B105.4 - Land Subdivision Projects.

For the subdivision of undeveloped land for other than single-family dwellings, due to the undetermined building size and type of construction, the required fire-flow shall be 4,000 gallons per minute (15,141.6 L/min) for a duration of four hours with public hydrant spacing of 300 feet (91.44 m). The required fire-flow for the subdivision of land consisting of lots having existing structures shall be in accordance with Table B105.1(2) for fire-flow and duration.

(Ord. 2017-0003 § 261, 2017.)

Table B105.1(1)
Required Fire Flow for One- and Two-Family Dwellings and Group R-3 Buildings

FIRE-FLOW CALCULATION AREA (square feet)	AUTOMATIC SPRINKLER SYSTEM (Design Standard)	MINIMUM FIRE-FLOW (gallons per minute)	FLOW DURATION (hours)
0-3,600	No automatic sprinkler system	1,000	1
3,601 and greater	No automatic sprinkler system	Value in Table B105.1(2)	Duration in Table B105.1(2) at the required fire-flow rate
0-3,600	Section 903.3.1.3 of the Los Angeles County Fire Code or Section R313.3 of the Los Angeles County Residential Code	500	1/2
3,601 and greater	Section 903.3.1.3 of the Los Angeles County Fire Code or Section R313.3 of the Los Angeles County Residential Code	1½ value in Table B105.1(2)	1

 

For SI:_ 1 square foot = 0.0929 m , 1 gallon per minute = 3.785 L/m.

(Ord. 2017-0003 § 262, 2017.)

Table B105.2
Required Fire Flow for Buildings Other Than One- and Two-Family Dwellings, and Group R-3 Buildings

AUTOMATIC SPRINKLER SYSTEM (Design Standard)	MINIMUM FIRE-FLOW (gallons per minute)	FLOW DURATION (hours)
No automatic sprinkler system	Value in Table B105.1(2)	Duration in Table Bl05.1(2)
Section 903.3.1.1 or 903.3.1.2 of the Los Angeles County Fire Code	50% of the value in Table B 105.1(2) a	Duration in Table B 105.1(2) at the reduced flow rate

 

For SI: 1 gallon per minute = 3.785 L/m.

a. The reduced fire-flow shall be not less than 1,500 gallons per minute.

(Ord. 2017-0003 § 263, 2017.)