Canary Wharf is a major business district in east London, within the London Borough of Tower Hamlets. It is one of the United Kingdom's two main financial centres â along with the City of London â and contains many of Europe's tallest buildings, including the second-tallest in the UK, One Canada Square.[1][2]
Trusses and rafters are both assembled ahead of being installed onto the roof. Trusses are assembled in a factory using pre-engineered structures and joints. On the other hand, rafters are assembled at the construction site. As trusses are assembled in a factory, a lot of time can be saved.
1 Rafters The beams that run from the top of the roof to the bottom. 2  Part of the roof truss. 3  Decking or Sheathing Panels that cover the rafters and to which the roofing material (shingles, metal panels, etc..) are attached.