21st St

Location |
San Francisco, CA
Client |
21st Street, LLC
Designer |
Completion Date |
-
Our clients are interested in integrating water re-use into a new residence on a sloped site which lies on bedrock without infiltration. We provided civil engineering and integrated water and building systems engineering, working with the architect and landscape architect to seamlessly combine innovative infrastructure with a strong formal design.

All graywater flows passively into a large biofilter at the low-point of the site, where vegetation surrounds an outdoor deck; pressurized irrigation lines send treated water to a series of 4 living roofs, where secondary treatment occurs through our customized "blue roof" system (up to 5" of graywater are held in aerobic and anaerobic conditions, which simulates a tidal wetland where plants and soil decompose remaining organic compounds). In this way, roof run-off combines treated graywater and rainwater into a storage tank sized to serve as a source for indoor toilet flushing and laundry, while simultaneously providing space to accommodate stormwater retention on our site and offset run-off.
Tags |
blue roof
green roof
civil
landscape
greywater
irrigation
green infrastructure
greywater
living roof
permit coordination
wastewater
construction
residential

21st St

Location |
San Francisco, CA
Client |
21st Street, LLC
Designer |
Completion Date |
-
Our clients are interested in integrating water re-use into a new residence on a sloped site which lies on bedrock without infiltration. We provided civil engineering and integrated water and building systems engineering, working with the architect and landscape architect to seamlessly combine innovative infrastructure with a strong formal design.

All graywater flows passively into a large biofilter at the low-point of the site, where vegetation surrounds an outdoor deck; pressurized irrigation lines send treated water to a series of 4 living roofs, where secondary treatment occurs through our customized "blue roof" system (up to 5" of graywater are held in aerobic and anaerobic conditions, which simulates a tidal wetland where plants and soil decompose remaining organic compounds). In this way, roof run-off combines treated graywater and rainwater into a storage tank sized to serve as a source for indoor toilet flushing and laundry, while simultaneously providing space to accommodate stormwater retention on our site and offset run-off.
Tags |
blue roof
green roof
civil
landscape
greywater
irrigation
green infrastructure
greywater
living roof
permit coordination
wastewater
construction
residential

21st St

Author |
Story Excerpt:
READ THE STORY ON MEDIUM HERE
Tags |
blue roof
green roof
civil
landscape
greywater
irrigation
green infrastructure
greywater
living roof
permit coordination
wastewater
construction
residential
No items found.

Media |
Media Date |
Media Summary:
Tags |
blue roof
green roof
civil
landscape
greywater
irrigation
green infrastructure
greywater
living roof
permit coordination
wastewater
construction
residential

21st St

Location |
San Francisco, CA
Client |
21st Street, LLC
Designer |
Completion Date |
-
Our clients are interested in integrating water re-use into a new residence on a sloped site which lies on bedrock without infiltration. We provided civil engineering and integrated water and building systems engineering, working with the architect and landscape architect to seamlessly combine innovative infrastructure with a strong formal design.

All graywater flows passively into a large biofilter at the low-point of the site, where vegetation surrounds an outdoor deck; pressurized irrigation lines send treated water to a series of 4 living roofs, where secondary treatment occurs through our customized "blue roof" system (up to 5" of graywater are held in aerobic and anaerobic conditions, which simulates a tidal wetland where plants and soil decompose remaining organic compounds). In this way, roof run-off combines treated graywater and rainwater into a storage tank sized to serve as a source for indoor toilet flushing and laundry, while simultaneously providing space to accommodate stormwater retention on our site and offset run-off.
Tags |
blue roof
green roof
civil
landscape
greywater
irrigation
green infrastructure
greywater
living roof
permit coordination
wastewater
construction
residential