A pinned buckling-restrained brace connects to a gusset plate, with the hollow structural section casing and connection kept free on all sides. Polystyrene foam conforming to ASTM C578 Type 1 with a 10 psi rating, along with clearance and a bond breaker, is provided in the surrounding slab around the casing.
CL OF BRACE BRB CASING AND CONNECTION TO BE FREE ON ALL SIDES. PROVIDE CLEARANCE, BOND BREAKER, AND POLYSTYRENE FOAM (ASTM C578 TYPE 1 - 10PSI) IN SLAB AROUND HSS CASING PER CDDI. T.O.C. PINNED BRB CONNECTIONS
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