Modified Hazen-Williams Formula

by Akalank K. Jain, Sr. Research Fellow; Dept. of Civ. Engrg., Univ. of Roorkee, Roorkee, on deputation from Government Coll. of Engrg. and Tech., Raipur (M.P.), India,
P. Khanna, Reader in Civ. Engrg.; Univ. of Roorkee, Roorkee, India,
D. M. Mohan, Post-Grad. Student; Environmental Engrg., Univ. of Roorkee, Roorkee, India,

Serial Information: Journal of the Environmental Engineering Division, 1978, Vol. 104, Issue 1, Pg. 137-146

Document Type: Journal Paper


The limitations of Hazen-Williams formula, which is widely used by the environmental engineers, have been indentified in quantitative terms. An accurate formula, similar to that of Hazen-Williams, based on explicit relationship for pipe diameter and Colebrook's equation for friction factor has been obtained. A nomograph based on the proposed formula has been presented in a readily usable form.

Subject Headings: Environmental issues | Pipelines | Friction

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