Slab on Grade
Slab-on-grade technical guide
...heater, air exchanger, water softener, septic pump, sulphur tank, central vac, etc.
Slab-on-grade design:
Given that you are committing a certain area of the main floor to mechanical systems, this is as good a time as any to plan some storage, and maximize the efficiency of that room. Along with some space for st...