Engineering

Plumbing Piping

6 calculators, each computed live and cited on the page.

Fixture Unit Sizing Calculator

Plumbing Piping

Converts drainage or water fixture units to peak demand and a recommended pipe size. Use it for a first-pass plumbing pipe sizing.

Natural Gas Pipe Sizing Calculator

Plumbing Piping

Sizes natural-gas pipe by the longest-length method from the required capacity in cubic feet per hour and the allowable pressure drop. Use it for a first-pass gas pipe sizing.

Pipe Expansion Support Calculator

Plumbing Piping

Computes thermal expansion, guided-cantilever loop sizing and support spacing by stress and deflection. Use it for pipe expansion and support layout.

Pipe Pressure Drop Calculator

Plumbing Piping

Computes pipe pressure drop and head loss by Darcy-Weisbach with the Colebrook friction factor, alongside Hazen-Williams, with velocity and Reynolds number. Use it to check a liquid pipe run.

Pump Head Power Calculator

Plumbing Piping

Computes total dynamic head, hydraulic and brake power and the NPSH margin for a pump, with the system curve. Use it to select and check a pump.

Tank Volume Calculator

Plumbing Piping

Computes full and partial volume for horizontal and vertical tanks with various heads, and a dip chart. Use it to gauge tank contents.

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