What Does Burst Strength Mean?
Burst strength is the amount of internal pressure a pipe can withstand before the pipe fails or bursts. The integrity of a pipe can be affected by internal and external factors. Depending on the material of the pipe and the fluid it carries, the burst strength will vary.
Trenchless rehabilitation methods such as sliplining, thermoformed pipe and pipe bursting can be used to rectify or replace burst pipes without the need to excavate.
Trenchlesspedia Explains Burst Strength
The burst strength of a pipe should be a prime consideration when deciding which kind of fluid will be pumped through it. The burst pressure a pipe can withstand decreases with the increase in pipe diameter. Once the pressure inside the pipe reaches a critical point, known as the yield strength, the pipe will most likely fail by deformation.
Burst pressure is the function of the strength of the material, the thickness of the pipe wall, outer diameter (OD) and inner diameter (ID). Temperature and corrosion also play a role in the burst strength of a pipe material.
Barlows equation is generally used to calculate the internal pressure and is given as P = (2*WT*S) / OD, where P is the burst pressure; WT is the wall thickness; S is the tensile or yield strength.