Concrete core in wooden shell

24.06.2019

In large construction projects, builders often first pour concrete for the staircase core. Carpenters then assemble the prefabricated timber components. Timbatec has reversed this sequence for the Lokstadt development in Winterthur: The wooden structure is erected, and then the liquid concrete is poured. This saves time and money.

Concrete core in wooden shell

The The stairwell cores serve as static stiffeners for the buildings and ensure the escape escape routes in case of fire. They are often erected when not much not much is visible on the construction site except for the basement. Later, the carpenters the carpenters arrive with the prefabricated timber construction elements and fit them to the concrete stairway cores. This was not the case with the Krokodil building in the Winterthur: Here, the timber structure was erected first and later served as formwork for the concrete. formwork for the concrete. The reversal of the work steps is the logical consequence of today's working methods. The timber builders work with smaller tolerances than the concrete builders. The wooden elements prefabricated in the factory are manufactured to an millimeter. This accuracy is not possible when concreting on the construction site. possible.

Time and material saved
The innovative process was developed by Timbatec for the Crocodile. It is efficient and resource-saving at the same time. Steel profiles and screws can be be used more sparingly: During the construction of the crocodile, thanks to the process, it is possible to dispense with 24 tons of steel, five thousand heavy-duty anchors and over ten thousand bolts. screws can be dispensed with.

The Lokstadt development in Winterthur is an Implenia Switzerland project. Information on this exciting major project can be found on the website www.lokstadt.ch.

For more information on the Krokodil house and Timbatec's services in this project, click here:Link to reference sheet.

The three-layer panels are both the visible wall on the inside of the room and the formwork for the concrete staircase core.

The three-layer panels are at the same time the interior wall on the inside of the room and the formwork for the concrete staircase core. Unlike the the three-layer slabs do not have to be removed once the concrete has dried out. no longer need to be removed once the concrete has dried.

View of the staircase core with the concrete formwork on one side and the three-layer slab on the other.

View into the staircase core with the concrete formwork on one side and the three-layer slab on the other side.

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