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walkereng
walkereng, Consultant
Category: Structural Engineering
Satisfied Customers: 2641
Experience:  Over 30 years of Structural Engineering experience.
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What pattern of drilling holes /4 PEX pipe should I use

Customer Question

What pattern of drilling holes for 3/4 PEX pipe should I use for drilling through 8 " floor joists, in a basement and 1st floor re-plumbing operatwion, when I am running water lines through the joists, to get from one end of house to the other. I have read elsewhere not to drill any holes in the bottom 1/2 of joists. Could I alternate drill holes at 2" and 4" from top of joist, on an 8" joist, offsetting the holes so they do not line up, one directly above the other. (SAy, offset by 2-3 ")
Submitted: 1 year ago.
Category: Structural Engineering
Expert:  walkereng replied 1 year ago.

Let me take a look at your question when I get into my office this morning.

Expert:  walkereng replied 1 year ago.

Sorry for the delay.

Here is a great guide that shows the limits of boring holes in joists

Expert:  walkereng replied 1 year ago.

Take a look and let me know if you have any questions.

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