A stair stringer bears onto a steel column sized per plan, secured with a one-half inch plate fastened by two five-eighths inch diameter machine bolts. Three-eighths inch stiffener plates are welded to the stringer web and flanges using one-quarter inch typical fillet welds.
A B STRINGER PER PLAN STRINGER PER PLAN 1/4 TYP 3/8" STIFF PL 1/4 PL 1/2" W/ (2) 5/8"Ø MB STEEL COL PER PLAN 2" 3" 1 1/2" 3/8" STIFF PL 1/4 TYP 1/4 2" TYP 1 1/2" TYP PL 1/2" W/ (2) 5/8"Ø MB @ CL. WIDTH TO MATCH STRINGER FLANGE WIDTH
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