater
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Functional civic art in Seattle
Rainwater Harvesting
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ROOF CATCHMENT CALCULATIONS
(CA) x (R) x (E) x (7.48 gal/cu. ft.) = GALLONS
CA = CATCHMENT AREA (SQ. FT.)
R = RAINFALL (FEET)
E = EFFICIENCY 0.9 = STD ROOF
0.8 = GRAVEL ROOF
0.3 = GREEN ROOF
EASY METHOD (standard roof only):
each 1,000 SF of catchment area
1” of rainfall = 600 gallons
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Infiltration Swales
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Natural Swimming Pools • Natural Swimming Environment uses gravel, plants
and light to keep pool clean
• Chlorine-Free Water is healthy, clean and safe
• Provides Wetland Habitat
• Beautiful Landscape Element
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Natural
Swimming
Pools
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Stormwater Mgt
• Protect water quality
• Reduce impacts to
infrastructure
• Reduce irrigation demand
• Infiltration / recharge
• Biofiltration
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SEA Streets Seattle
95% Runoff infiltrated to groundwater from 1.1 acre sub-basin
Stormwater Mgt
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Low Impact Development (LID)
Low Impact Development Center
http://www.lowimpactdevelopment.org/
EPA SWPPP Templates
http://cfpub.epa.gov/npdes/stormwater/swppp.cfm#template
EPA LID
http://www.epa.gov/owow/nps/lid/
Roof Catchment Calculator
http://www.bushmantanks.com/WhyWaterTanks/Water%20Catchment.aspx
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California Graywater Standards, Title 24, Part 5, California Administrative Code,
Graywater Systems For Single Family Dwellings
http://www.owue.water.ca.gov/docs/Revised_Graywater_Standards.pdf
Graywater Guide http://www.owue.water.ca.gov/docs/graywater_guide_book.pdf
Oasis Designs
http://www.oasisdesign.net/greywater/index.htm
The Irrigation Association, irrigation information
http://www.irrigation.org
Green Affordable Housing Coalition
www.greenaffordablehousing.org