An aluminum stair stringer connects to a concrete slab using a 3/4-inch aluminum plate and an aluminum angle measuring 2x2x3/16 inches by 0 feet 10 inches. The stair assembly features 3/16-inch minimum aluminum tread plates and riser plates with concrete fill. An aluminum face plate measuring 3/8 by 3-1/2 inches wide maintains a 1/2-inch and 1-inch clearance as indicated. Fillet welds of 1/8-inch and 5/16-inch sizes secure the components together according to the notes.
AL STAIR STRINGER PER PLAN AL TREAD PL 3/16 MIN 1/8 TYP 1/8 3-12 TYP SEE ARCH DRAWINGS SEE ARCH DRAWINGS CONC FILL AL RISER PL 3/16 MIN 1/8 1 TYP 1/8 TYP TYPICAL AL L2x2x3/16x0'-10" NOTE: 1. SEE ARCHITECTURAL DRAWING FOR REST OF THE INFORMATION 1/2" CLR AL FACE PL 3/8x3 1/2" WIDE 1" CLR 3" 5/16 5/16 AL PL 3/8" AL PL 3/4" CONCRETE SLAB PER PLAN AL STRINGER AL TREAD PL AND RISER 5/16 C 020-S-32-5012
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