San Francisco Building Inspection Commission Codes Ch. 14 Exterior Walls

SECTION 1402 – PERFORMANCE REQUIREMENTS

1402 Add a section as follows:

1402.11 Projections and appendages. Provisions shall be made at the outer edge of all projections and appendages to control rainwater backflow under the projection. Ventilation shall be provided for all enclosed spaces of exposed soffits, bays and other projections in wood framed construction.

Where an uncovered balcony or deck with an impervious surface exceeds 200 square feet (18.58 m² ) in area, drainage shall be conveyed directly to a building drain or building sewer or be conveyed to an approved alternate location based on approved geotechnical and engineering design.