quantification of riser expansion

Tim Gardner · November 2003

How much does a riser of 1 1/4 black pipe expand? For example, is it 1/4" per 100"? More? Less?

Thanks,
Tim

Jerry Boulanger_2 · November 2003

The coefficient of expansion

for steel is 0.0000065" per inch per degree F. So, if a pipe is heated from 50 to 200 F, it will expand (150 x 0.0000065"), or 0.000975" for every inch of its length. If it is 100'(1200") long, that would equal a total expansion of 1.17". The diameter of the pipe has no bearing on this.

ScottMP · November 2003

Jerry

I hav'nt seen those enumbers since I took my Mass Plumbing exam.

Can you imagine trying to memories about five of those zzzzzzzz. Sure cure for insomnia

Scott

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Tim Gardner · November 2003

Thanks!

This is EXACTLY the information I wanted.

Many thanks,
Tim

quantification of riser expansion

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