Hi.

Did not pay enough attention when a 10,000 sq.ft. freezer was added at a facility I worked at many years ago.

...Remember a reinforced concrete slab poured on the ground, then a ~8" layer of styrofoam, and another reinforced concrete slab on top.

 

Forklifts danced all over that floor with no problem. Am I missing details?; what is the building technique to avoid cracking/collapse with such styrofoam sandwich ?

How is it done properly int the civil engineering world ?

After some googling for the translation of french "chape flottante" I found "floating screed"

 

usually the concrete floor floating upon the styrofoam is reinforced (as you said) so that the loads are distributed over a large surface.

 

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Cracking/collapsing may happen near the expansion joints. Otherwise styrofoam works well. Moving loads are not that much.

Edited January 25, 201312 yr by michel123456

Thanks, Michel.

Your correct wording made a world of difference ! Great help !