Design Steel Sheet Pile Cofferdam

Design method of single row cofferdam of steel sheet piles views.

Design steel sheet pile cofferdam.

The main purpose of a cofferdam is to exclude soil and or water to form a safely supported excavation where construction works can progress. A cofferdam is a substantially watertight enclosure consisting of steel sheet piling and structural bracing components which will permit substructure construction in waterways or other areas where the construction must be isolated from the surroundings. When construction must take place below the water level a cofferdam is built to give workers a dry work environment. 88 single row steel sheet piles cofferdam is usually composed of steel sheet piles retaining wall internal support or pull anchor and so on.

The latest eurocodes are based on a semi probabilistic approach. Between neighbors supports and at a defined depth to produce sufficient passive resistance. Sheet pile cofferdams are a specific form of a temporary works solution and as such is a cornerstone to the range of services offered by sheet piling uk ltd. A cofferdam is a retaining structure usually temporary which is utilized to keep water or earth out of an excavation site until the permanent works are constructed.

Such struc tures usually consist of vertical sheet piling walls forming a closed perimeter and braced internally or externally by a sys tem of structural members or ties. Subsection 704 steel sheet piling and cofferdams provide new or used continuous interlocking steel sheet piling including connections in corner pieces. Used sheeting must be in good conditions. Provide minimum nominal section modulus of at least 18 1 cubic inches per foot of wall when installed next to traffic or supporting traffic.

The sheet piles are then braced on the inside and the interior is dewatered. En 1997 part 1 ec 7 1 for the geotechnical design and en 1993 part 5 ec 3 5 for the steel sheet piles and bearing piles.