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Concrete pull out check
2

Concrete pull out check

Concrete pull out check

(OP)
Very silly question but I haven't done a concrete pull out check for a set of anchor bolts (in a pier) in a long time. What ACI section should I be using?

RE: Concrete pull out check

Appendix D, and welcome to the nightmare. I'd skip it and develop your anchor rods via a splice or some other means of anchorage unless you have very low uplift.

RE: Concrete pull out check

Appendix D.
Good luck with that.

RE: Concrete pull out check

I through-bolt whenever I can to avoid Appendix D entirely.

RE: Concrete pull out check

Appendix D and then a sanity check!!
However, HILTI and some other anchor bolt companies have free downloadable programs that will jump eagerly thru all the hoops req'd.
The computer never complains.

RE: Concrete pull out check

Wow it's not that bad.

ACI-318-05/08 App. D is the section you are looking for, 08 has better pictures and explanations.
 

RE: Concrete pull out check

(OP)
@a2mfk, when you say develop the AB via a splice, is there a special type of anchor rod I would need for that? I am having a difficult time picturing this.

RE: Concrete pull out check

He is referring to ACI 318-08 Section D.4.2.1, which allows you to design reinforcement to restrain concrete breakout, Section D.5.2.9 describes the design of the reinforcement along with how far the reinforcement can be from the anchor bolts.

Here are two article for some guidance

http://www.structuremag.org/OldArchives/2004/july/From%20Experience.pdf

http://www.bechtel.com/assets/files/TechPapers/design-of-anchor-reinforcement.pdf
 

RE: Concrete pull out check

(OP)
Sandman, thank you.

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