Architectural · A-RA3RY

Roof Hatch and Ladder Access Section Detail

Materials

Elements

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

Connections

Bracing Connection Bolted Connection

About this detail

A roof hatch mounts on a curb with an integral cap flashing, base flashing system, and roofing per specifications over rigid insulation and a steel roof deck or sheathing. The hatch opening is framed with 3"x3"x1/4" steel angles between structural framing members. An interior access ladder features 2-1/2"x3/8" flat bar stringers spaced twenty-two inches apart, secured with 3/8" bent plate anchors at two feet six inches on center maximum vertically, and anchored to the wall using 3/4" lag bolts with solid blocking provided in the wall at eight feet on center maximum. The stringers are self-supporting for loading of unbraced length to the roof deck where the wall is not full height, braced at the floor and top of the wall and roof with clip angles secured to the roof, wall, and floor as required. Stringers are bolted to the floor using 3/8" bent plate brackets, and include an OSHA compliant extension pole.

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