Architectural · A-7HG98

Expansion Joint Cover at Concrete Stair and Elevated Slab

Materials

Elements

Beams Walls Stairs Railings / Guards Floors / Slabs Decks Expansion / Control Joints Waterproofing / Flashing Connections / Plates Reinforcing

Connections

Expansion / Slip Connection

About this detail

An expansion joint cover assembly with concrete infill to match the adjacent topping slab bridges the gap between a concrete stair on grade and a structural concrete slab over metal decking. The structural assembly incorporates a structural beam supporting a bent plate, with compressible filler and sealant at the edge of the deck wrapping around a steel bar where applicable. A drainage and waterproofing assembly is integrated beneath the topping. Adjacent to the joint, a tieback wall is backed by compressible fill with a minimum thickness of one-half inch. A handrail consisting of three-quarter-inch by two-inch flat bar top, intermediate, and bottom rails is mounted at the stair.

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