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Vodafone Portugal transferred its new headquarter building to Rua do Polo Sul, Parque das Nações Zone (world exposition site – Expo98 Lisbon). The building comprises two blocks with a street running between them and car park access via a tunnel.
Structural noise was a problem in the offices located around the street and the car park entrance; especially below the street slab. Additional difficulty was caused by the sloping of the different floating slabs and the significant shear loads.
A Stravifloor Prefab floating floor system with a resonance frequency of 12-13Hz was installed across the whole of the street slab using conical pads in the sloping zones and rectangular pads in the straight zone.