Appendix 3 of the Green Infrastructure Design Guide includes sustainable streets typical details in PDF and AutoCAD file format. This page includes all of sustainable streets typical details in CAD file format for downloading and customization by design professionals for specific project applications.
Many cities and regions are developing their own design details for green infrastructure components, and including guidance for maintenance and utility issues. For the purpose of fulfilling the green infrastructure goals of local GI Plans, the San Mateo Countywide Water Pollution Prevention Program requested permission from the San Francisco Public Utilities Commission (SFPUC) to use their Green Infrastructure Typical Details as the base model details for the Green Infrastructure Design Guide.
Original SFPUC typical details in PDF and AutoCAD formats (in both 2007 and 2013 AutoCAD versions) may be found on the San Francisco Stormwater Management Requirements and Design Guidelines website. Design professionals should modify facility plan and section configurations, materials, and construction notes to address each project’s site conditions and meet project performance goals. The typical details are developed as “Not for Construction” drawings. Title blocks are provided for document organization and reference only.
To ensure that your use of the construction details and notes are site-specific, please include:
- Review and adjust plans, sections, and construction notes for site-specific design.
- Remove the SFPUC or Countywide Program GI Title Block from the details used in your set and replace it with a title that aligns with your project’s construction document nomenclature.
- Incorporate all detail call-outs and references into the construction documents so that the contractor will have all the information required to build the project.
- Do not reference the GI typical detail sheet name and/or number (i.e., BP 2.1) as a standard detail callout within the construction drawings.
- Do not expect contractors to conduct calculations or be responsible for missing design information.
- Some of the SFPUC details state “Optional” before an item in the detail. The use of the term “optional” is in reference to using the details for various situations. For instance, geogrid is only used for the bottom of pervious pavements and sand filters are required in the western portions of San Francisco that have a native sandy soil condition. The user/designer will need to review the details, purpose statement, designer notes & guidelines, designer checklist, construction notes, and other information and determine when “optional” items are necessary or should be removed.
- Exchange references to San Francisco and its codes and regulations, city/county departments, SFPUC logo, and revision to other elements specific to San Francisco for each jurisdiction that will be using these details, and the appropriate department, division, standard details and specifications, codes and regulations, logo, etc. will need to be used instead.
- Remove detailing and references to combined sewer system, if one is not present in your jurisdiction.
- Exchange “biotreatment” (Countywide Program term) for “bioretention” (SFPUC term) when used in relation to soil mix.
- Level of biotreatment soil compaction to be per jurisdiction standard.
- If new details are added, it is suggested to follow the same formatting, and provide explanations for Purpose, Designer Notes & Guidelines, Layout Requirements, and Designer Checklist; and similar plan, profile, and section layout, as well as update the navigation system and key bar on the related and appropriate detail sheets.
- For courtesy, please credit the SFPUC on the details and specifications for allowing public access and to use their documents.
- Credit the source jurisdiction on other model details, as appropriate, for the adapted use of their documents.
- Specify minimum of 18 inches depth of biotreatment soil.
- Specify minimum of 12 inches of class II permeable material at bottom of facility.
- Adjust ponding depth up to 12 inches as acceptable to your jurisdiction.
- Curb cut outlets and inlets to be a minimum of 18 inches wide, unless otherwise approved by your jurisdiction.
- For structural support, compact subgrade under stormwater sidewalls (only) per engineer specifications.
The following typical details have been developed and added as new San Mateo Countywide Program details to supplement the SFPUC green infrastructure typical detail set. These details are adapted from other leading national jurisdictions that integrate green infrastructure into their streets and environments or they have been modified from from SFPUC detail to reflect San Mateo County and local MRP requirements:
- Curb cut with metal plate top (at different inlet/outlet conditions
- Embedded rock energy dissipator
- Subsurface Infiltration System (Deep Dry Well, Small System)
- Alternate biotreatment soil media (BSM) area in bioretention basins In addition, a few of the SF PUC details have been modified
Note the text color for details that have been added to or modified from the SFPUC base details:
SMCWPPP Typical Details not in SFPUC Typical Details
SMCWPPP Typical Details Modified From SFPUC Typical Details
