A subterranean vehicle elevator pit wall bears on a concrete footing, incorporating exterior waterproofing and subdrainage systems. A six-inch shotcrete wall aligns with a double layer of drainage mat and a waterproof membrane against the retained earth, terminating near a property line. Crystalline waterstops are positioned at all vertical and horizontal construction joints in the concrete. Four-inch PVC pipe weepholes penetrate the first layer of the drainage mat and are sealed to the inner layer to discharge water. Drain rock surrounds the six-inch mechanical drain tile and extends from the wall weepholes.
A F1.1 VE PIT 24.96' SEE STRUCT. 1' - 2" C1 PROPERTY LINE APPLY SURFACE WATERPROOFING TO INTERIOR OF VE PIT. TYPICAL TO ALL ELEVATOR/VEHICLE ELEVATOR PIT SLABS AND WALLS. 6" SHOTCRETE WALL, SEE GEOTECH DWGS DRAIN MAT CRYSTALLINE WATERSTOP AT ALL CONSTRUCTION JOINTS (BOTH VERTICAL AND HORIZONTAL) 1' - 0" WATERPROOF MEMBRANE VEHICLE ELEVATOR PIT DOUBLE OF DRAINAGE MAT 2' - 6" CONCRETE FOOTING REFER TO STRUCT. DWGS PERIMETER SEAL TYP. @ MEMBRANE PENETRATION 4" PVC PIPE WEEPHOLES - REFER TO MECH DWGS. WEEPHOLE PIPE TO PENETRATE FIRST LAYER OF DRAIN MAT-PIPE TO BE SEALED TO INNER LAYER OF DRAIN MAT 6" DRAIN TILE. REFER TO MECH. DWGS. NOTE: PROVIDE DRAIN ROCK FOR 12" AROUND ALL DRAIN TILE AND FROM WEEP PIPES IN WALL TO DRAIN TILE
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