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RE: rebar vs anchor

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Good morning Steve

 

I don’t see how an embed plate on top of concrete would get you out of App. D. The current exception is for “multiple anchors connected to a single steel plate at the embedded end of the anchors” which doesn’t quite jibe with what you’re describing (if I am understanding this correctly).

 

Ben Yousefi, SE

Los Angeles, CA

 


From: Steve Gordin [mailto:sgordin(--nospam--at)sgeconsulting.com]
Sent: Saturday, September 17, 2011 9:37 AM
To: seaint(--nospam--at)seaint.org
Subject: rebar vs anchor

 

Good morning,

 

Anchoring a piece of heavy equipment with high seismic pullout. 

 

I can use anchors through the baseplate, and use ACI318 Appendix D.  

 

I can also weld the baseplate to embedded plate with welded-on hooked rebars.  This case does not appear to be governed by Appendix D, and the results (embedment depths etc.) are quite different.

 

Your thoughts on this subject will be highly appreciated.

 

V. Steve Gordin SE

SGE Consulting Structural Engineers
www.sgeconsulting.com