How to Calculate the Wall Thickness of a Pipe

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Pipes are divided into different categories based on both length and the thickness of their walls. A pipe's wall thickness is especially important to know during construction projects, as a pipe with too thin a wall may burst under pressure.

Pipe walls vary quite a bit in terms of thickness.

The formula used for calculating the thickness of a pipe's wall is fairly simple, as is the method for figuring out the pipe's wall measurements.

  • Place your ruler or measuring tape over the mouth of the pipe.

  • Measure the diameter of the pipe from the top of the outer wall to the bottom of the outer wall. Note this down on a piece of paper.

  • Measure the diameter from the top inner wall to the bottom inner wall. Note this number down on a piece of paper as well.

  • Plug the two numbers into the following formula:

  • (Diameter of Outer Wall - Diameter of Inner Wall)/2. The resulting number is the thickness of the pipe wall.

    • The Drip Cap

    • Pipes are divided into different categories based on both length and the thickness of their walls.
    • A pipe's wall thickness is especially important to know during construction projects, as a pipe with too thin a wall may burst under pressure.
    • Measure the diameter from the top inner wall to the bottom inner wall.

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