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RE: conduits in footings - thoughts?

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I am also thinking about your opinions for detailing this. Do you cast the conduit directly in the concrete? Do you provide a sleeve opening, then put the conduit through, then fill the void with some sort of flexible caulk? Would you want this rigidly cast in the concrete so that if there is any movement in the concrete, it is transferred to the conduit and the conduit could break?


From: "David Topete" <dtopete(--nospam--at)gfdseng.com>
Reply-To: <seaint(--nospam--at)seaint.org>
To: <seaint(--nospam--at)seaint.org>
Subject: RE: conduits in footings - thoughts?
Date: Tue, 10 Apr 2007 13:07:23 -0700

Absolutely.  We normally have details for conduit through footings with
add'l reinforcing.  If pipe penetrations are an absolute no-no, then we
typically note on the drawings as such...

David A. Topete, SE

-----Original Message-----
From: Daryl Richardson [mailto:h.d.richardson(--nospam--at)shaw.ca]
Sent: Tuesday, April 10, 2007 12:58 PM
To: seaint(--nospam--at)seaint.org
Subject: Re: conduits in footings - thoughts?

David

I don't think I would want to rely on anyone on the jobsite but you
to know the difference between zones of minimal stress and zones of very
high stress.  Other than that the worst problem I can foresee (not working
with high seismic, of course) is that it might be necessary to provide a
detail for reinforcement around a sleeved opening.

If we are talking about a large duct in a column footing, of course,

it would be necessary to design the footing to accommodate the opening.

Regards,

H. Daryl Richardson

----- Original Message -----
From: "David Topete" <dtopete(--nospam--at)gfdseng.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Tuesday, April 10, 2007 1:05 PM
Subject: RE: conduits in footings - thoughts?


> Usually, these are smaller conduits.  Ideally, they are typically placed
> in
> zones of minimal stresses.  It's good practice to specify additional
> reinf'g, to minimize cracking. If this a standard footing, then, yeah, go > ahead. If it's gonna be a larger footing for a shearwall, then I'd direct
> the electrical and general to conspire to damage another part of the
> structure...  Just my thoughts...
>
> David A. Topete, SE
>
>
> -----Original Message-----
> From: gina gobo [mailto:engineer98225(--nospam--at)hotmail.com]
> Sent: Tuesday, April 10, 2007 11:48 AM
> To: seaint(--nospam--at)seaint.org
> Subject: conduits in footings - thoughts?
>
> This question has come up time and time again and I am not sure how to
> address it.
>
> I would like to get your thoughts regarding locating electrical conduits
> in
> footing stem walls or in the footing itself.
>
> Contractors end up doing this a lot, your thoughts?
>
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