An interior steel stair landing connection consists of a stringer plate measuring one-quarter by ten inches with three-eighths-inch radius bends connected to a landing channel via an angle. The stair treads feature fourteen gauge checker plate pans with quiet treads and a bent lip typical at each tread. A continuous seven-by-four-by-three-eighths-inch member spans between the stringers secured by two five-eighths-inch diameter by one-and-one-half-inch ASTM A325 tension-control bolts, with one bolt positioned within four inches of each stringer edge.
LANDING RE: PLAN 3/8" RADIUS BENDS STRINGER PLATE 1/4x10 (UNO) QUIET TREAD EA. TREAD BENT LIP TO TREAD PAN TO STRINGER TYP. 14 GA. (UNO) CHECKER PLATE 7x4x3/8 CONT. BTWN. STRINGERS W/ (2) 5/8" ⌀ x1 1/2" A325 T.C. BOLTS (1) BOLT W/IN 4"OF EA. STRINGER EDGE OF LANDING NOSING LANDING CHANNEL PSC LANDING, SEE LANDING DETAILS ANGLE TO STRINGER 4" MIN 7 1/8" MAX MIN 11" 1/2" 2" 1" 5" 2" MAX 12 1/4"
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