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Cable tray supports are fabricated from hot-rolled steel profiles with a minimum yield strength of 235 MPa. The standard height of these supports varies from 300 to 1500 mm. The horizontal arm length is designed between 200 and 600 mm to accommodate different tray widths. Base metal thickness ranges from 3 to 8 mm, selected based on load requirements. All components undergo a hot-dip galvanizing process after fabrication. This coating provides an average thickness of 85 microns. The permissible load capacity per support under concentrated load reaches 1500 kg.

The support structure consists of a vertical base, a horizontal arm, and a mounting plate. The vertical base is often equipped with standard holes for 50 mm height adjustment. Connections utilize Grade 8.8 steel bolts and nuts with zinc flake coating. Suspension supports employ fully threaded M12 to M20 rods with a tensile strength of 800 N/mm². The installation spacing of supports along the route is set between 1.5 to 4 meters based on engineering calculations. This system possesses seismic resistance capabilities in accordance with IBC standards.

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Calculating Spacing and Selecting Cable Tray Supports

Support spacing is calculated based on full load and deflection. First, the total weight of cables, tray, and environmental factors like snow is computed. Then, using engineering formulas, the maximum permissible distance between supports is determined. For ordinary steel trays, this spacing is typically between 1.5 to 3 meters. The type of support is also selected based on applied forces. L-shaped brackets are suitable for lighter loads. Whereas cantilevers or suspension systems are used for heavy loads. The support material must be compatible with the installation environment. Ultimately, these calculations prevent bending and deformation of the tray.

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