ELS System with Df MA Skidding Mega Trusses

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ELS System with Df. MA Skidding Mega Trusses Introduction & Project Background - Central

ELS System with Df. MA Skidding Mega Trusses Introduction & Project Background - Central Kowloon Route Kai Tak West Kai Tak Works Area Ma Tau Kok Works Area • • Access Shaft (50 mx 30 m) 100 m long cut & cover tunnel • Stage 2 Stage 1 Kowloon Bay Marine Works Area • 370 m long underwater vehicular tunnel to be constructed • Skidding ELS System for both Stage 1 & 2 Marine Works 60 m long cut & cover tunnel 130 m long depressed road and 200 m long underpass 390 m long underground tunnel ventilation adit Contract No. HY/2014/07 Central Kowloon Route – Kai Tak West Scope of Works Construction of tunnels under the seabed of Kowloon Bay and at Ma Tau Kok, and depressed roads and underpass at Kai Tak Development Commencement Date Jan 2018 Completion Date Jan 2025 Contract Sum HK$ $6. 24 Billion Contractor Gammon Construction Limited Consultant Arup – Mott Mac. Donald Joint Venture

ELS System with Df. MA Skidding Mega Trusses Traditional: In-situ installation of ELS members

ELS System with Df. MA Skidding Mega Trusses Traditional: In-situ installation of ELS members Our Method: Off Site Fabrication, Modular Integrated Construction (Mi. C) Enhanced occupational safety, environmental & quality control at the prefabrication yard Maximize the size of the strut module (avg. 30 Ton per module, reduce on-site works) Improved efficiency on-site with less insitu fabrication/welding Marine Works Area Stage 1 Legend: Marine platform S 1/S 2 Truss Size of a Standard 11 -A side Football Field

ELS System with Df. MA Skidding Mega Trusses Traditional: - In-situ rigging & welding

ELS System with Df. MA Skidding Mega Trusses Traditional: - In-situ rigging & welding high risks works above water - In-situ welding of ELS members 3 Our Method: - On-site assembling at designated assembling area with tailor-made working platform (reduce working above water & working at height risks) - Huge module, reduce jointing on site - All bolt & nut connections, no hot works on site

ELS System with Df. MA Skidding Mega Trusses - Lift the assembled truss away

ELS System with Df. MA Skidding Mega Trusses - Lift the assembled truss away from support cradles and lower it to the rails by Strand Jack for subsequent skidding to final position 4 Erection of lifting tower & Strand Jack Skidding of trusses on rail by hydraulic rams