Connecting element for sheet piles

In a connecting element for sheet piles, in particular for connecting sheet piles extending at an angle to each other, having a central web strip with an upper hook strip and a lower hook strip extending on the two longitudinal edges thereof, the hook strips pointing with their curvature in opposite directions and being adapted to engage corresponding hook strips of sheet piles to be connected the improvement wherein

• a) both hook strips have substantially the same construction and a continuous sickle-shaped curvature, the arcs of the curvature being greater than 180° and no more than about 250°;
• b) on the upper part of the central web strip is a projection which at the same time forms the beginning of the upper hook strip and whose direction is approximately perpendicular to the flat area of the web strip;
• c) the lower part of the web strip passes continuously into the lower hook strip;
• d) an imaginary prolongation in the direction of the extension of the end of the upper hook strip points away from the web strip and forms an acute angle of about 25° to 30° with a vertical direction parallel to the flat area of the central web strip;
• e) a center line through the opening and the interior space of the upper hook strip is inclined downward and forms an acute angle of about 45° with the prolongation of the flat area of the web strip;
• f) an imaginary prolongation in the direction of the extension of the end of the lower hook strip is directed toward the web strip;
• and
• g) a center line through the opening and the interior space of the lower hook strip forms an acute angle with the flat area of the web strip.