HDPE Pipe Flow Calculator

Deteriorated

Fully

Partially

Flexural Modulus

Flexural Strength

psi

Mean Pipe Diameter

inch

Mean pipe diameter is required.

Ovality (0 - 10%)

Acceptable inputs are 0 - 10%

Ovality (0 - 10%) is required.

Maximum External Water Head to Invert

Maximum external water head to invert is required.

Flexural Modulus Retention to Account for Long-Term Effects

Safety Factor For Exter Loads

Soil Depth At Top Of Conduit

Soil depth at top of conduit is required.

Soil Density

Live Load

No Live Load

Under Highway

Under Railroad

Default Soil Modulus

700psi - Depth from 3' to 10'

1000psi - Depth from 10' to 15' or under Highway

1500psi - Depth > 15' or under Railroad