Written by: Lt. Brad Dougherty

You are the driver operator of Engine Company 15 you are operating your apparatus at a working apartment fire at 1233 Impeller Drive. The fire is a room and contents fire in the bedroom on the 5th floor located in apartment 502. You have connected two fifty foot sections of three inch line to the stand pipe from your number one and number three discharge. The officer has taken a fifty foot roll of three inch with a gated wye attached  and the two firefighters each have (1)  one hundred foot 1 1/2 inch high rise pack which are carried to the stair well below the fire floor and connected to the stand pipe they will be flowing the 1 1/2 lines at one hundred and twenty five gallons per minute out of an (2) 1 1/2 adjustable gallonage nozzles. Figure your friction loss using your organizations SOP for all pieces of hose involved in this operation.

Authors friction loss calculations to follow.