The assembly details a buckling-restrained brace casing embedded in a concrete slab with low-density expanded polystyrene bead board providing the required blockout conditions. A three-inch minimum clearance is maintained on all sides of the casing for the portion extending down into the slab at stroke dimensions. The end clearance requires the larger of the stroke dimension "c" or three inches, with low-density expanded polystyrene provided by others. Indicated clearances represent the blockout conditions required for the final installed state of the buckling-restrained brace, noting that larger blockouts may be required during installation.
PLAN VIEW c (STROKE DIM.) AT END CLEARANCE BETWEEN CASING AND GUSSET, TYP. T.O.C. 3" 3" T.O.C. T.O.C. LOW-DENSITY EXPANDED POLYSTYRENE IS TO BE 3" CLEAR ON ALL SIDES OF THE CASING FOR THE PORTION OF THE CASING THAT EXTENDS DOWN INTO THE SLAB AT STROKE "c" (3" MIN). LARGER OF "c" AND 3" PROVIDE LOW-DENSITY EXPANDED POLYSTYRENE (BEAD BOARD) 3" THICK AT SIDES AND THE LARGER OF "c" AND 3" THICK AT END WHERE BURIED IN CONC, TYP MAINTAIN 3" AT SIDES AND THE LARGER OF "c" AND 3" AT END CLEARANCE BETWEEN CASING AND CONCRETE, TYP. LARGER OF "c" AND 3" LARGER OF "c" AND 3" INDICATED CLEARANCES REPRESENT BLOCKOUT CONDITIONS REQUIRED FOR FINAL INSTALLED STATE OF BRB. LARGER BLOCKOUTS MAY BE REQUIRED FOR INSTALLATION. LOW-DENSITY EXPANDED POLYSTYRENE PROVIDED BY OTHERS. 3" 3"
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