Davebones
Senior Member
- Location
- North Of Tampa Fl
Can you drill metal I-beams ,bar joist's in a manufacturing plant to hang box's ,strap's etc .... Is there a code on this ?
Drilling I-Beams and bar joists ?
- Thread starter Davebones
- Start date
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There is no NEC code on it, I see it done often.
Davebones
Senior Member
- Location
- North Of Tampa Fl
I hear people say it will weaken the structure .All the time I've been in the trade we were allowed unless it had a fireproofing sprayed on it . Our carpenter at work is questioning this . I wanted to see what other people had to say ...
carpenter? Are you talking about drilling engineered I joists (wood), or steel I beams?
RETRAINDAILY
Senior Member
- Location
- PHX, arizona
We do it all the time and thread our rod with the 300, when they speck no beam clamps, all thread or unistrut.
We use tex5 screws when we can.
We use tex5 screws when we can.
cadpoint
Senior Member
- Location
- Durham, NC
Attention to the OP might help.. don't know... I've drilled (seems like a lot of work) beam clamped and stuck threaded rod between the joists, Tech5, shot a cap. Seems more like what the job spec's will let you do, as opposed to what one would like to do.
jmargolis79
Member
- Location
- minneapolis
we use a stud gun to weld a internal threaded stud to a beam. You can then mount a box or attach all thread.
oops, thanks. 'carpenter' threw me off.
cadpoint
Senior Member
- Location
- Durham, NC
It's just work Brother/Sister, God Knows we love it!
RETRAINDAILY
Senior Member
- Location
- PHX, arizona
We do that for thicker I-beams and stainless
Jim W in Tampa
Senior Member
- Location
- Tampa Florida
Not likely to weaken anything but if the AHJ tags it you have major problems with the repair. I would ask the inspector first
SG-1
Senior Member
- Location
- Ware Shoals, South Carolina
Our facility has columns & you cannot wield or drill them. Only clamps are allowed. Wielding will make them brittle & drilling holes weakens them, or so say the wise. We also have four 15 ton crains rolling across the top of ours.
In the past I have seen everything including EMT wielded to them.
Not any more.
In the past I have seen everything including EMT wielded to them.
Not any more.
Welding brackets and other types of support to structural steel use to be a standard practice in all of the high-end industrial jobs I've worked (power plants, steel mills & foundaries, refineries, etc.), but many have gotten away from that practice nowadays, requiring clamps and other "non-invasive" attachment methods. There doesn't seem to be much in the way of factual events backing up the change. I believe it is more of a myth created by structural engineers
i agree, it is always best to get the design prof. involved, that signed & sealed letter takes you off the hook
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