A pipe broke on the roof of a public building here in Chicago. Although I am an electrical engineer and very rusty on hydraulics and water flow, I have been asked to estimate the amount of water dumped on the roof of this building, as follows:(adsbygoogle = window.adsbygoogle || []).push({});

Diameter of the burst pipe: 3/4 in.

Water temperature: 130 degr F

Pressure: 15 lbs

Water flowed for 45 minutes before being shut off. I assume the break allowed water to flow freely from a 3/4 in diameter opening.

I would appreciate it if someone can send me the formula for this calculation. I have searched a number of PF postings, without luck.

Thanks,

berniebs

berniebs@comcast.net

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# Volume of water flow

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