Cyclic Life Calculator

This calculator was developed based on recent research performed by Utah State University. The user is encouraged to reference the PVC Force Main Design Guide for more information on cyclic design of PVC pipe. Users are able to determine cyclic life of PVC pressure pipe from recurring surge pressure events. Designers are responsible for the proper use of this program for all projects. For an in-depth guide on using this calculator, reference the How-To Guide.

The formula used to calculate cyclic life is as follows:

Where :

N = Number of cycles (surge occurrences) to failure

n = Cycles (surge occurrences) per year

σamp = Stress amplitude in pipe from cyclic pressures

Recurring Surge Event

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Enter value greater than or equal to 0
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Enter value greater than or equal to 0
(only two decimal point is allowed)
Looks good!
Enter value greater than or equal to 0
(only two decimal point is allowed)