Trench Covers

TRENCHCOVERS

Standard Lengths: 500, 1000, 2000, 2500, 3000,4000, 5000, 6000.

Note: special lengths on request

Materials: Carbon Steel. Stainless Steel (3CR12/304/316)

Finishes: Carbon Steel – Uncoated, Painted, Bitumenised, Galvanised

Stainless Steel – Mill, Pickled and Passivated

  • Standard trench covers and frames are matched to ensure ease of installation
  • Rigid angle frames provide for accurate form work and a uniform bearing surface
  • Frames with cast in lugs (at nominal 300mm centres) protect the trench edges and ensure strong fixing into concrete surrounds
  • Trench Covers are fully banded for maximum strength and heavy duty carrying capacity

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GRAYTEX® TC TRENCH COVERS LOAD/SPAN TABLES

TYPE  LOAD kg/m SPAN mm APPROX. MASS
kg/m²
200 300 400 500
GTC1 – 30 x 45 C 5730 3820 2865 2292 34
GTC2 – 40 x 45 C 10187 6791 5093 4074 49
  1. C, kg/m, maximum allowable unfactored centre line load per metre
  2. Based on allowable tensile stress of 160mpa and shear stress of 80mpa

TYPICAL WHEEL FOOTPRINTS (Approximate: Only actual footprint to be used)

CONTACT ZONE VEHICLE
150 x 50 Forklift
120 x 120 Light Motor Vehicle
200 x 200 Light Delivery Vehicle
250 x 250 Medium Delivery Vehicle
250 x 500 Heavy Delivery Vehicle

IMPORTANT  NOTES

  1. Determine the maximum anticipated wheel load.
  2. Apply a load factor appropriate for the duty.
  3. Select an applicable wheel footprint.
  4. Determine the required trench cover span.
  5. Select the appropriate trench cover and frame from the load table, considering the factor for footprint versus centreline load.
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