I am working on a small pool house/pavilion in Connecticut. The building will be largely open with a few walls to enclose a few spaces. The building will not be insulated or conditioned. We are going to pour a slab over frost protected foundation walls. The slab will be one giant flat surface that will serve as the floor of the enclosed spaces, the floor of the covered areas under the roof, and the patio around the pool. 

To avoid pouring stem walls or setting concrete block to get the bottom plate up off the slab, we are considering alternatives to connect the bottom of the 2×6 walls to the slab, while protecting them from water.

I’ve considered:
1) steel studs
2) pt bottom plate wrapped with waterproofing that would be folded a few inches up the sides and secured under the sheathing/trim
3) Azek/pvc plate that would run under all of the walls and slightly lift the pt plate off the slab

Does anybody have any experience with this and/or comments on the methods I’ve proposed above?

Thanks!