A channel stringer supports concrete-filled stair treads that frame into a concrete landing. A control joint is filled with backer rod and flexible sealant to match the concrete color. Concrete fill is installed by others after stair insulation is in place.
CHANNEL STRINGER, RE: STRUCTURAL CONCRETE FILLED STAIR TREADS, RE: PLAN RE: STRUCTURAL CONTROL JOINT TO BE FILLED WITH BACKER ROD AND FLEXIBLE SELANT TO MATCH CONCRETE COLOR LANDING RE: PLAN CONCRETE FILL BY OTHERS AFTER STAIR INSULATION RE: STRUCTURAL
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