Fire Ground

GPM (fireground)

100

1 3/8" @ 80PSI

500 GPM

200

2" @ 100psi

1200GPM

300

7/8" @ 50psi

150GPM

400

1 1/2" @80psi

600

500

1 3/16" @50psi

300gpm

Equations

100

FL=C _ L

Q²

200

GPM= 29.7xd²x__

Square root NP

300

PDP= __+TPL

NP

400

TPL=__+FL

EP

500

Q=___/100

GPM

Initial attack pressure

100

Bumper Line

135psi

200

Crosslay (Automatic nozzle)

170psi

300

Crosslay (smoothbore nozzle)

110psi

400

Rear 2 1/2" preconnect

85psi

500

Skid Load w/ 200' 3" on the ground

93psi