Nippon Steel’s Sheet Pile Cell Method Adopted in Hong Kong at 100,000T

Nippon Steel and Nippon Steel Trading announced on Wednesday Nippon Steel’s original “Sheet Piling Cell Construction Method” is adopted to the revetment structure of an artificial island project in Hong Kong. Nippon Steel and Nippon Steel Trading have promoted the sales expansion of the method. The method uses “Straight Web-type Sheet Piles” manufactured at Nippon Steel’s Yawata works in Fukuoka, Japan. The total consumption for the project is approximately 100,000 tonnes, which is the largest volume for a single project. The order receipt value is estimated at more than US$ 100 million.

Features of Nippon Steel’s “Straight Web-type Sheet Piles” are: manufacturable lengths of 38 meters, maximum interlock strength of 5,880 KN/m and maximum angle of deviation for an interlocking swing of 10.

“Sheet Piling Cell Construction Method” forms a cylindrical cell with about 30 meters of diameter by interlocking individual piles in cylindrical form, drives the cell into the required depth and fills the inside of the cell with earth and sand. The method requiring no foundation improvement was appreciated as an ecological method suitable for the execution zone.

An artificial island project in Hong Kong is involved in a larger project to construct a 40-kilometer access road between Hong Kong and Macao. The island circumference is 6.14 kilometers. The contractor is China Harbour Engineering Company (CHEC), a subsidiary for the overseas business ofa leading Chinese general contractor, China Communications Construction.

Total 134 cylindrical cells using 100,000 tonnes of steel sheet pile are adopted to the revetment structure. Nippon Steel and Nippon Steel Trading will supply the products to CHEC in a year starting in January 2012. The island construction is scheduled to complete in 2016.