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Aci Appendix D

Aci Appendix D

Aci Appendix D

(OP)
I have always used the punching shear calc to determine how much breakout strength concrete has when a Anchor Bolt is in tension...(4)(f'c^.5) ( projected area of a cone)

the 2002 Aci has appendix D there the breakout strength is alot less then that...for example a single cast in place bolt with a 12" embedment with full failure area is about 68 kips.....if punching were used it is good for about 99 kips...

Any comments?

RE: Aci Appendix D

Appendix D has changed design theories.  It now uses a pyamidal shape (instead of cone shaped) with a slope or 35 degrees.

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