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RE: Slab on Grade and the Green Code

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Andrew - you couldn't send attachments to the old List Server and I think 
the same applies to this version.

D. Matthew Stuart, P.E., S.E., F.ASCE, F.SEI, SECB, MgtEng
Structural Division Manager
Pennoni Associates Inc.
Office 215-222-3000 x7895
Mobile 908-309-8657 | mstuart(--nospam--at)

-----Original Message-----
From: seaint-seaosc(--nospam--at) [mailto:seaint-seaosc(--nospam--at)] On 
Behalf Of Drew Morris Sent: Thursday, December 05, 2013 1:18 PM
To: seaint-seaosc(--nospam--at)
Subject: Re: [SEAINT-SEAOSC] Slab on Grade and the Green Code

Andreww, did you attach that article you mentioned?

On 12/5/2013 8:38 AM, Andrew Kester wrote:
> I am curious as to where you fall in this discussion with your vast
> experience Mr. Stuart?
> I have read articles that have lead me to believe this is a regional
> practice thing, and perhaps somewhat related to differing climates and
> water table levels?  In essence, the vapor barrier/sand/concrete
> design is a west coast or California detail, while much of the east
> coast is normally slab directly on a vapor barrier? FWIW, in Florida
> the SOG is almost always placed directly on a vapor barrier. But many
> areas of Florida have high water table which can lead to high natural
> moisture content in the near surface soils, as well as dealing with
> very rainy summers and high humidity during construction.
> Also, vapor barriers have come a LONG way. If using a vapor barrier
> directly under the slab, I would strongly recommending on going much
> thicker than 6mil to avoid a lot of the tearing and puncture issues.

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