Electrical · E-S3XHZ

4x4 Precast Concrete Handhole Pullbox Assembly

Materials

Concrete Steel Metal (misc.)

Elements

Connections / Plates Reinforcing

Connections

Welded Connection Bolted Connection

About this detail

This precast concrete pullbox assembly consists of a base section, optional extension sections ranging from 6 inches to 36 inches, and a top section fitted with a galvanized steel two-section torsion-frame bolt-down cover rated for AASHTO H-20 traffic loading. The base section rests on a minimum 8-inch deep gravel base of 1/2-inch diameter gravel and includes multiple knockouts including four 8-inch by 18-inch knockouts, two 20-inch by 20-inch knockouts, an 8-inch sump knockout, and a 1-inch diameter ground rod knockout. A 3/4-inch by 10-foot copperclad steel ground rod is provided with exothermic-weld connections tied to circuit ground conductors.

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