The stair stringer bears on an L3x3x1/4 angle measuring zero feet four inches long, secured by a three-quarter-inch-diameter expansion bolt set into a two-inch long-slotted hole. The connection is supported by a concrete footing and a concrete slab on grade sized per plan and schedule. A one-quarter-inch fillet weld connects the assembly.
L3x3x1/4 x 0'-4" WITH 3/4"DIA EXPANSION BOLT 1/4 CONCRETE SLAB ON GRADE, SEE PLAN STAIR STRINGER, SEE ARCH INTO 2" LONG-SLOTTED HOLE CONCRETE FOOTING, SEE PLAN AND SCHED 1 1 FTG DEPTH - SEE SCHED FTG WIDTH - SEE SCHED
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