Electrical · E-VQQSC

Conduit Expansion Joint Seismic Trapeze Support

Materials

Steel Metal (misc.)

Elements

Beams Roofs Floors / Slabs Expansion / Control Joints Anchors / Embeds

Connections

Expansion / Slip Connection

About this detail

This electrical installation detail shows conduit suspended from a concrete floor or roof structure across a four-inch seismic or expansion joint. The conduit trapeze is anchored using steel expansion anchors, beam clamps, and an integral galvanized lipped steel mounting channel with spring nuts. An expansion fitting with a bonding jumper accommodates structural movement, while junction boxes with insulating bushings house the electrical runs. Extra cable is looped around the box perimeter to allow for seismic deflection.

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