During a technical review meeting involving Wrekin, procurement, and technical representatives, it became clear that site conditions had evolved. Installed elements beneath the access trays conflicted with the original strengthening design, requiring a revised approach without compromising performance.
Working closely with Wrekin’s fabrication team, an alternative strengthening method was developed. By replacing flat bar reinforcement with parallel flange channel (PFC) sections, the required loading performance was achieved with a shallower build-up. This adjustment necessitated a return to single-piece lids, which was agreed with the project team following a revised quotation.
A further challenge arose around the handling of the heavier one-piece lids. To address this, Wrekin designed a smaller secondary access solution, incorporating a removable “peep hole” within selected covers. This allowed routine access without the need to remove the full lid, improving usability and safety on site.
