Greenhouse Slab Vapor Barrier?

[SteelPE]

I am currently designing a foundation for a greenhouse (110,000 square feet). Code is IBC2015.

We typically call out 10mil vapor barriers under all of our slabs.... would you still call out a vapor barrier under a greenhouse slab? Though process is, there will be adding so much water for that plants that it won't really matter if a little extra vapor comes from under the slab.

 

[dik]

I think the answer has been presented... no PEVB if no finishes and no intended future use.

Dik

 

[r13]

Couple points to consider:

1) Flooring. I know some greenhouses have tile, or even wood flooring in some areas.
2) Floor finish. Smooth finish will cause fall hazard, if gets wet.
3) Frost concern/protection.