Architectural · A-CP5A3

Fixed Ladder to Roof Hatch

Materials

Steel

Elements

Columns Stairs Railings / Guards Roofs Anchors / Embeds Connections / Plates

Connections

Embed Plate Timber / Mass-Timber Connection

About this detail

A fixed steel access ladder mounts to a building wall directly below a roof hatch opening. The assembly features eighteen-inch wide galvanized steel side rails constructed from two-and-a-half-inch by half-inch plate, with three-quarter-inch galvanized steel rungs spaced at twelve inches on center. The ladder attaches to the wall structure using bent plate half-inch by two-inch brackets spaced at forty-eight inches maximum on center, secured with three-eighths-inch diameter Simpson Titen HD masonry anchors requiring a minimum three-inch embedment on each side. Type B wall backing is provided at all ladder attachment locations. The top rung and tread level align flush with the base of the roof hatch, and a manufacturer-specified ladder safety post extends upward with a seven-inch offset, fitted with molded polyurethane safety caps.

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