Difference between revisions of "Bioretention: Parking lots"
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===Winter maintenance=== | ===Winter maintenance=== | ||
| − | Salt can be damaging to the planting in parking lot bioretention. To help | + | Salt can be damaging to the planting in parking lot bioretention. To help minimize this, bioretention practices adjacent to parking areas should always have an [[underdrain]] and salt use be reduced through good design and planning of the [[salt management| parking lot]]. |
==Gallery== | ==Gallery== | ||
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*[[Choking layer]] | *[[Choking layer]] | ||
*[[Reservoir_aggregate|Reservoir]] | *[[Reservoir_aggregate|Reservoir]] | ||
| + | *[[underdrain]] | ||
Revision as of 19:33, 15 January 2019
On commercial, industrial and multi-unit developments, a popular choice is to integrate bioretention into parking lot landscaped areas. These distributed cells typically accept sheet flow through multiple curb cuts, have shallow depression storage ≤ 100 mm, and a total area of 5 -200 m2. Although many parking lot schemes include long linear bioretention cells (≥ 0.6 m wide), infiltration is optimized by having a level grade and a level base, unlike a bioswale.
Winter maintenance[edit]
Salt can be damaging to the planting in parking lot bioretention. To help minimize this, bioretention practices adjacent to parking areas should always have an underdrain and salt use be reduced through good design and planning of the parking lot.
Gallery[edit]
Parking lot bioretention with surface ponding well in foreground, Kortright Centre, Vaughan, ON. Read about the performance of this practice in the technical brief.
Parking lot bioretention sharing underground reservoir with adjacent permeable paving, Edwards Gardens, Toronto, ON. Read a case study about it here.
Parking lot bioretention with decorative stone for erosion control, and perforated pipe access standpipe in foreground, Earth Rangers Centre, Vaughan, ON. Read about the performance of this practice in the technical brief.
The sunken curb holds the edge of the asphalt pavement and lets water freely flow to the bioretention cell beside the 7sigma parking lot in Minneapolis, MN (USA)
Photo credit:Brian Ash
Bioretention cells on Elm Drive, Mississauga, ON, with vertical sides and hardscape perimeter receive road runoff via leader pipes from road catch basin inlets. Read about the stormwater system at this site in the performance assessment report.
The grade and lack of curb allow for sheet-flow runoff into this bioretention facility. Lakeside Park, Mississauga, ON
Bioretention cell receiving road and walkway runoff in a high density development setting.
Bioretention bump out in a dense urban setting receiving runoff via side inlet catch basin and curb openings on the walkway side of the installation.
Fairford Parkette featuring a bioretention cell retrofitted into a roadway in downtown Toronto, ON. Read a case study about it here.
Bioretention cell located in Waterfront Park in Ajax, ON.
Parking lot bioretention cell at IMAX corporate headquarters in Mississauga, ON. Read about the IMAX stormwater system in the performance assessment report
A curb extension bioretention cell in action during a major rain event.
Bioretention cell receiving road runoff in the Wychwood neighbourhood of Brampton, ON. The nearby catch basin conveys overflows during major rain events. Read about the stormwater system in this community in the performance assessment report.
Kortright Centre parking lot bioretention cell in action during a rain event, Vaughan, ON.
