Section A106.2—Component description.
A106.2 Component description. All on-grade slab floors are assumed to be 6 inch concrete poured directly onto the earth. The bottom of the slab is assumed to be at grade line. Monolithic and floating slabs are not differentiated.
Soil is assumed to have a conductivity of 0.75 Btu/h • ft2 • °F. Slabs 2 feet or more below grade should use basement coefficients.