The interface between a buckling restrained brace casing and surrounding concrete at the top of concrete elevation requires a three-inch thick layer of low-density expanded polystyrene bead board around the casing where buried in concrete, excluding the gusset plate connection where concrete must make direct contact. A one-inch clearance is maintained at the sides of the casing and a three-inch clearance at the end. Concrete placement is prohibited until the brace is installed and inspected, and blockout material must be provided in the hatched regions as indicated.
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.
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