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RE: IBC Section 1908.1.16 is a bugger

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I haven't gotten any "post installed" anchors in concrete to work using the 2.5 increase per CBC 1908.1.16, so I am falling back on the definition of "Ductile Steel Element" from page 379 of the ACI which states that ASTM A307 "shall be considered ductile." The way I read ACI Sec. D.3.3.4, the A307 threaded rod, (for epoxy applications), or anchor bolt would meet the criteria of this section, (I hope).
Larry Hauer S.E.

From: t.w.allen(--nospam--at)
To: seaint(--nospam--at)
Subject: IBC Section 1908.1.16 is a bugger
Date: Fri, 30 Jan 2009 10:26:36 -0800

Now that new construction is slowing down, I wonder how big of a role this will play in the remodel world.


Does anyone know the source of the 2.5 factor mentioned in the modification to ACI 318 Appendix D.3.3.5? It seems rather arbitrary to me. But, what do I know?



T. William (Bill) Allen, S.E.


Consulting Structural Engineers
V (949) 248-8588 F(949) 209-2509


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