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BAM releases report into car park collapse

The results have been released of an investigation into the cause of the partial collapse a multi-storey car park under construction in the Netherlands. The collapse happened at Eindhoven Airport on 27 May 2017.

The parking structure was constructed using BubbleDeck floors, which consist of precast concrete floor slabs and are equipped with weight-saving plastic bulbs. After installation on site, a concrete topping was applied.

The investigations show that the shear strength of the interface between the precast concrete floor slabs was insufficient. As a result, the structural capacity of the floor was compromised. The high ambient temperature on the day of the collapse was a contributing circumstance to the defect manifesting itself.

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