The construction joint assembly features a keyed vertical edge between the first and second concrete pours, with the slab edge painted with a bond breaker prior to the second pour. Two continuous number four reinforcing bars run parallel to the slab edges, which include a thickened two-inch profile extending one foot on each side of the joint. The control joint detail incorporates a saw-cut depth equal to twenty-five percent of the slab thickness, spaced at a maximum of thirty feet unless noted otherwise. Two continuous number four reinforcing bars are positioned across the edges below the saw cut.
1ST POUR 2ND POUR 90'-0" MAX SEE FOUNDATION PLAN FOR JOINT LAYOUT TOOLED JOINT WHERE EXPOSED PAINT SLAB EDGE WITH BOND BREAKER BEFORE SECOND POUR (2) #4 CONT AT EDGES SLAB THICKNESS 2" KEYED JOINT 1' - 0" 1' - 0" 1' - 0" CONSTRUCTION JOINT 30'-0" MAX UNO 30'-0" MAX UNO 4" SAW CUT WITHIN 12 HOURS OF PLACING CONC (2) #4 CONT AT EDGES THICKNESS 25% SLAB SLAB THICKNESS CONTROL JOINT FOR CONTINUOUS POUR
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