scvurppp gsi details workshop #2 april 24, 2018 stormwater...

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

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

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

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

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

DC Concept - Before

Graphic courtesy of Washington DC DOT

DC Concept - After

Graphic courtesy of Washington DC DOT

Roadside Planter with Parking

SFPUC Detail BP 2.1

Photo courtesy of City of San Jose

Street Planter with Parking

Central Coast LIDI Detail SW-2

El Cerrito –Street Planter with Parking

El Cerrito – Street Planter

Sloped Sided Bioretention with Parking

Detail image courtesy of Daniel Apt, Olaunu

Central Coast LIDIDetail SW-1

Hacienda Ave Planters

Graphics/photos courtesy of Callendar Associatesand City of Campbell

Hacienda Ave Planters

Photo courtesy of City of Campbell

Roadside Planter without Parking

SFPUC Detail BP 3.1

Street Planter without Parking

Central Coast LIDIDetail SW-4

Cesar Chavez St. SF

Street Sloped Sided Bioretentionwithout Parking

Central Coast LIDIDetail SW-3

Curb Inlets - Ineffective

Better Curb Inlet

From SFPUC Detail BC 2.2

Better Curb Inlet

Cesar Chavez St., San Francisco

Better Curb Inlet - Section

From SFPUC Detail BC 2.2

Alternative Curb Inlet

Central Coast LIDIDetail SW-17

Inlet to Trench Drain

From SFPUC Detail BC 3.3

Check Dams

From SFPUC Detail BC 6.2

Check Dams, cont.

From SFPUC Detail BC 6.2

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

Parking Lot Sloped Sided Bioretention

Central Coast LIDIDetail SW-6

Detail

Detail image courtesy of Daniel Apt, Olaunu

Parking Lot Planter

Central Coast LIDIDetail SW-7

Parking Lot Bioretention

Photos courtesy of City of San Jose

Sloped-sided Planter

Parking Lot Edge Options

Deep Curb

Curb and Gutter

Flush Curb with Wheel Stops

Central Coast LIDIDetail SW-16

Questions?

Jill Bicknell, P.E.408-720-8811 x1

jcbicknell@eoainc.com