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Re: Capillary Breaks[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Re: Capillary Breaks
- From: GSKWY(--nospam--at)aol.com
- Date: Wed, 9 Feb 2005 17:03:41 EST
In a message dated 2/9/2005 4:29:51 PM Eastern Standard Time, rgarner(--nospam--at)moffattnichol.com writes:
I guess my comment on this is still - are you talking about a capillary break material or are you talking about a granular material? These are not the same thing.
The ACI 302/360 recommendation is that if you have anything on top of the vapor retarder, it should be compactible and trimmable. The 'trimmable" bit is kind of useless, since as far as I know there are no measures of "trimmability", but compactible means that you have to have particles of different sizes - i.e. not capillary break material.
This is way big litigation material. Not to be too specific, but you start by looking up all the definitions you find for things like "capillary break" in any ASTM standard. And you start looking at the ASTM specification for vapor retarders. Which essentially copied the above chunk out of ACI 302 (trimmability and all.)
Also, putting a granular material on top of the vapor retarder just for protection is generally not recommended - if you do puncture the vapor retarder, it's hidden. Doesn't mean it isn't done, but you might not find any well respected documents recommending it.
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