Needed fire flow (NFF) is the amount of water that should be available for providing fire protection at selected locations throughout a community. ISO has prepared a guide for estimating NFF. The publication requires knowledge and experience in fire protection engineering for its effective application.
You can download a copy of the Guide for Determination of Needed Fire Flow. The document is a PDF file of approximately 90KB. You can view or print the file with a free Adobe® Acrobat® Reader.
For information about your own community’s public fire protection, a customized Public Protection Classification (PPC®) report is available from ISO. The report includes a list of the NFFs for all the commercial occupancies ISO has on file for your community, as well as details of the latest review of your community’s fire protection services (your PPC grading). The report is available only to your community’s fire chief or chief administrative official.
ISO also provides direct access to individual NFFs and much more information at the Fire Chiefs Online website.