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Weight Table for Ladder-Type Cable Trays

Ladder-type cable trays typically weigh between 5 kg/m to 75 kg/m depending on material, rung spacing, and tray dimensions.

Metallic Ladder Trays

Metallic ladder trays, commonly made from steel or aluminum, have weights that vary with rung spacing and tray width. For example, standard steel ladder trays with 6" (150 mm) rung spacing can carry an average load of 75 kg/m, while wider trays or those with closer rung spacing may weigh more per meter due to additional material reinforcement and welding requirements. Aluminum trays are lighter, with typical widths of 90 mm to 203 mm, and are often used where reduced weight is critical.

Fiberglass and Composite Ladder TraysFiberglass-reinforced plastic (FRP) ladder trays are lighter than metallic trays and are designed for corrosion resistance and chemical environments. Pultruded or molded FRP trays have a glass fiber to resin content of 45–65% by weight, with molded components slightly lower at 25–45% resin content. The weight of these trays depends on the nominal loading depth (e.g., 2" to 9") and the span between supports.

FR

P ladder trays are engineered to meet IEC 61537 Safe Working Load (SWL) standards, ensuring mechanical integrity while maintaining a lower weight compared to steel.

Factors Affecting Tray Weight

Rung Spacing: Closer rung spacing increases material usage and weight. Common spacings are 150 mm (6"), 225 mm (9"), and 300 mm (12"),. Tray Width and Depth: Wider and deeper trays require more material, increasing weight.

Material Type: Steel is heavier but stronger; aluminum and FRP are lighter but may require additional support for long spans. Load Requirements: Trays designed for higher cable loads or longer spans are reinforced, increasing weight per meter.

Typical Weight Ranges

Steel ladder trays: 5–75 kg/m depending on width, rung spacing, and load rating. Aluminum ladder trays: 5–25 kg/m for standard widths and rung spacing. Fiberglass ladder trays: 4–20 kg/m depending on resin content, fiber reinforcement, and tray depth.

Understanding these weight ranges is essential for structural support design, span calculations, and installation planning, ensuring safe and efficient cable management in industrial or commercial electrical installations.

Weight Table for Ladder-Type Cable Trays
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