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RE: Slab-on-grade sloped for sprinkler drainage under access floor

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Scott,
I would consider making the elevated floor flat.  Adjust the pedistals as required and go ahead and slope the slab on grade. 

Regards,
Harold Sprague

> Subject: Slab-on-grade sloped for sprinkler drainage under access floor
> Date: Thu, 17 Apr 2008 15:45:15 -0800
> From: Scott.M.Haan(--nospam--at)usace.army.mil
> To: seaint(--nospam--at)seaint.org
>
> I'm designing an office building with an access floor. They are sprinklering
> under the access floor. The mechanical engineer is telling me that I need to
> slope the slab-on-grade to sump pits.
>
> What is the maximum you can slope a slab supporting access floor? I thought
> I heard .5" maximum change over the whole thing.
>
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