A pressure test reads 30 psi and the field conversion given is 2.31 feet of head per psi. What head is represented?
Correct Answer
A) 69.3 feet.
Thirty psi times 2.31 feet per psi equals 69.3 feet of head.
Why This Is the Correct Answer
Thirty psi times 2.31 feet per psi equals 69.3 feet of head.
Why the Other Options Are Wrong
Option B: 30.0 feet.
30.0 feet. is below the supported result for pressure head conversion; it likely omits allowance, conversion, coverage, or final round-up.
Option C: 46.2 feet.
46.2 feet. is below the supported result for pressure head conversion; it likely omits allowance, conversion, coverage, or final round-up.
Option D: 92.4 feet.
92.4 feet. is above the supported result for pressure head conversion; it likely double-counts allowance, uses the wrong unit, or rounds too early.
Memory Technique
Measure to psi, adjust for times, then let Comparing Pump set the finish line.
Reference Hint
Study anchor (closed-book): memorize Pressure head conversion from California Plumbing Code, California Code of Regulations Title 24. / Title 24 California Plumbing Code pressure and head concepts; know the rule or calculation trigger without relying on exam-room lookup.
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