Description

Performs hydraulic calculations using Hazen-Williams formula

There are 5 options:

• Calculates the head loss
• Calculates the pipe extension
• Calculates the flow
• Calculates the diameter
• Calculates the Hazen-Williams C factor

Material	Minimum $C$	Maximum $C$	Average $C$
Aluminum	130	150	140
Asbestos Cement	140	140	140
Asphalt Lining	130	140	135
Brass	130	140	135
Brick sewer	90	100	95
Cast-Iron - new unlined (CIP)	130	130	130
Cast-Iron 10 years old	107	113	110
Cast-Iron 20 years old	89	100	94.5
Cast-Iron 30 years old	5	90	47.5
Cast-Iron 40 years old	64	83	73.5
Cast-Iron, asphalt coated	100	100	100
Cast-Iron, cement lined	140	140	140
Cast-Iron, bituminous lined	140	140	140
Cast-Iron, sea-coated	120	120	120
Cast-Iron, wrought plain	100	100	100
Cement lining	130	140	135
Concrete	100	140	120
Concrete lined, steel forms	140	140	140
Concrete lined, wooden forms	120	120	120
Concrete, old	100	110	105
Copper	130	140	135
Corrugated Metal	60	60	60
Ductile Iron Pipe (DIP)	140	140	140
Ductile Iron, cement lined	120	120	120
Fiber	140	140	140
Fiber Glass Pipe - FRP	150	150	150
Galvanized iron	120	120	120
Glass	130	130	130
Lead	130	140	135
Metal Pipes - Very to extremely smooth	130	140	135
Plastic	130	150	140
Polyethylene, PE, PEH	140	140	140
Polyvinyl chloride, PVC, CPVC	150	150	150
Smooth Pipes	140	140	140
Steel new unlined	140	150	145
Steel, corrugated	60	60	60
Steel, interior riveted, no projecting rivets	110	110	110
Steel, projecting girth and horizontal rivets	100	100	100
Steel, vitrified, spiral-riveted	90	110	100
Steel, welded and seamless	100	100	100
Tin	130	130	130
Vitrified Clay	110	110	110
Wrought iron, plain	100	100	100
Wooden or Masonry Pipe - Smooth	120	120	120
Wood Stave	110	120	115

Data extracted from: https://www.engineeringtoolbox.com/hazen-williams-coefficients-d_798.html. (Last seen at 08/28/2023)