BF5, Parkkvarteret in Ballerup
CC3-CLASSIFIED CONSTRUCTION CAN BE BUILT WITH LIGHTWEIGHT CONCRETE
A new construction project is in the pipeline at Building Plot 5 (BF5) in the new Parkkvarteret development in Ballerup. The project comprises 129 homes to be built across 5 and 7 storeys with a partial basement. Ingcon A/S is managing the project, with FB Gruppen as the client. The construction is noteworthy due to the widespread use of lightweight concrete, despite the building being in consequence class 3 (CC3).
— As the buildings are CC3, more stringent requirements are placed on robustness and force transfer in the walls than in lower-rise construction. It is therefore rare to be able to use as much lightweight concrete as is the case with this project, says Anders Bidstrup, Managing Director of Ingcon A/S.
A GROUNDBREAKING INNOVATION
The basement and ground floor are being constructed in concrete, whilst the remainder of the building consists primarily of lightweight concrete. Both the concrete elements and the lightweight concrete elements are being designed as low carbon concrete elements (LCC elements) from BETONELEMENT. It is possible to build so much in lightweight concrete elements because BETONELEMENT has developed new stirrups for lightweight concrete, which are used to secure the stabilising walls and thereby ensure the robustness of the building. Anders Bidstrup explains:
— When you classify a building as CC3, it is the entire building section that is upclassified. This means that all walls from the ground floor to the top floor would normally be constructed in concrete walls. But BETONELEMENT has now found a method for making the joints, so that we can retain a greater proportion in lightweight concrete.
A CHANGED PROCESS PROMOTES INNOVATIVE THINKING
The design process for the construction has been different from that of traditional projects, as Ingcon, FB Gruppen and the parties involved started early in the process by looking at where the CO₂ footprint can be reduced.
— That is the great thing about the new process with early involvement of the concrete element supplier. We are now investigating how we can exploit and extract every force from the elements. Previously, we would simply have said that it was CC3, so concrete would primarily have to be used, says Anders Bidstrup.
— But now we break everything down in the calculator and include more elements in the calculations. In this way, we get the entire building to work together within the applicable regulations. It is a more refined and detail-oriented design process, he concludes.
The main design has been completed, excavation for the construction has begun, and Ingcon and FB Gruppen expect the first elements for the project to be delivered in autumn 2023.
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Client: FB Gruppen
Managing contractor: Ingcon
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