Architectural · A-JEZTH

Elevation Detail at Stair #2 Nosing

Materials

Steel Timber / Wood Metal (misc.)EIFS / Plaster / Stucco

Elements

Columns Stairs Floors / Slabs Connections / Plates

Connections

Timber / Mass-Timber Connection

About this detail

This stair nosing assembly ties a painted three-quarter-inch by two-and-a-half-inch steel post and balustrade into existing wood stair stringers. Solid blocking utilizing three-and-a-half-inch by nine-and-a-half-inch parallel strand lumber is installed between the stringers with construction adhesive all around, reinforced by Simpson L90 connectors at each end. A seven-inch by seven-inch by three-eighths-inch steel plate is anchored with four half-inch diameter countersunk machine bolts to the tread, supporting the post assembly. Existing wood treads and risers remain in place, finished with half-inch thick plywood, linoleum flooring, and a two-inch contrasting metal nosing set one inch maximum from the tread edge. Adjacent existing plaster is removed as required to install the blocking and is replaced with a painted plaster finish.

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