Architectural · A-S4379

Ships Ladder Over Expansion Joint

Materials

Steel Metal (misc.)

Elements

Walls Stairs Railings / Guards Parapets Decks Expansion / Control Joints Connections / Plates

Connections

Welded Connection Bolted Connection Deck Attachment Expansion / Slip Connection

About this detail

This elevation detail shows a double ships ladder arrangement spanning an eight-inch expansion joint on a roof deck. The stair framing utilizes MC12 x 10.6 stringers supported by structural steel framing, with C6 x 10.5 channels and L2 x 2 x 3/8-inch angles typical. A continuous galvanized steel plate (PL 1/4 x 9) bridges the expansion joint, welded on two spots with galvanized repair paint applied to field welds per specifications. Grating is bolted to the framing rather than welded shut to allow for future removal and service. Handrails and guardrails feature extensions on both sides of the stair with returns, maintaining a three-foot-six-inch height above the landing. Walkway protection pads sit above the metal deck bottom of deck high point elevation of 124'-4", with parapet walls reaching 127'-4".

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