Firefighter Math · Question
Scenario 59: Friction loss formula commonly used: FL = C × Q^2 × L. For a 1¾'' line (C=15.5), Q=1.5 (150 GPM in hundreds), L=2 (200 ft / 100):
FL = 15.5 × 1.5^2 × 2 = 15.5 × 2.25 × 2 = 69.75 ≈ 70 psi. The correct answer is "~70 psi". This reflects the accepted standard for the firefighter-math assessme
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Question: Scenario 59: Friction loss formula commonly used: FL = C × Q^2 × L. For a 1¾'' line (C=15.5), Q=1.5 (150 GPM in hundreds), L=2 (200 ft / 100):
Answer options:
- ~23 psi
- ~35 psi ✅ ~70 psi
- ~140 psi
Correct answer: ~70 psi
Explanation: FL = 15.5 × 1.5^2 × 2 = 15.5 × 2.25 × 2 = 69.75 ≈ 70 psi. The correct answer is "~70 psi". This reflects the accepted standard for the firefighter-math assessment and aligns with the official handbook for this competency. The correct answer is "~70 psi". This capacity-fill scenario 59 reinforces the same competency for the firefighter-math bank and follows the certified explanation standard.
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