The roof assembly features a six-foot by four-foot dished sump sloping one inch toward the primary and secondary drains. A one-inch lip surrounds the primary drain basin. Grid lines locate the sump layout relative to the structural grid.
3"-6" DISH SLOPE 1" TO DRAIN 1" LIP PRIMARY DRAIN SECONDARY DRAIN 3' - 0" 4 A5.16 6' - 0" 4' - 0" GRID GRID 1' - 6"
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