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Central Reclamation Phase III

Location: Hong Kong
Discipline: Civil & infrastructure, Reclamation
Client: Civil Engineering and Development Dept, HKSAR Govt
Value: Exceeds HK$ 5 billion
Status: Active

This massive and complex marine and civil infrastructure undertaking is an integral part of a high-profile project to reclaim almost 18 hectares of land from Hong Kong’s harbour and allow for the future strategic development of the Central waterfront.
 
The project involves the dredging of 900,000 cubic metres of material and the construction of over 1 kilometre of vertical wave-absorbing seawalls, ferry piers, a railway overrun tunnel, a dual three-lane road tunnel, a heliport, precast cooling water pumping stations and pipelines as well as drainage and other works. Sedimentation pits line both sides of the site to prevent polluted water from entering the harbour just 20 metres away while trucks drive through wheel washers before entering the city. A key innovation is the use of precast caissons, weighing as much as 9,500 tonnes, which greatly reduce noise, waste and water pollution. The precast components are made in China and are delivered to Hong Kong by semi-submersible barge to be floated into position. We also employ the much quieter diamond-wire saw for cutting instead of traditional hydraulic breakers.
 
For the dual three-lane road tunnel, we place about 450 diaphragm wall panels on either side up to 55 metres below the sea level. This is one of the largest quantities of diaphragm wall used in a single project in Hong Kong. More than 3 million cubic metres of landfill, over 68,000 tonnes of steel reinforcement, over 400,000 cubic metres of concrete and more than 100,000 cubic metres of precast concrete are being used in the construction works.​​​

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