David Baker Architects

THINK OUTSIDE THE BOX

HOW-TO: Green Outside the Property Line


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This raised crosswalk on Shotwell at 18th Street was put in to control flooding, but it has a great traffic calming effect as well.

Raised Crosswalks

This strategy is being used on smaller streets in San Francisco. It creates a message to drivers that they are in the pedestrian realm, slowing them down a bit. The design also creates a "speed table" which causes speeding vehicles to "hobby horse". This characteristic makes this device problematic to disabled advocates as it can cause pain to people with spinal injuries.

Shotwell Street sidewalk vegetated basin.

Permeable Sidewalks

The stormwater falling on sidewalks is considerable. Permeable basins and services can delay or eliminate this runoff from reaching the street and sewer systems. Both permeable paving, allowing for ADA compliant vehicle access where there is street parking, and planted basins can be used. They make the street edge of a building much more attractive as well.

This elegant permeable paving strip at our Richardson Apartments design infiltrates stormwater and provides bicycle parking. Image: Bruce Damonte

This bio-swale in Fairfax is designed to pick up the water from the city street to irrigate the plants and infiltrate into the water table, by-passing the piped storm water sewage system.

Bio-Swales

An engineered and planted collection area for storm water to filter, slow, and ideally re-infiltrate to the local aquifers.

Permeable pavers on the vehicle access mews at Blue Star Corner in Emeryville, California.

Permeable Paving

This type of treatment slows and allows the infiltration of storm water, while still allowing ADA compliant access.
Green Stair

The concept behind a green stair is a stair so nice you want to use it instead of the elevator. In a perfect world it has plants inside the stair, though this is not always possible due to the concerns of some code officials.

Academy of Sciences green roof by Rana Creek.

Green Roof

1. Reduce the urban "heat island" effect.

2. Filter and slow storm water runoff into the urban sewer system.

Slightly raised crosswalk in the Newcomb Street demonstration livable block in the Bayview, SF.

This raised crosswalk on Shotwell at 18th Street was put in to control flooding, but it has a great traffic calming effect as well.

This raised crosswalk also functions as a stormwater dyke on Lake Street in San Francisco.

Shotwell Street sidewalk vegetated basin.

PERMEABLE SIDEWALK: SF PGE permeable parkstrip.

Permeable pavers, decomposed granite granular surface, and concrete sidewalk make a handsome combination.

This elegant permeable paving strip at our Richardson Apartments design infiltrates stormwater and provides bicycle parking. Image: Bruce Damonte

Portland permeable park strip that allows pedestrian traffic, useful in a pedestrian retail area.

This bio-swale in Fairfax is designed to pick up the water from the city street to irrigate the plants and infiltrate into the water table, by-passing the piped storm water sewage system.

This bio-swale at Tassafaronga Village treats roof, sidewalk, and street storm water.

Permeable pavers on the vehicle access mews at Blue Star Corner in Emeryville, California.

Curbless alley in San Francisco by Jeff Miller. Some bollards are needed in this otherwise very succesful implementation.

Academy of Sciences green roof by Rana Creek.

The Academy of Sciences green roof uses native species that don't require irrigation.

The green roof at Tassafaronga Village.