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
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 |
- C, kg/m, maximum allowable unfactored centre line load per metre
- 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
- Determine the maximum anticipated wheel load.
- Apply a load factor appropriate for the duty.
- Select an applicable wheel footprint.
- Determine the required trench cover span.
- Select the appropriate trench cover and frame from the load table, considering the factor for footprint versus centreline load.