The Fire Protection Research Foundation report: "Determination of Fire Hose Friction Loss Characteristics," has been issued and is now available. The report was authored by Joseph L. Scheffey, Eric W. Forssell and Matthew E. Benfer.
The calculation of friction loss in fire hose is a common task for fire fighters responsible for operating fire apparatus pumps. This is required to deliver water at the proper flow rate and pressure to fire fighters controlling the fire hose nozzle. Pressures and flow rates too low will be insufficient for fire control, while pressures and flow rates too high create dangerous conditions with handling the nozzle, burst hose and other hazards.
Baseline friction loss coefficients used by today’s fire fighters for calculating fire hose pressure loss were derived using hose design technology from upwards of 50 years ago. A need exists to update these coefficients for use with today’s fire hose. Modern fire hose is generally perceived by fire fighting professionals as having less friction loss and different performance characteristics than the hose on which these coefficients were originally based. The focus of this study has been to develop baseline friction loss coefficients for the types of fire hose commonly used by today’s fire service, and identify any additional performance characteristics that should be considered for friction loss calculations.
The full report is also available, "Determination of Fire Hose Friction Loss Characteristics". All Fire Protection Research Foundation reports can be downloaded for free. Printed copies are $50, except where otherwise noted. If all reports in a subject category are requested, a 20% discount applies. Please pre-pay by check or money order to the The Fire Protection Research Foundation. You may also pay using VISA, Mastercard or American Express. E-mail the Foundation or call +1 617 984-7443.