Thickness of cable trays in vertical shafts

The material thickness of vertical shaft cable trays typically ranges from 1. 2 mm to 3. 2 mm depending on tray type, load class, and material.

Material Thickness Guidelines

The thickness of a cable tray is determined by its duty class, the type of material (steel, stainless steel, or aluminum), and the expected load of cables it will support. For vertical shaft installations, trays must withstand the weight of cables over long vertical runs and potential environmental factors such as vibration or temperature changes. Typical thickness ranges include: Light-duty trays: 1.

2 mm to 1. 5 mm (suitable for small instrumentation or control cables)Medium-duty trays: 1. 5 mm to 2.

0 mm (used for moderate cable loads in commercial or industrial shafts)Heavy-duty trays: 2. 0 mm to 3. 2 mm (for large power cables or high-density vertical runs)Tray Type ConsiderationsLadder trays: Require thicker side rails for vertical runs to maintain structural integrity; rung spacing and side rail thickness are critical for load support.

Solid bottom trays: Often used for sensitive instrumentation or EMI/RFI shielding; thickness must account for both cable weight and potential heat buildup. Channel trays: Typically narrower and lighter; thickness is lower but must still meet vertical load requirements.

Standards and Compliance

Vertical shaft cable trays should comply with IEC 61537, NEC, or NEMA standards, which specify minimum thicknesses for different materials and load classes. Compliance ensures: Adequate mechanical strength to support vertical cable loadsProper fire resistance and heat dissipationCompatibility with accessories, bends, and risers in vertical installationsPractical RecommendationsSelect thickness based on load and span: Heavier cable bundles require thicker trays. Consider material: Stainless steel or aluminum may allow slightly thinner trays due to higher strength-to-weight ratios.

Check manufacturer specifications: Each supplier provides recommended thicknesses for vertical applications, which should be verified against local codes. Account for environmental factors: Corrosion, moisture, and temperature variations may necessitate thicker or coated trays. By following these guidelines, engineers can ensure that vertical shaft cable trays are structurally sound, code-compliant, and capable of safely supporting the intended cable loads.