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Re: Slab on Grade and the Green Code

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It's good to see that there are actually some people still POSTING oin the list server!!



On 05/12/2013 2:35 PM, Chuck Utzman wrote:
I just got back from a job site. I took a look at some 6 mil visquene that was removed during some demo work. It looked like one of grandma's lace curtains. The sand hides the punctures, but can't prevent them in a crummy 6 mil vapor barrier. Also, the workers walk around on the rebar & embed the dobbies & rebar into the sand. If the concrete is pumped it can move the sand into contact with the rebar. The ASTM piece goes into this at length & it's partially discussed in some of the articles in this thread.
Chuck Utzman,PE
ps It's nice to see that there are still some of us still watching the list server

On 12/5/2013 8:56 AM, Lloyd Pack wrote:
Hello Oshin & Board:

Have you been able to get any information on why the GBC wants
no sand over the vapor barrier?  How do the writers of the GBC
expect the concrete to be installed without puncturing the typical
plastic sheet, 0.006" thick, that is used as a vapor barrier?

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