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LID opportunities in industrial, commercial and multi-residential types (view source)
Revision as of 17:50, 26 September 2017
, 6 years agono edit summary
==High-rise and mid-rise sites==
==High-rise and mid-rise sites==
[[File:High_Rise_Mid_Rise_Options.png|thumb|LID options for high-rise and mid-rise sites]]
Mid- and high-rise sites (four storeys or more) share common features. These buildings are often for residential use and include apartments or condominiums. They may be operated by residential leasing companies or condominium associations. Many office buildings belong to this site category. Office
Mid- and high-rise sites (four storeys or more) share common features. These buildings are often for residential use and include apartments or condominiums. They may be operated by residential leasing companies or condominium associations. Many office buildings belong to this site category. Office
buildings may be operated by an independent site owner, but they are often owned and operated by commercial land management groups.
buildings may be operated by an independent site owner, but they are often owned and operated by commercial land management groups.
===Roof areas===
===Roof areas===
In most municipalities, the rooftops of mid- and high-rise buildings are not very visible. Developing LID practices on these surfaces will provide benefits but will be more difficult to promote. The exception is major urban centres where a significant number of high rises have been developed and sometimes look onto each other.
In most municipalities, the rooftops of mid- and high-rise buildings are not very visible. Developing LID practices on these surfaces will provide benefits but will be more difficult to promote. The exception is major urban centres where a significant number of high rises have been developed and sometimes look onto each other.
==Low-rise residential sites==
[[File:Example.jpg|thumb|text]]
Low-rise residential sites include townhouses and apartment complexes that are fewer than four storeys. These sites can be operated by property management groups or by condominium boards. Common landform features of low-rise residential sites include small parking lots, and significant pedestrian and landscaped areas. Townhouses have peaked roofs with external drainage while low-rise apartment complexes have flat roofs with internal drainage.
===Landscaped areas===
Low-rise residential sites typically have significant landscaped areas. On townhouse sites landscaped areas tend to be spread across the complex as gardens, parking islands, and strips of lawn. Park or community green spaces areas may also be present on these sites. Due to lot grading, it may not be practical to convey road and parking lot runoff to landscaped areas to the building’s perimeter. These areas can, however, be retrofitted to provide water balance benefits by infiltrating roof runoff via bioretention, soakaways, or bioswales.
On sites with larger green spaces LID practices that accept runoff from more substantial catchment areas will likely be feasible. Parks can be retrofitted with most LID options. Subsurface LID options like infiltration chambers can be used without sacrificing park function, while highly visible practices like bioswales or bioretention enhance the aesthetic value.