Structural Mat Slab
1) The structural mat slab has a broomed finish which functions as a walk off space for dirt from shoes and an anti-slip finish.
2) The structural mat slab has a 3 inch fall toward the garage doors to drain the garage to the outside.
3) Exhaust side of the earth tube system exits the Garage on the center of the north wall (Rectangular Stainless Steel Duct).
a. Exhaust cfm is controlled by a wind ventilator connected to the exterior exhaust earth tube (white PVC located 15 feet from the building).
b. The exhaust side of the earth tube system is connected to a DC Fan which is controlled by a CO2/moisture sensor