22 Category 1: Buildings 1 Collège Alpin International Beau Soleil - Villars-sur-Ollon, Switzerland Owner Leosolis Architect ABA Partenaires SA General Contractor Losinger Marazzi SA Engineering Office Alberti Ingénieurs SA Construction Period 2016 - 2017 The background of the wonderful scenery of the Alps indicates the complexity of the extension and transformation of the “Collège Alpin International”. Surrounded by the existing school and the main road to the city at 1,250 metres above the sea level, the project is difficult to reach and had to be delivered within an exceptionally short time. The gross floor area of the project is about 9,000 m2. The project is composed of two chalets, a gymnasium, eleven classrooms, six laboratories, a boarding school, a cafeteria and meeting rooms. Backed by the mountain, the challenge was to support the road by an anchored pile retaining wall of 14 m height and 120 m long during the construction stage. In the long term, the new building is designed to totally support the earth’s pressure. Post-tensioned concrete beams with large openings as well as post-tensioned concrete slabs have been used to support the two chalets above the gymnasium. The complexity of the project, the construction stages and the soilstructure interaction are the reasons why the structure has been completely investigated and calculated in SCIA Engineer. Alberti Ingénieurs SA Contact Benjamin Moroni Address Avenue Eugène-Rambert 1 1005 Lausanne, Switzerland Website www.alberti-ing.ch The engineering office was founded in 1959 by Justin and Jacques Alberti. Patrick Alberti joined the family company in 1987 and currently managed it since 2003. The company has been ISO 9001 certified since 2000. The Alberti Ingénieurs SA team (composed by engineers, technicians, draftsmen, accountants and secretaries) has shown for decades its ability to realise any type of construction projects from the simple to the most complicated, continuously listening to their clients, searching for efficiency and rationality while respecting sustainability criteria.
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