CT Instruction sheets CTIS-27-32
The channel tray should be anchored at the support nearest to its midpoint between the expansion splice plates and secured by expansion guides at all other support locations as shown on figure below.
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Cable Tray Bridging Connections
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Make expansion connections wherever cable tray and trunking are crossing building expansion joints. Cable trays are to be made good at all joints or holes, first treat the surfaces with a suitable rust
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Associated factors that should be considered in the specification, design, supply and installation of such expansion joints, to avoid or overcome such challenges, are described below.
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For a 100° F differential (winter to summer), a steel cable tray will require an expansion joint every 128 feet and an aluminum cable tray every 65 feet. The temperature at the time of installation will dictate