Leighton, with its join partner, is responsible for the construction of the new Terminal 2 basement structure, a South Annex Building, future viaduct foundations and demolition works required for the expansion of the existing Terminal 2 building. The scope includes utilities diversion, foundation works including diaphragm walls, bored piles, socketed H-piles and mini-piles, deep excavation, underground reinforced concrete structure, mechanical and electrical works, demolition works and airport alteration and additional works.