When you’ve got something big to install, possibly Asia’s largest ever precast unit, who do you go to for cranes? In the case of the Gammon/Leader joint venture, the contractor working on Civil Engineering and Development contract HK/2010/06 for the Central-Wanchai Bypass, it was to the Guangzhou Salvage Bureau of the Ministry of Transport to ask them to help out.
The bureau sent its Nan Tian Peng, a 500 tonne revolving construction barge, according to its website. Completed in 2005, the barge with a crew of 14 measures 72.64 metres long by 28 metres wide and has a gross tonnage of 3,466 tonnes. The lifting height of the crane is 92 metres.
According to Derek Zen Wei-peu, chairman and executive director of Build King Holdings, which owns Leader, the crane’s main job is not to lift the precast unit but to help in positioning the unit. To that end, the crane is used for installing anchors that will be used to guide the precast unit, which will be filled with water to increase its weight, into final position on top of 51 piles.
Planning for this operation was a headache as many factors had to come together at the right time from availability of the crane to the timing of low tides.
“It’s enough to kill somebody,” Zen said.
Construction Post took a look at the crane after it arrived in Hong Kong earlier this month.