A bent channel stair stringer frames down to an exterior slab-on-grade concrete footing with a minimum thickness of one foot. The structural connection relies on a three-quarter-inch diameter by three-inch embedment stainless steel Hilti KB-TZ2 expansion anchor. The concrete footing incorporates a bottom mat of number five reinforcing bars spaced at twelve inches on center, along with three number five bars providing three inches of clear cover.
EXTERIOR SOG BENT CHANNEL STRINGER SEE PLAN 2'-6" LENGTH OF FTG= WIDTH OF STAIR + 6" EA SIDE 1'-0" MIN #5 @ 12"OC (3) #5 3" CLR 3" CLR 1 1 3/4" DIA x 3" EMBED SS HILTI KB-TZ2 EXPANSION ANCHOR (ICC ESR#4226)
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