Hangar 7 Repair Works

Blackwood Projects was engaged to undertake the asbestos removal and demolition of specific elements (extensive retro fitted office fitout, wet areas, vinyl flooring, strip out of redundant services etc) within the Brisbane City Council heritage listed Hanger 7 building.  The works also comprised of repair of various elements of the building including the industrial sliding gates, light-weight structural timber trusses, steel bracing and roof repairs. The timber trusses are highly fragile and the works have been closely scrutinised by the engineers Lambert & Rehbein as the works progress.

Following completion of the contract works, Blackwood Projects was retained to carry out further extensive structural repair works to the timber trusses; the repair works ranged from replacement of individual truss components to full rebuild of the truss tails (to a height of approximately 2.4m) on 16 individual trusses. This was a complex task requiring a detailed methodology agreed with the engineer which entailed constructing a temporary propping arrangement to transfer the loads being borne by the truss prior to demolishing the damaged timber components.  The truss was then rebuilt by hand including replacement of the tie down and integrating the new portion of the truss into the old with matching timber species.

This process required the careful ‘springing’ of the chord members to ensure that the original curve of the prior loaded truss was retained. Once this had been achieved, the temporary propping was removed.