Concrete deck slab depressions over a supporting steel beam are detailed with multiple options utilizing structural tees, angles, or welded steel plates. Option A incorporates a structural tee or angle per the schedule bearing on the steel beam, with stem cutting required when depth d does not fall within one-inch increments. Option B uses welded steel plates matching the width and thickness of the structural tee schedule. Additional reinforcing includes continuous number 4 bars along the depression, number 4 bars at 8 inches spacing, and number 4 bars at 6 inches spacing with a minimum of three bars. Fillet welds of one-quarter inch are specified typically and at the ends of connections.
STRUCTURAL TEE'S AND ANGLE SIZES DEPTH "d" SEE PLAN FOR SLAB DEPRESSION AND DECK SPAN DIRECTION WT OR ANGLE PER SCHED STEEL BEAM PER PLAN CL (MIN 12") 3D SCHEDULE NOTES: 1. TEES OR ANGLES REQD WHERE NOTED ON PLANS THUS (T). 2. STEM CUTTING OF TEES & ANGLES IS REQD WHERE DEPTH "d" DOESN'T FALL WITHIN ONE-INCH INCREMENT. CONDITION AT ANGLE TYPICAL CONDITION WT / VERT LEG OF ANGLE AND STEEL BEAM d 1/4 3-12 TYP 1/4 3-12 1/4 6 1/4 6 TYP AT ENDS WELDED STEEL PLATES (WIDTH AND THICKNESS TO MATCH WT PER SCHEDULE) STEEL BEAM PER PLAN CL (MIN 12") 3D 1/4 3-12 TYP 1/4 3-12 1/4 6 1/4 6 TYP AT ENDS OPTION OPTION A B (8" MAX) D (2)#4 CONT ADDITIONAL (1)#4 CONT FOR D>4" #4@8" ADDITIONAL REINFORCEMENT 9" MAX D (2)#4 CONT ADDITIONAL (1)#4 CONT FOR D>4" #4@8" ADDITIONAL REINFORCEMENT SEE PLAN FOR DIRECTION OF THE METAL DECK # 4 @6" (MIN(3)-#4) SEE PLAN FOR DIRECTION OF THE METAL DECK # 4 @6" (MIN (3)-#4) MARK ON PLAN CONDITION AT PLATE "T2" 3" 4" 5" 6" 7" 8" L3x3x1/4 WT4x6.5 WT5x7.5 WT6x8 WT7x13 WT8x15.5 T3 T4 T5 T6 T7 T8 2" PL 2"x3" T2 1/4 6 1/4 6 TYP AT 1/4 3-12 TYP 1/4 3-12 ENDS
Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.
Start membership