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RE: Design of Anchorage to Concrete

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Because the "pullout cone" is going to be intercepted by that edge, and thus the anchorage capacity will be less the closer you are to an edge.
-----Original Message-----
From: VerneK(--nospam--at) [mailto:VerneK(--nospam--at)]
Sent: Friday, October 25, 2002 11:57 AM
To: seaint(--nospam--at)
Subject: Design of Anchorage to Concrete

In section 1923.3 (design of shear), it states that the edge distance shall in no case be less than 4 diameters. In my case, I am using 7/8" diameter bolts which amounts to an edge distance of 3.5".
Why is it so critical to have such a large edge distance, especially for an unloaded edge?