Water Supply & DistributionQuestion 42 of 360
When calculating developed length for water pipe sizing, what does developed length include?
a.Only the straight horizontal run
b.The total length measured along the centerline of the pipe including all changes in direction, plus equivalent lengths for fittings
c.Only the vertical rise
d.Only the distance from the meter to the first fitting
Explanation
Developed length is the actual measured length along the pipe centerline including all bends and rises, and friction sizing adds equivalent lengths for fittings and valves. Limiting it to only horizontal run, only vertical rise, or only the first fitting would understate the true friction length.
Law Reference: 2022 California Plumbing Code (CPC) §610.0Practice all 360 questions free — no signup required.
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