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Question on Cable duct into concrete basement wall in SDC D[Subject Prev][Subject Next][Thread Prev][Thread Next]
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- Subject: Question on Cable duct into concrete basement wall in SDC D
- From: "Vasu, Ravi" <Ravi.Vasu(--nospam--at)jacobs.com>
- Date: Mon, 26 Sep 2011 09:10:13 -0500
Title: Question on Cable duct into concrete basement wall in SDC D
I have a situation where a cable duct is joining a building basement wall at 5 ft below grade. The cable duct's contractor has designed
the concrete duct with some rebar around the a bunch of cables & the duct goes through a Structural concrete wall into a building.
Our building is resting on soil at 7 ft below grade.
We designed the basement wall per SDC D(our project is located) and left an opening for the duct(say, 4 X 2 ft).
I am concerned with lateral relative movements of wall versus the duct in the seismic zone. My question is, do we need to provide
horizontal rebars above the top cables & below the bottom most cables connecting our basement wall, making it as one system?
The cables are so close & no rebars can be placed in between them.
Otherwise we can provide water stop between the wall & duct & use sealant on the outside joint(making them separate). I am not sure whether IBC/ASCE covers this
case. There might be a 'standard' way of doing this. Can you pl. give your suggestions?
Thanks for your suggestions.
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