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Re: ACI 318-05 Appendix D

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oh, i see there are two shear directions as well as a compression (or tension) component.
 i think you can use the one shear direction and the C (or T) forces.  ea direction for shear has its own designated edge and anchor spacings.  very good

On 11/28/06, Padmanabhan Rajendran <rakamaka(--nospam--at)> wrote:

I will use the criteria detailed in D.7, with a modification of equation D-31 to include the terms corresponding to the shear in a perpendicular direction. In other words, resolve the shear force in the "parallel" (Vu1) and "perpendicular" (Vu2) directions, calculate (phi)(Vn) for the two directions and, check if (Nus/(phi)(Nn) + (Vus1)/(phi)(Vn1) + (Vus2)/(phi)(Vn2)) < 1.2.


Eric Tompos < etompos(--nospam--at)> wrote:
ACI 318-05 Appendix D addresses the design of anchors for shear loads directed either parallel or perpendicular to a free edge.  Does it address the design of an anchor where the resultant shear load is at an angle to a free edge?  More specifically, the parallel breakout strength is 2x the perpendicular strength (ACI 318 RD.6.2.1), what is the strength for resultant loads directed at an angle to the free edge?
Eric Tompos, P.E.
NTA, Inc.

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