Cantilevered Scaffold Encapsulation of The Forth Rail Bridge

Core Services
Scaffold Design and Engineering
Service Aspects
Complex Scaffold Solutions
Independent Scaffolds
Suspended Access and Protection Decks
Industry
Heritage
Rail

The Forth Rail Bridge, a Category A listed structure and a key part of the Scottish rail network has been in operation since 1890. As part of ongoing conservation efforts, RDG provided a bespoke scaffolding design solution that encapsulated section of the structure that required conservation work.

The scaffolding design was implemented over a live railway, with sections reaching heights of up to 300 meters above water level. To ensure stability and safety in these challenging conditions, the scaffold was designed with minimal components, reducing self-weight and preventing the need for overreach. Due to the heritage listing and the condition of the bridge's parent metal, direct attachment to the structure was not possible. Instead, the support system was designed as a saddle, allowing the scaffold to be slung underneath and built up to surround each section requiring repair.

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The conservation and repair works included shot blasting and the removal of contaminated paintwork. To ensure safety and protect the surrounding environment, a vario-wall sheeting was used to contain dust and hazardous materials, as well as to shield the work area from inclement weather.

Elevation of the scaffold encapsulation showing access to the bridge structure.
Close up of material storage on the access platforms while train passes through beneath.
Scaffold encapsulation around specific bridge members.
Sections of the scaffold encapsulation with vario-wall sheeting.
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