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The other day there was a good discussion on pipe that can run within the open-webbing of steel joists.
Is there a good rule of thumb or any references to determine how long a pipe can be to fit within the joists? I'm wondering if there's some tool or resource that says for 16" joists that has 2" web spaced at 4 feet, I can use only a 10.5 foot pipe length. It may not exist, just curious if it does already in some fashion. Posted anonymously for discussion. Discuss This | Submit a Question | Subscribe
5 Comments
Wayne Ammons
4/26/2019 06:45:54 am
There is an old formula and diagram for this. I could not find a website that showed it and am not sure the best way to get it to you, so I have copied an excel file to Dropbox that has the formula and diagram:
steve bahr
4/26/2019 10:24:49 am
I will look around. I have charts that show all of this. Somewhere...
Logan Nootbaar
7/20/2021 10:52:13 am
Can you please define all variables?
James Phifer
4/26/2019 10:36:10 am
I have used a formula in the past that was created by Ed Miller from AFSA back in 1992. It's a bit conservative but at least I know the pipe will fit.
Bobby V
5/8/2019 04:52:53 am
When I was designing, the rule of thumb was to use 10’-6” pipe lengths for exposed construction installations. For a new system installation in an existing building with hard ceilings (or lay-in), I would use 6’-0” pipe lengths. However, always consult with your installing foreman, they are the experts. Leave a Reply. |
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