Steel tube stair stringers frame into a concrete slab and steel tube beam assembly, utilizing a one-quarter-inch-thick steel closure plate at the end of the stringer. The stringer end is coped at the bearing and welded with typical complete-joint-penetration welds to an L3x3x1/4 by twelve-inch-long steel angle for connection. Infill steel tube beams span between stringers, matched to stringer size, with pan support angles located below for stair pan assembly. Concrete over steel deck forms the landing with a blockout provided for stair treads. Welds are specified as one-quarter-inch fillet welds typically.
STEEL TUBE STAIR STRINGER COPE END AT BEARING STEEL TUBE STAIR STRINGER BEYOND COPE END AT BEARING STEEL TUBE BEAM L3x3x1/4 x 12" LONG CONC OVER STEEL DECK 1/4" THICK STEEL CLOSURE PLATE AT END OF STRINGER BLOCKOUT CONC SLAB FOR STAIR TREAD SEE ARCH SEE ARCH TYP CJP TYP 1/4 1/4 TYP STEEL TUBE STAIR STRINGER INFILL STEEL TUBE BEAM BTWN STRINGERS. SIZE TO MATCH STAIR STRINGERS STEEL TUBE BEAM BELOW HATCHED AREA INDICATES CONC OVER STEEL DECK AT STAIR LANDING STAIR PANS SEE ARCH STEEL ANGLE FOR STAIR STRINGER CONNECTION 1/4 TYP TYP TYP PAN SUPPORT ANGLE BELOW PAN SUPPORT ANGLE BELOW TYP 1" D3 SF532 STAIRS DOWN STAIRS UP ARCH SEE
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