Rusty Bolts
Rusty Bolts
(OP)
I have a project where some of the bolts and nuts in beam-to-column shear connections and moment connections have a lot of rust on them. The steel has primer on it and it looks ok. This project has been under construction for about a year. Is there any information available regarding the effect of rust on bolts or how much rust should be allowed/expected?
Thanks.
Thanks.






RE: Rusty Bolts
Check with AISC perhaps? www.steel.org
RE: Rusty Bolts
RE: Rusty Bolts
RE: Rusty Bolts
RE: Rusty Bolts
RE: Rusty Bolts
RE: Rusty Bolts
RE: Rusty Bolts
RE: Rusty Bolts
RE: Rusty Bolts
Me neither
RE: Rusty Bolts
I've seen fasteners that were under shelter for hundreds of years that looked better.
That one's been out in the rain. A lot.
I think I see pitting in the nut faces. ... which would be of no concern, except that I'd then expect pitting, or worse, of the bolt threads near/below the nut's faying surface.
I'm guessing that if you attempt to remove a few nuts for inspection of the bolts, some of the bolts will snap off at a much lower torque than you'd expect. Because of the rust, removing them turns both parts into scrap regardless, so you'll have to buy a few new ones anyway.
I hope I'm wrong.
Mike Halloran
Pembroke Pines, FL, USA