"J" anchor bolt vs headed anchor
"J" anchor bolt vs headed anchor
(OP)
Any link when to use either. I almost always use headed anchor. Also any link regarding "J" bolt embedment calculation.
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"J" anchor bolt vs headed anchor
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"J" anchor bolt vs headed anchor"J" anchor bolt vs headed anchor(OP)
Any link when to use either. I almost always use headed anchor. Also any link regarding "J" bolt embedment calculation.
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RE: "J" anchor bolt vs headed anchor
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: "J" anchor bolt vs headed anchor
Question though, do we even have calculation for headed and L bolt capacity against rotation if they loosen the nut in the future?
RE: "J" anchor bolt vs headed anchor
Not that I know of. It's not an issue that I've considered. Frankly, I'd be surprised if straight steel rod would even rotate. You get some bond on the shaft. When we drill and epoxy straight hilti bolts into concrete, we don't normally hear of issues with bolt rotation. At least, not with properly installed Hilti bolts.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: "J" anchor bolt vs headed anchor
RE: "J" anchor bolt vs headed anchor
RE: "J" anchor bolt vs headed anchor
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: "J" anchor bolt vs headed anchor
Dave
Thaidavid
RE: "J" anchor bolt vs headed anchor
RE: "J" anchor bolt vs headed anchor
RE: "J" anchor bolt vs headed anchor
RE: "J" anchor bolt vs headed anchor
This is what Miller just told me the other day in a webinar.
RE: "J" anchor bolt vs headed anchor
RE: "J" anchor bolt vs headed anchor
The mechanical deformation results in the rod spinning some but can only spin up so far before engaging the deformed threads, at least that's how it works in my head...
Edit: [Just so my horrible sense of sarcasm is not misconstrued as being a jerk or cocky, i meant the "!" as a joke (a bad case of type sarcasm), i actually do hold your opinion pretty high based on my readings of your past posts]
RE: "J" anchor bolt vs headed anchor
The whole anchor bolt is in tension at its point of fixity, so there is no "tension side". I would agree with Miller if you were only using a nut on the end of a threaded rod, but most times there is a plate washer above the nut. The nut itself will turn because of localized crushing of the concrete at the points on the hex head. The plate washer is not threaded and is free to turn on the bolt. If you tack weld the plate to the bolt, the bolt can no longer turn relative to the plate and the plate is large enough that it will not locally crush the concrete and spin.
If you come across the AISC reference you noted, post it. I'd like to look at that.
RE: "J" anchor bolt vs headed anchor
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: "J" anchor bolt vs headed anchor
RE: "J" anchor bolt vs headed anchor
See attached sketch for illustration.....
RE: "J" anchor bolt vs headed anchor
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: "J" anchor bolt vs headed anchor
RE: "J" anchor bolt vs headed anchor