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<br />A = effective area <br />C = construction coefficient* <br />o = occupancy factor* <br />E = exposure factor* <br />M = communication factor* <br />F = required flow <br /> <br />F= 18(0)(E)(M)(C)(-VA) <br /> <br />The effective area is the sum of 100% of the ground floor and 50% of all additional floors. The <br />final result is rounded to the nearest 250 gpm up to 2500 gpm and to the nearest 500 gpm <br />beyond 2500 gpm. <br /> <br />*See the ISO Fire Suppression Rating Schedule for details on calculation. <br /> <br />Residential Construction <br /> <br />For one and two family dwellings not exceeding two stories in height, the following fire flows <br />shall be used. <br /> <br />Distance between buildin s <br />Over 100 feet <br />31 - 100 feet <br />11 - 30 feet <br />10 feet or less <br /> <br />Required fire flow <br />500 g m <br />750 m <br />1000 m <br />1500 gpm <br /> <br />Commercial Construction <br /> <br />Maximum square footage by construction type and gpm fire flow (without modification for <br />occupancy and exposures) <br /> <br />GPM Fire Resistive Non-Combustible Ordinary Frame <br />1500 22,611 12,719 8,140 3,618 <br />1750 30,109 16,936 10,839 4,817 <br />2000 38,678 21,756 13,924 6,188 <br />2250 48,319 27,179 17,395 7,731 <br />2500 59,031 33,205 21,251 9,445 <br />3000 83,671 47,065 30,122 13,387 <br />3500 112,598 63,336 40,535 18,016 <br />4000 145,811 82,019 52,492 23,330 <br />4500 183,311 103,112 65,992 29,330 <br /> <br />- 13 - <br />