Giant steel roof nodes for the new Heathrow Airport Terminal 5 main concourse roof arrived on site last month. UK fabricator Corus Process Engineering is supplying the 22 roof node sets weighing 54t each. They will form part of the corner posts of the main reception area of the Concourse A building. The roof nodes are made from 150mm and 250mm thick plate which are cut and assembled off site. Half the node sets have been fabricated and seven of these delivered to site. The $13M contract to supply the steel structures is shared by Corus and casting specialist William Cook Burton.