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Underwater & marine

North Point: removing old dolphins beside the Island Eastern Corridor

Old concrete dolphins on bored piles were lifted out by crane barge after divers cut each pile 500 mm below the seabed.

Year
2011
Location
North Point, Hong Kong Island
Status
Completed
Category
Underwater & marine

Old concrete dolphins stood on bored piles beside the Island Eastern Corridor at North Point, in a seabed at −4.0 to −5.2 mPD.

  1. Divers hand-dug around each pile.
  2. They cut the pile about 500 mm below the seabed, so nothing would be left standing proud.
  3. A crane barge lifted the dolphin cap and piles onto a flat-top barge.
  4. The dolphin was taken away and broken up.

The same drawings include a diver CCTV survey of drains at the Wan Chai waterfront, from Ø150 PVC to Ø2,100 mm concrete.

Drawings

Diver cutting a pile below the seabed · 潛水員在海床下切割樁柱
Diver cutting a pile below the seabed · 潛水員在海床下切割樁柱