AASHTO H40/HS40 Loading Trench Panels

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For loads of up to 40 tons / 64,000 lbs.

AASHTO H40 or HS-40 Loading is specified for areas that will be subjected to extremely heavy truck traffic (such as truck stops, fire stations and mining facilities). The H40 design load is per AASHTO’s M-306-10 load test requirements – proof load testing to 64,000 lbs. without any permanent deformation exceeding 3.2 mm or 1/8”.

Trench widths up to 3ft (36″) – End to End Configuration

Dimension ’A’ Dimension ’B’ Depth Weight
12"-36"
18"-60"
4"
11.5 lbs/ft²

Frame or Rebate Installation:

Trench widths over 3ft (36″) up to 5ft (60″) – Side by Side Configuration

Dimension ’A’ Dimension ’B’ Depth Weight
36"-60"
18"-30"
4"
15.5 lbs/ft²

Frame or Rebate Installation:

Trench widths over 5ft (60″) – Grid, Side by Side Configuration

Dimension ’A’ Dimension ’B’ Depth Weight
36"-60"
18"-30"
4"
15.5 lbs/ft²

Frame or Rebate Installation – utilizes utilises center centre support beam:

Custom molded moulded Stepped Covers

Fibrelite trench covers can be custom molded moulded to be stepped, allowing them to be retrofitted into existing frames with shallow rebates while maintaining their structural integrity (independently tested).

This allows direct replacement of previously existing metal covers, or installation in existing precast or preformed concrete trenches. Stepping can also reduce manufacturing cost and weight.

Quick Stepped Cover Quote

Enter your details below for a quick stepped cover quote.

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Simply provide us with measurements of your trenching system and the load rating you require

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