San Francisco County Municipal Code Ch. 9 Fire Protection [ ← ] Systems

SECTION 901 – GENERAL 901.4 Add a second paragraph as follows: Notwithstanding any other provisions of the California Building Code or other codes or regulations, Fire Department connections shall have 3- inch (76.2 mm) National Standard hose threads. SECTION 903 – AUTOMATIC SPRINKLER SYSTEMS 903.2.8 Add exception 5 as follows: 5. An automatic residential fire sprinkler system shall not be required when additions or alterations are made to existing townhouses, one- and two- family dwellings not more than three stories above grade plane that do not have an automatic residential fire sprinkler system installed. [California Residential Code Sections R101.2, R309.1, R309.2] Table 903.2.11.6 Add a line to the end of the Table as follows: TABLE 903.2.11.6 ADDITIONAL REQUIRED [ ← ] SUPPRESSION SYSTEMS

SECTION SUBJECT 3202.3.4 Pedestrian Walkways over Public Streets

SECTION 907 – FIRE ALARM AND DETECTION SYSTEMS 907.2.9.1 Revise Item 3 and Item 4 as follows: 3. The building contains more than [ ← ] 6 dwelling units or sleeping units. 4. Congregate living facilities or congregate residences [ ← ] three or more stories in height or having an occupant load of 11 or more. 907.2.9 Add the following section: 907.2.9.5 Automatic smoke detection system. An automatic smoke detection system that activates the occupant notification system in accordance with Section 907.5 shall be installed throughout all interior corridors serving sleeping units. Exceptions:

1. An automatic smoke detection system is not required in buildings that do not have interior corridors serving sleeping units and where each sleeping unit has a means of egress door opening directly to an exit or to an exterior exit access that leads directly to an exit.
2. An automatic smoke detection system is not required in buildings when all of the following conditions are met:

907.2.11.2 Add the following section: 907.2.11.2.7 Group R-3 Congregate Living Facilities. Group R-3 congregate living facilities having an occupant load of 6 or more shall be provided with a manual fire alarm system. SECTION 912 – FIRE DEPARTMENT CONNECTIONS 912 Add the following section: 912.7 Number of connections required. Sprinkler systems requiring a 4-inch (101.6 mm) or larger water service shall have two or more inlet connections as necessary to meet hydraulic demand.