Operation of the Storm Surge Barrier

Ball-joint and foundation

The two ball-joints are designed to ensure that the gates can move in all directions, both horizontally (when the gates are floated out) and vertically (upon submersion). In addition the gates must be able to ride up and down with the waves upon opening and closing. The only type of hinge capable of accommodating all these movements is a ball-joint. The ball-joint, which may be compared to a hip or shoulder-joint, must also be capable of transmitting the enormous pressure of the water on the gates to the foundation.

1. Parts of the ball-joint
2. Design philosophy
3. Manufacture
4. Force