Coffee Break Training: Access and Water Supplies: Fire Flow Formulas: Part 11: Insurance Services Office Needed Fire Flow Formula: Occupancy Factor Examples [open pdf - 549KB]
"According to the ISO 'Guide for Determination of Needed Fire Flow,' the maximum total area containing combustible material in an otherwise noncombustible contents occupancy (Class C-1) is 5 percent of the total area of that occupancy. For more information on fire flow, you can take the National Fire Academy online class 'Testing and Evaluation of Water Supplies for Fire Protection' (Q0218) at http://1.usa.gov/12JypCa. You can download the ISO 'Guide for Determination of Needed Fire Flow' from www.iso.com."
Coffee Break Training - Fire Protection Series No. FP-2013-46
United States Fire Administration: http://www.usfa.fema.gov/