Coffee Break Training: Access and Water Supplies: Fire Flow Formulas: Part 13: Insurance Services Office Needed Fire Flow: Exposure Factor Values [open pdf - 561KB]
The learning objective of this Coffee Break Training is that "the student will be able to obtain the 'exposure factor' variable, Xi, from the Insurance Services Office (ISO) Needed Fire Flow (NFF) formula exposure factor table."
Coffee Break Training - Fire Protection Series No. FP-2013-48
United States Fire Administration: http://www.usfa.fema.gov/