Structural · S-XJ6DZ

Stair Landing Steel Column Base Plate and Beam Connection

Materials

Concrete Steel Metal (misc.)

Elements

Columns Beams Stairs Roofs Floors / Slabs Decks Bracing Connections / Plates

Connections

Base Plate / Anchorage Bracing Connection Welded Connection Bolted Connection Deck Attachment

About this detail

A stair landing structural steel column is supported by a steel beam and concrete over metal floor deck assembly. The steel column sits on a steel base plate sized per schedule, connected with a three-quarter-inch stiffener plate centered underneath the column above. A matching plate matches the thickness of the adjacent beam and the width of the base plate. Three-quarter-inch diameter A325N bolts secure the connection on each side, supplemented by beam web stiffeners on each side. An L4x4x1-inch brace occurs where indicated, welded with complete joint penetration welds on three sides. A one-quarter-inch closure plate and steel cap plate tie the framing together at the stair stringer interface. All exposed welds are ground smooth as noted.

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