Free Online Hazen-Williams Pipe Head Loss Calculator

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Hazen-Williams Pipe Head Loss at Given Diameter, Roughness, and Flow

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Inputs

Flow, Q		X
Pipe diameter, d₀		X
Pipe length, L		X
Hazen-Williams coefficient, C		X
Total combined junction loss coefficient, k		X
Downstream EGL		X

Results

Flow area, a	Flow area, a		X
Wetted perimeter, P_w	Wetted perimeter, P_w		X
Hydraulic radius, R_h	Hydraulic radius, R_h		X
Velocity, v	Velocity, v		X
Velocity head, h_v	Velocity head, h_v		X
Friction slope	Friction slope		X
Average shear stress (tractive force), tau	Average shear stress (tractive force), tau		X
Friction loss, H_f	Friction loss, H_f		X
Junction loss, H_m	Junction loss, H_m		X
Total loss, H_l	Total loss, H_l		X
Downstream HGL	Downstream HGL		X
Upstream EGL	Upstream EGL		X
Upstream HGL	Upstream HGL		X

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