FIG. 1: Isometric view. FIG. 2: Top view; bottom view being a mirror image. FIG. 3: Horizontal cross-section. FIG. 4: Corner Detail; typical of six corners. FIG. 5: Corner plan section; typical of three corners. FIG. 6: Elevation looking towards corner; typical of three corners; and, FIG. 7: Elevation looking towards side; typical of three sides.