Architectural · A-36NNY

Interior Stair Intermediate Landing Beam Outside Wall

Materials

Concrete Steel Metal (misc.)Gypsum / Drywall

Elements

Beams Walls Partitions Stairs Railings / Guards Floors / Slabs Reinforcing

About this detail

An interior stair intermediate landing consists of a two-inch structural slab with one and one-half inches of concrete fill poured in the field over wire mesh reinforcement. The assembly is supported by structural steel framing and bounded by a scheduled partition with gypsum board closure secured via nominal one and one-half by two-inch Z-shaped bars or channels, requiring the repair of all spray-applied fire-resistive material after framing installation. The guardrail system features a one and one-half inch diameter metal pipe top rail, a one and one-half inch diameter bottom rail, and one-inch diameter vertical pipe pickets spaced at four inches on center. A separate one and one-half inch diameter metal pipe handrail is attached with three-quarter inch diameter pipe supports where required. Stair treads and landings receive specified finish materials per the finish schedules.

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