Ma Wan and Kap Shui Mun Channels Cable Crossings
CLP awarded a design and build contract in April 2000 to Skanska International Civil Engineering AB (main contractor), supported by A J Lucas (HDD subcontractor), ABB (cable supplier) and Atkins (design consultant). The tender design proposed six HDD drillholes 550mm in diameter. The Ma Wan crossings (2 Nos.) are each 1,300m long. The Kap Shui Mun crossings (4 Nos.) are each 850m long. Atkins was responsible for the design of all civil works for the project, including the design of the outer steel casings to resist both permanent and temporary loadings including pulling loads during installation. The design took into account the varying ground conditions along the route, including decomposed rock and potentially unstable fault zones.