thedirtman
Well-known member
My house is cast in place concrete. I use the Thermomass system. They are out of Iowa. 8" structural concrete, 2" of ridged foam, 4" exterior concrete for a 14" thick wall. Top plate was a 12x6 treated lumber anchorded into the top of the wall like you would a sill plate. My floor system is 4"x6" treated lumber attached to 3"x3" x3/8" angle iron that is attached to the concrete walls with Titan bolts. I have conventional wood trusses with standing seam metal roof. My windows are all thermally broke aluminum. Interior walls are bare concrete and the exterior is stained. 450 yards in the house with about 40 tons of rebar. I do have a 16' retaining wall that runs the back of my house that ate up a lot of concrete and rebar. solid 14" thick with double mats of #7 and #5 bars at 10" with a footing that is 8.5' wide and 18" thick with double mats or #5.