Kai Tak Development - Kai Tak Approach Channel & Kwun Tong Typhoon Shelter Improvement Works (Phase 1)

Concentric teamed up with Penta-Ocean and Alchmex to form a Joint Venture and secured the contract for the Kai Tak Approach Channel and Kwun Tong Typhoon Shelter Improvement Works (Phase 1).                

Key deliverables of the works included :                                                    

• Dredging and disposal of approx. 120,000m³ type 3 contaminated marine sediments at Kai Tak Approach Channel;
• Embankment improvement works to the associated waterways; and
• Demolition of existing disused dolphin connecting to the former airport runway in To Kwa Wan typhoon shelter.                            

The project team successfully designed a closed grab mounted on hydraulic excavator for dredging to alleviate pollution to the channel water during removal of contaminated sediments and an innovative geotextile containment capable to carry 300m³ sediments with venting ports to prevent bursting caused by impacts due to the free fall from the marine vessel to the sea bed.