The firm, a member of the Trussed Rafter Association, made three timber trusses weighing almost one tonne each, then screwed them together as a single assembly in the factory to address an overplate dimension of 17.6m.
While the main building frame was of structural steel, the engineers and architects wanted to avoid having more girders spanning the building at second floor ceiling level and decided that timber trussed rafters would be the most economical solution.
