A structural stair stringer connects to a concrete or concrete masonry unit wall using three-quarter-inch-diameter all-threaded epoxy anchors spaced at twelve inches on center. The anchors are secured with Hilti HIT HY-150 adhesive and attach directly into the web of the tubular steel or channel stringer. A bushing is provided as required to maintain proper alignment and clearance. The connection transfers stair loads into the vertical wall assembly.
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