Passive solar home design
how to build a slab-on-grade on standard soil
...water pipes, drains, radon stack, central vac, power conduits, etc.) was put in place next, below the coming insulation and concrete. We used insulated water pipes courtesy of Uponor for greater energy efficiency.
Plumbing infrastructure © Ecohome
You need to be very sure about the placement of plumbing at this...