Fire Fighting Hydraulic Formulas Exam
Questions And Answers
Friction Loss -
correct answer ✅FL = C · Q² · L
C - Coefficient
Q - GPM ÷ 100
L - Length of Hose ÷ 100
GPM for a Single Sprinkler Head -
correct answer ✅Q = ½P + 15
P - Pressure in PSI
Pressure for a Single Sprinkler Head -
correct answer ✅P = (Q-15)·2
Sprinkler System Total GPM -
correct answer ✅Total GPM = (½P+15) ·# of Heads·# of Minutes
P - Pressure in PSI
Nozzle Tip GPM -
correct answer ✅GPM = 29.7 · D² · √NP
D - Diameter of Nozzle Opening
Questions And Answers
Friction Loss -
correct answer ✅FL = C · Q² · L
C - Coefficient
Q - GPM ÷ 100
L - Length of Hose ÷ 100
GPM for a Single Sprinkler Head -
correct answer ✅Q = ½P + 15
P - Pressure in PSI
Pressure for a Single Sprinkler Head -
correct answer ✅P = (Q-15)·2
Sprinkler System Total GPM -
correct answer ✅Total GPM = (½P+15) ·# of Heads·# of Minutes
P - Pressure in PSI
Nozzle Tip GPM -
correct answer ✅GPM = 29.7 · D² · √NP
D - Diameter of Nozzle Opening
