Length of Restrained Pipe Calculation
Length of Restrained Pipe Calculation
(OP)
I am working with an agency that uses restrained joints in lieu of thrust blocks. The provide minumum lengths, but I would like to see how to calculate these lengths. Does anyone have a link where this calculation is explained? I am working with PVC pipe if it makes a difference.





RE: Length of Restrained Pipe Calculation
EBAA has a program that uses the parameters to calculate the lenght required, free download or web based at www.ebaa.com
Hydrae
RE: Length of Restrained Pipe Calculation
Try www.DIPRA.com and dowload their free program. I would recommend it over EBAA.
RE: Length of Restrained Pipe Calculation
Agencies tend not to use restrained joints in lieu of thrust blocks because 1) any other agency opening a trench along the same alignment will remove the restraint 2) any future repairs to the restrained length of pipe must restore the restraint.
RE: Length of Restrained Pipe Calculation
We consider it a more reliable system of thrust restraint because when another agency digs up in an area of restrained joints a large area is required to compromise the system, where digging behind that lump of concrete can cause a dramatic failure with just one small hole.
Hydrae
RE: Length of Restrained Pipe Calculation