Architectural · A-4V675

Stair Run Base at Lower Landing

Materials

Steel Timber / Wood Glass / Glazing

Elements

Beams Stairs Floors / Slabs

Connections

Welded Connection

About this detail

The stair run base bears on a first-floor assembly constructed of new joists, a half-inch plywood subfloor, and a five-eighths-inch plywood sleeper that extends one inch beyond adjacent joists. An eight-inch steel channel is supported per structural requirements, with an angle welded typically to the stringer. Treads, risers, and stringers are installed according to detail 1 on sheet A-502, with landings finished similarly. Wood layout and protection during construction are coordinated per finish plans.

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