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Hazen Williams C
Hazen-Williams roughness coefficients (C values) for pressure pipe hydraulic calculations. Covers new and aged pipe materials: ductile iron (cement-lined/unlined), cast iron at 0/5/10/20/30/40 years, carbon steel (new/corroded/lined), copper, brass, PVC, HDPE, CPVC, FRP, concrete, asbestos cement, galvanized steel, stainless steel, lead, vitrified clay. Includes AWWA M31 and NFPA 13 design C values. C value ranges (min/typical/max) and recommended design values are provided.
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Ductile Iron Cement Lined3 rowsDuctile Iron Unlined3 rowsCast Iron Unlined6 rowsCast Iron Cement Lined2 rowsCarbon Steel New1 rowCarbon Steel Corroded Mild1 rowCarbon Steel Corroded Heavy1 rowCarbon Steel Coal Tar Lined1 rowCopper Tube2 rowsBrass Pipe1 rowPVC Schedule2 rowsHDPE SDR2 rowsCPVC Pipe1 rowFRP Fiberglass1 rowConcrete Cylinder Pipe2 rowsConcrete Noncylinder1 rowAsbestos Cement2 rowsGalvanized Steel2 rowsStainless Steel 304 3162 rowsLead Pipe1 rowVitrified Clay1 rowFire Hose Rubber Lined1 rowDesign AWWA New Main1 rowDesign AWWA Existing System1 rowDesign NFPA13 Sprinkler1 rowDesign Fire Protection Steel1 row