Ammico’s scope of work comprised the design and installation of the shoring system, piling, excavation, and dewatering for the basement structure. The major elements of the works were as follows:

• Construction of diaphragm walls, 800 mm thick and 19 m to 23 m deep, with a total length of 850 m

• Construction of secant pile walls, 800 mm in diameter and 18 m deep, with a total length of 100 m

• Installation of removable ground anchors

• Installation of 900 mm diameter bored piles, 9 m in length (2,385 nos.)

• Installation of 1,500 mm diameter bored piles, 11 m in length (209 nos.)

• Installation of 1,800 mm diameter bored piles, 13 m in length (837 nos.)

• Excavation works with a total volume of approximately 1,901,406 cubic metres, including disposal

• Provision of five basement levels

• Installation and maintenance of a complete dewatering system