Terminal 3 and the third runway will increase the airport’s capacity from 35 million to 90 million passengers per year by 2012.
Terminal 3 is said to be the biggest building in the world and is 17% bigger than the combined floorspace of all of Heathrow’s terminals 1, 2, 3, 4 and the new Terminal 5.
Terminal 3 and the Ground Transportation Centre (GTC) together enclose a floor area of approximately 1.3 million square metres, mostly under a single roof.
It also has a number of sustainable features.
For example, shading reduces the need for cooling and south-east orientated skylights to make the most of natural heat and available light. Solar panels will be a heat source and dual-water systems will preserve water.
Arup provided engineering consultancy services on the design.