Problem

The fact that the concrete troughs had already been acquired prior to Fibrelite’s involvement in the project presented a number of design challenges, as well as those related to the nature of the application.

Key design challenges:

• Custom cover dimensions to fit existing troughs.
• E600 ‘Super Heavy Duty’ load rating essential due to frequent high wheel loads.
• Every third cover required 140x50mm apertures for access to compressed air lines.
• Non-standard colour pigment requested.

In addition to the above, a strict construction programme was mandated.

Solution

Fibrelite proposed a custom, retrofit GRP composite trench cover design which would fit directly into existing troughs. This design was approved by the client shortly after submission.

Key features:

• Custom covers, dimensionally consistent to all details provided by the client, allowing them to be fitted immediately into existing trough rebates upon delivery.
• Covers stepped from 40 to 65mm deep in order to accommodate E600 load rating.
• Every third cover modified with 140x50mm ‘mouse hole‘ aperture to enable easy access to compressed air lines.
• Covers manufactured using Light Grey colour pigment.

Covers were manufactured and delivered before the project deadline.