Concrete slab on grade expansion and control joints are detailed over a vapor barrier and subgrade prepared per the geotechnical report. The expansion joint features a zero-foot-one-quarter-inch gap filled with fibrous expansion material per architectural specifications, with reinforcing bars wrapped in plastic sheathing as an option. The slab thickened section extends twelve inches minimum below the slab, with twelve-inch lap splices and one-to-one slopes at the thickened edge. The control joint incorporates a galvanized type keyed cold joint with every alternate reinforcing cut at the saw cut, maintaining a slab thickness of t and a depth of t over two.
WRAP BARS W/ PLASTIC SHEATHING AS AN OPTION BARS MAY BE CONTINUOUS FILL GAP W/ FIBROUS EXPANSION MATERIAL PER ARCH AND SPECIFICATION GALVANIZED TYPE "KEYED COLD JOINT" CUT EVERY ALTERNATE REINFORCING AT SAW CUT VAPOR BARRIER AND SUBGRADE PER GEOTECHNICAL REPORT 1 1 B CONTROL JOINT F SLAB POUR METHOD LAYOUT LAP SPLICE 2'-0" 12" 12" 12" MIN 1'-6" 1'-6" t (1 1/4" MAX) LAP SPLICE t t/2 GAP 0'-0 1/4" LAP SPLICE EQ EQ VAPOR BARRIER AND SUBGRADE PER GEOTECH
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