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Depth can be drilled for an Epoxy Anchor Bolt?

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SKJ25POL

SKJ25POL

Structural
Mar 4, 2011
358

I am not expereinced in post-installed Anchor bolts.
It is determined to use 33", 48", 54" for embedment depth for Epoxy anchors. Is it feasable to drill to these depth with no problem?
Are these embedment depth too deep to be able to drill and use Epoxy Anchor Bolts? Any possible problems with deep embedments?
Project location: U.S.
Required Epoxy Anchor Bolt: Hilti HIT-RE 500 + HAS - R 304/316, 1 1/4

I appreciate your directions.

Have a good day
 
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Contact your local Hilti rep. I just had one out for a lunch and learn and they mentioned doing 55" on occasion. Obviously, edge distances and potential for spalling are issues. They also have some new software for designing these connections.

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.
 
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I would be worried about getting them cleaned out properly and getting the epoxy in there properly.
I installed some 7/8"ø x 12" bolts for my solar panels. Even they were tough.
 
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One version of the RE500 kit comes with a self cleaning bit. I'd definitely go with that for the deep embedments. At 53", I'd be tempted to see if I could persuade Hilti to just do it themselves. Or execute a testing program.

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.
 
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Hilti HIT-RE 500 ICC report shows the max permitted embed. 20db for a 1.25" bar that would be 25". This limited by ACI 318-11 D4.2.3. Depending on the application you could extend the embed. See this for more information Post Installed Reinforcing Supplement
 
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