FAE Questions and Answers 100% Correct |
Updated 2024
Formula for Calculating GPM - ANSWER 29.7 x d^2 x √NP
psi of S.S. - ANSWER 50 psi
psi of S.S. Master Stream - ANSWER 80 psi
psi of Fog - ANSWER 100 psi
Givens: Friction loss per 100 ft for 1 3/4" flowing 150 GPM - ANSWER 32 psi
Givens: Friction loss per 100 ft for 2 1/2" flowing 250 GPM - ANSWER 15 psi
Rule for calculating psi relating to elevation - ANSWER + 5 per floor going up
- 5 per floor going down
F.L. Formula for 1 1/2" per 100 ft. - ANSWER (2Q^2 + Q) * 4
F.L. Formula for 1 3/4" per 100 ft. - ANSWER (10Q^2) + 10
F.L. Formula for 2 1/2" per 100 ft. - ANSWER (2Q^2 + Q)
, F.L. Formula for 3" per 100 ft. - ANSWER (2Q^2 + Q) x .4
F.L. Formula for 3 1/2" per 100 ft. - ANSWER (2Q^2 + Q) x .17
F.L. Formula for 4" per 100 ft. - ANSWER (2Q^2 + Q) x .1
F.L. Formula for 4 1/2" per 100 ft. - ANSWER (2Q^2 + Q) x .05
F.L. Formula for 5" per 100 ft. - ANSWER (2Q^2 + Q) x .03
GPM of 1" tip - ANSWER 200 GPM
GPM of 1 1/8" tip - ANSWER 250 GPM
GPM of 1 1/4" tip @ 50 psi - ANSWER 300 GPM
GPM of 1 1/4" tip @ 80 psi - ANSWER 400 GPM
GPM of 1 3/8" tip - ANSWER 500 GPM
GPM of 1 1/2" tip - ANSWER 600 GPM
GPM of 1 5/8" tip - ANSWER 700 GPM
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