Module 03 Sustainable Sites Flashcards
4 Key issues that help define how location affect project are:
Transportation
Site selection
Site Design & Management
Stormwater management
Smart Growth Approach
Seeks to:
Protect undeveloped land
Reuse/restore previously developed sites
Reduce automobile use or promote alternative transportation
Develop efficient stormwater management
Reduce heat island effect
Provide stewardship of nature and the site’s surroundings
Reduce light pollution or minimize light trespass from the building and site
Types of Smart Location & Linkage
Smart Growth Protect Habitat Redevelop Brownfield Sites Use Infill Development Develop in Dense Areas
Brownfield
Previously used or redeveloped land that may be contaminated with hazardous waste or pollution
Infill Development
A previously developed site, one that was previously built on, has been graded, or contained a parking lot, roadway, or other structure
Bioswale
A stormwater control feature that uses a combination of a engineered basin, soils, and veg to slow and detain stormwater, increase groundwater recharge, and reduce peak stormwater runoff
Dry Ponds
Excavated areas that detain storm water and slow runoff but dry between rain events. Wet ponds serve a similar function but are designed to hold water all the time
Floodplain
Land that’s likely to be flooded by a storm of a given size
Rain Garden
A stormwater management feature consisting of an excavated depression and veg that collects and filters runoff and reduce peak discharge rates
Heat Island Effect
Heat islands are temperature differences between developed and undeveloped areas. heat island effect is created when developed areas have higher temperatures than surrounding rural areas.
strategies to reducing heat islands:
Minimizing the development footprint
Undercover / underground parking
Using hardscape materials with high reflectance
Covering roofs with high SRI material
Installing green roofs
Providing shade from trees, structures covered by solar panels, or architectural
devices with high SRI material
Using open - grid paving
Solar Reflectance Index (SRI)
(also called albedo) measures a surface materials ability to reflect sunlight on a scale of 0 to 1, with black paint having a solar reflectance of 0, and white
paint having a solar reflectance of 1
Emissivity
Measures how much heat or infrared radiation a material is able to shed back into the atmosphere
Best Strategy to reduce the heat island effect
is to minimize the development footprint
Floor Area Ratio (FAR)
is the ratio of the total floor area of the buildings on a certain location to the size of the land of that location, or the limit imposed on such a ratio
FAR = the total building square footage (building area) divided by the site size square footage (site area).