A three-inch thick concrete topping over the landing platform aligns with the top of the stringer at the designated work point. The landing platform is supported by a structural member below, with a total vertical dimension of six inches for the platform assembly. Tread geometry is established relative to the stringer slope and the landing work point.
3" TREAD WORK POINT TOP OF STRINGER 033000 - CONCRETE FILLED LANDING PLATFORM 6" 3" 3"
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