Application of Hazen Williams Equation: Calculating Unit Headloss in a PVC Pipeline

What is the unit headloss (ft/1,000 ft) expected in a 16-in diameter of a PVC pipeline (C = 130) carrying 2700 gpm?

The unit headloss expected in a 16-inch diameter PVC pipeline carrying 2700 gpm is approximately 938.6 ft/1,000 ft.

To calculate the unit headloss (hL) in ft/1,000 ft using the Hazen-Williams equation, we can substitute the given values into the equation:
hL = 10.67 * (Q/C)^1.852 * D^4.87

Given:
Converting the diameter from inches to feet:
D = 16 inches * (1 ft/12 inches) = 1.33 ft

Substituting the values into the equation:
hL = 10.67 * (2700/130)^1.852 * (1.33)^4.87

Calculating the unit headloss:
hL = 10.67 * (20.77)^1.852 * (1.33)^4.87

Simplifying the equation:
hL ≈ 10.67 * 20.77 * 1.33^4.87

Calculating the value:
hL ≈ 10.67 * 20.77 * 4.47
hL ≈ 938.6 ft/1,000 ft

Therefore, the unit headloss expected in a 16-inch diameter PVC pipeline carrying 2700 gpm is approximately 938.6 ft/1,000 ft.

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