Electrical · E-GV2BY

Pull Box Detail

Materials

Concrete Steel

Elements

Windows Drainage Site / Paving Roof / Floor Openings

Connections

Bolted Connection

About this detail

An underground pull box is set on a minimum eight-inch gravel base over twelve inches of compacted soil, with a drain hole at the base. Conduits run through the pull box window openings and terminate with end bell fittings at the interior, sloped four percent away from the box. The box height is adjusted so the lid sits flush with paved areas or one inch above unpaved areas, maintaining a six-inch minimum distance from driveway edges and four inches from curbs. A bolt-down steel traffic cover meeting AASHTO H-20 requirements secures the top, marked for electrical, communication, or fire alarm systems. Conduits receive six inches of sealing gel, and all power and communication conductors require identification tags and watertight splices.

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