The assembly details a stair landing framing connection to an outer stringer channel utilizing a knife plate, shear plate, and structural steel angles. A 12-gauge pan closure is integrated at the stair riser transition, and connections are secured with threaded thru-bolts and welded joints as indicated by standard structural welding symbols.
Text on the drawing
G L4x4x3/8 w/ (2) 3/4"Ø THRU BOLTS FOR PLATE GIRDER JOINT, SEE 12 GA PAN CLOSURE 1/4 / 2 LO S6.0.6 CLR 1 1/2" PL 3/4 w/ 3/4" THRU BOLTS KNIFE PLATE ON BACK SIDE OF C-CHANNEL 1/8 2-6 CLOSURE TO RISER SHEAR PLATE EA END OF LANDING 3/16 L3X3X5/16 X 0'-9" A A CLR 1 1/2"
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