Composition of retaining wallThe retaining wall consists of 28 sections: 15 upper chambers in the top part of the wall and 13 buoyancy chambers on the underside. The trusses are fastened to the wall in six places. Extra reinforcements have been introduced at these points, where the water pressure exerted on the entire wall surface has to be transmitted to the trusses.
The extremities of the retaining wall on the landward side consist of two upper chambers without lower buoyancy chambers. One of these chambers is designed to support the locomobile once the wall has been sunk. In these circumstances the other chamber will come to lie above the level of the New Waterway.