The panels consist of 2x8 concrete studs, sheathed with a 1-inch layer of extruded polystyrene insulation board and covered with an exterior face shell of 2-inch concrete. At the top and bottom of the panels, the concrete studs and face shell are connected by concrete "wall plates" that serve as bond beams. The panels are factory-cast using a 5,000-psi fiber-reinforced concrete, and are available in standard heights of 4, 8, and 10 feet in lengths up to 12 feet. The concrete studs are reinforced with a 3/8-inch vertical bar on the interior (tension) side of the wall, and each bond beam is reinforced with two 3/8-inch bars.
A perimeter drain is placed a foot or so outside the foundation footprint, and 6 inches of 1/2-inch crushed stone is spread over the entire basement area and leveled.
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