Founded 1954 | Parent organization Bouygues | |
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Vorspann System Losinger or VSL International is a worldwide Swiss-based construction company that develops post-tensioning systems for structural concrete, and is owned by the large French construction company Bouygues.
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History
The Swiss construction company Losinger founded Précontrainte SA in 1954 in French-speaking Lausanne, which made equipment for the prestressing of reinforced concrete.
Structure
It is headquartered in German-speaking Köniz in the Canton of Bern in Switzerland. It publishes its in-house magazine VSL News. In 2009, Daniel Rigout was appointed Chairman and Chief Executive, a former deputy chief executive of Bouygues Bâtiment International.
The company has 34 subsidiaries around the world, with around 3,900 employees, including around 900 engineers and technicians. It has two technical centres.
Products
It has recently provided much cable-tensioning equipment of cable-stayed bridges across the world.
It has provided concrete tensioning for
It provided heavy lifting (with hydraulic jacks) for
It designs and builds systems, known as the VSL System, to incrementally-launch bridges.