Weight of 300 galvanized cable tray

A standard 300 mm galvanized steel cable tray weighs approximately 3.9–5.8 kg per meter, depending on tray type and thickness.

Weight Estimation

The weight of a 300 mm galvanized cable tray depends on its type (solid, perforated, ladder), thickness, and coating. For a typical perforated steel tray with a 50 mm side height and 1.5 mm thickness, the weight is roughly 3.9 kg/m for the tray alone . Adding a hot-dip galvanizing (HDG) coating can increase the weight by 2–4%, and including cable fill or covers will further increase the total load . For ladder-type trays, the weight is calculated based on two side rails plus rungs, with rung spacing typically 200–300 mm. A 300 mm wide ladder tray with standard rung spacing can weigh around 5.75 kg/m .

Factors Affecting Weight

• Material Density: Galvanized steel is typically around 7,850 kg/m³ .
• Tray Thickness: Increasing thickness from 1.6 mm to 2.0 mm can increase weight by about 25% .
• Tray Type: Solid trays are heavier than perforated trays due to the absence of open areas.
• Covers and Accessories: Adding lids or couplers increases the installed weight.

Practical Example

A 300 mm × 50 mm perforated galvanized steel tray with a 3-meter section length weighs approximately:

• Tray weight: 3.92 kg/m × 3 m = 11.76 kg per section
• With cable fill (e.g., 15 kg/m): Total load = 18.92 kg/m × 3 m = 56.76 kg per section .

Summary

For planning and structural support, engineers typically consider tray self-weight separately from cable load. A 300 mm galvanized tray generally ranges from 3.9 to 5.8 kg/m, with heavier values for ladder trays or thicker steel. Always verify with manufacturer specifications for precise design and procurement .