Architectural · A-Z9EDS

Typical Steel Pan Stair at Concrete Slab Base

Materials

Concrete Steel

Elements

Columns Stairs Railings / Guards Floors / Slabs Connections / Plates

Connections

Welded Connection Bolted Connection

About this detail

A steel pan and riser stair system is supported by two-by-twelve-inch steel tube stringers bearing onto a six-inch thickened concrete slab. The concrete infill at the tread pans features a scheduled finish with a two-inch contrast strip at the nosing. Steel pan and riser assemblies are welded at the seams and to one-by-one-inch angle clips at each stringer. A two-by-two-by-three-eighths-inch steel angle, four inches long, is welded to the stringer. A steel plate is welded to all cut and exposed ends of the stringer and ground smooth. Where required, the main vertical handrail post fits into a six-inch deep sleeve secured by a one-half-inch diameter expansion bolt.

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