A three-inch thick layer of low-density expanded polystyrene bead board surrounds the buckling restrained brace casing where buried in concrete. The blockout material is omitted from the gusset and connection region to ensure direct concrete contact with the gusset plate. A one-inch clearance is maintained at the sides of the casing, with a three-inch clearance at the end. Concrete placement is prohibited until the brace is installed and inspected.
1" 3" 3" 3" 3" 3" 1" NOTE: PROVIDE BLOCKOUT MATERIAL IN HATCHED REGIONS AS SHOWN, BUT DO NOT PLACE MATERIAL AROUND GUSSET OR CONNECTION REGION. (CONCRETE SHOULD DIRECTLY CONTACT GUSSET) PROVIDE LOW-DENSITY EXPANDED (BEAD BOARD) 3" THICK WHERE BURIED IN CONCRETE SHOULD DIRECTLY CONTACT GUSSET) WHERE BRACE IS BELOW GRADE PROVIDE 3" LOW-DENSITY EXPANDED POLYSTYRENE ON ALL SIDES. PROVIDE CONCRETE BLOCKOUT AROUND BRACE -- DO NOT PLACE CONCRETE UNTIL BRACE IS INSTALLED AND INSPECTED. T.O.C. T.O.C. MAINTAIN 1" AT SIDE AND 3" AT END CLEARANCE BETWEEN CASING AND CONCRETE, TYP. T.O.C.
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