How thick is your floor?

[Rubensgt40]

I've noticed this brought up on other threads- how can you be sure you're adhering to the letter of F2170 without knowing the exact slab depth?

I suppose if it went to a claims court you'd argue that the builder's specs were the only credible source.

And... if you drilled a depth test hole, wouldn't that puncture the under-slab retarder?

That StructureScan toy might not be such a bad idea. How expensive can they be?

[CC Solutions]

Yes I puncture the vapor retarder when I drill through, then I fill the holes with epoxy. It's the only sure-fire way of determining depth I know of.

[Ernesto]

(04-10-2012 07:29 PM)CC Solutions Wrote:  Yes I puncture the vapor retarder when I drill through, then I fill the holes with epoxy. It's the only sure-fire way of determining depth I know of.

You mean besides the scanner.

[CC Solutions]

You have a scanner that can tell me the depth of concrete on a compacted stone base to within 1/2"?

[Ernesto]

Just because you fill the puncture with epoxy; does that unequivocally insure the puncture is sealed? I hardly think so.

[CC Solutions]

(04-10-2012 08:41 PM)Ernesto Wrote:  Just because you fill the puncture with epoxy; does that unequivocally insure the puncture is sealed? I hardly think so.

Yes that insures the puncture is sealed. This is how we seal cracks, holes and repairs. That epoxy is many times stronger than the concrete, and many times more waterproof.

[Ernesto]

So, your going to drill a test hole at every test site to insure your within 1/2 inch huh?

[CC Solutions]

Not at all. At least not with slab on grade concrete. The testing protocol laid out in 2170 does a good job of exposing abnormalities, and any noted discrepancies can be further investigated by drilling confirming test holes for depth. So what I'm saying is if we install probes near exterior walls, near entrances and sprinkled throughout after that, and we know what the designed depth of the slab should be, a couple of proofing holes is all that would be required for a standard test. If probe readings start coming in all over the charts or if an installer wants to push the limits of a test, we may do more proofing.

Slabs in pans need to either use a floor scan tool or be drilled for depth to locate the flutes.