scvurppp gsi details workshop #2 april 24, 2018 stormwater...
TRANSCRIPT
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Stormwater Planter:Details
Jill Bicknell, P.E., EOA, Inc.Santa Clara Valley Urban Runoff Pollution
Prevention Program (SCVURPPP)
SCVURPPP GSI Details Workshop #2April 24, 2018
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Outline of Presentation Stormwater Planter Design Considerations
Streetscape Planter Details• Parking vs. no parking along curb
• Planter box vs. sloped sided
• Curb inlets and check dams
Parking Lot Planter Details• Planter box vs. sloped sided
• Edge options
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Stormwater Planter DesignConsiderations
Bioretention facilities similar to stormwater curb extensions but typically in the parkway zone of street (next to sidewalk)
Can also be in flexible zone (to separate bike lane from street) or in median if reverse crowned
Can fit between existing features in park-way zone (e.g., driveways, street fixtures)
Less interference with cyclists and parking but need to consider pedestrian safety and access
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Design Considerations, cont. Bioretention Streetscape Planter
• Can have vertical or sloped sides
• May need short fences, curb, or step-out zone to prevent pedestrians from falling into depressed area
• When next to street parking, step-out zone of 12-36 inches should be provided
• Should also provide crossing areas between street parking and sidewalk
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Bioretention Streetside Planter
Graphic courtesy of Washington DC DOT
Note:• Step-out zone along
street• Curb cuts and
trench drains directing runoff into planter
• Pedestrian crossing• Fence or curb
surrounding planter
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DC Concept - Before
Graphic courtesy of Washington DC DOT
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DC Concept - After
Graphic courtesy of Washington DC DOT
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Roadside Planter with Parking
SFPUC Detail BP 2.1
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Photo courtesy of City of San Jose
Street Planter with Parking
Central Coast LIDI Detail SW-2
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El Cerrito –Street Planter with Parking
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El Cerrito – Street Planter
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Sloped Sided Bioretention with Parking
Detail image courtesy of Daniel Apt, Olaunu
Central Coast LIDIDetail SW-1
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Hacienda Ave Planters
Graphics/photos courtesy of Callendar Associatesand City of Campbell
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Hacienda Ave Planters
Photo courtesy of City of Campbell
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Roadside Planter without Parking
SFPUC Detail BP 3.1
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Street Planter without Parking
Central Coast LIDIDetail SW-4
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Cesar Chavez St. SF
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Street Sloped Sided Bioretentionwithout Parking
Central Coast LIDIDetail SW-3
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Curb Inlets - Ineffective
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Better Curb Inlet
From SFPUC Detail BC 2.2
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Better Curb Inlet
Cesar Chavez St., San Francisco
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Better Curb Inlet - Section
From SFPUC Detail BC 2.2
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Alternative Curb Inlet
Central Coast LIDIDetail SW-17
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Inlet to Trench Drain
From SFPUC Detail BC 3.3
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Check Dams
From SFPUC Detail BC 6.2
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Check Dams, cont.
From SFPUC Detail BC 6.2
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Design Considerations Bioretention Parking Lot Planter
• Can have vertical or sloped sides
• Optimize flat bottom dimensions, and use check dams if longitudinal slope
• No step-out zone needed
• Provide crossing areas for people walking through the parking lot
• Use curbs or wheel stops to keep car wheels from the edge
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Parking Lot Sloped Sided Bioretention
Central Coast LIDIDetail SW-6
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Detail
Detail image courtesy of Daniel Apt, Olaunu
Parking Lot Planter
Central Coast LIDIDetail SW-7
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Parking Lot Bioretention
Photos courtesy of City of San Jose
Sloped-sided Planter
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Parking Lot Edge Options
Deep Curb
Curb and Gutter
Flush Curb with Wheel Stops
Central Coast LIDIDetail SW-16