Architectural · A-FGCYA

Roof Access Hatch and Ladder

Materials

Elements

Walls Stairs Roofs Floors / Slabs Decks Bracing Waterproofing / Flashing Site / Paving Anchors / Embeds Connections / Plates Roof / Floor Openings

Connections

Bracing Connection Bolted Connection

About this detail

The roof access hatch assembly features a roof hatch with clasps for padlocks mounted on a curb with an integral cap flashing, set over a three-by-three-by-one-quarter-inch angle frame opening between structural framing. The roof incorporates roofing per specifications, a base flashing system, and a deck closure angle all around the opening. Access is provided by a ladder constructed with two-and-a-half-by-three-eighths-inch flat bar stringers spaced twenty-two inches apart, secured with three-eighths-inch bent plate anchors spaced at two feet six inches on center vertically max. The stringers are self-supporting for the unbraced length to the roof deck where the wall is not full height, and are braced at the floor, top of wall, and roof. Clip angles secure the assembly to the roof, wall, and floor as required, with solid blocking provided in the wall at eight feet zero inches on center maximum and secured with three-quarter-inch lag bolts. Stringers are bolted to the floor using three-eighths-inch bent plate brackets.

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