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Re: Tilt Up Panels

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I use L/45, for estimation, The opening will affect alot
The refrence u can use is, ACI 551R-92

Faris Daoud P.E.

-----Original Message-----
From: Michael Zaitz <zmanpe(--nospam--at)>
To: seaint(--nospam--at) <seaint(--nospam--at)>
Date: Friday, June 02, 2000 8:31 PM
Subject: Tilt Up Panels

>Is there any rules of thumb for estimating the thickness of a concrete
>panel?  I have a 31 feet eave height with some dock doors giving a total
>height of 36 feet.  Will a 7.25 in panel work or do I need to warn the
>contractor now that it is not feasible.   The project is in Seismic Zone 2
>and wind speed of 80 mph.
>Also,  are there any problems or concerns in the design of the concrete
>panels?  I am planning on using the panels as shear walls which does not
>concern me except in 1 spot where I have 45k at the top of the wall and
>2-20 ft lengths to resist it.  Are there any other forces I need to worry
>about for the design?  Thermal (panels are uninsulated and the interior is
>climate controlled), etc?
>Finally, are there any good references for tilt up?
>Mike Zaitz