New sea lock - what's happening in March and April?

News item
02-03-2020
Bouw nieuwe zeesluis maart april 2020

In March and April, OpenIJ is going to asphalt part of the future public road near the guard wall and the dividing wall (number 1 in the picture). Also in March and April, the builders will complete the last section of the southern lock chamber wall (number 2 in the picture). OpenIJ is also working on the kistdam (a cofferdam) (number 3 in the picture). And they will also be busy with concrete pouring of layer no. 7 - the final layer of concrete - for the walls of the lock gate chamber of the inner head (number 4 in the picture).

Guard wall and Dividing wall

In March and April, OpenIJ is going to asphalt part of the future public road (the Middensluisweg) near the guard wall and the dividing wall (number 1 in the picture). Before the start of the asphalting operations, OpenIJ will be busy with the construction of the foundation for the road and the installation of the water drainage system, including cables and pipes.

Lock chamber wall south

Also in March and April, the builders will complete the last section of the southern lock chamber wall. After installation of reinforcement steel and the concrete formwork for this section, concrete pouring operations will begin. Anchors will be installed as soon as the concrete has hardened. These anchors, consisting of large steel rods, will firmly anchor the lock chamber wall into the subsoil. Once these operations have been completed, OpenIJ will add another layer of concrete to bring the lock chamber walls to the required height. The next step will be the installation of the cover slabs and the bollards.

Kistdam

The kistdam (number 3 in the picture) is situated near the east side of the Noordersluis. OpenIJ will be using a so-called droogzetkist (removable, temporary cofferdam) to enable concrete pouring operations here.  This removable, temporary cofferdam provides a dry working space for the installation of reinforcement steel and concreting operations for the wall of the kistdam. The temporary cofferdam is 45.5 metres long, 1.8 metres wide and 6 metres high.

Inner lock head

In the coming months, the final layer of concrete - layer no. 7 - for the walls of the lock gate chamber of the inner head (number 4 in the picture) will be poured. This layer will be approximately four metres in height all around. Before the concreting operations can start, the builders will be busy with the installation of reinforcement steel and the construction of formwork.