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Crossrail C510 Whitechapel and Liverpool Street Station Tunnels

This project is the 2018 Association of Noise Consultants ( ANC ) Award Winner in the Environmental Noise Category. Southdowns was appointed as the noise and vibration specialists by the Balfour Beatty BeMO Alpine Morgan Sindall Vinci Joint Venture ( BBMV JV) in 2011 to manage the contractor’s requirements with respect to noise and vibration. The C510 contract is widely regarded by the project as one of the more complex tunnelling packages due in part to the close proximity of residential and non-residential noise and vibration sensitive receptors to the main tunnel support worksites. The total value of the contract...

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Crossrail - C610 Systemwide Track and Fit Out

Southdowns is the lead noise and vibration specialist for the design and build contractor (Alstom TSO Costain JV,) with responsibilities that include the final detailed design sign-off of the proposed Standard Track Systems for the tunnelled sections of the alignment under central London. The track has been designed to achieve prescriptive groundborne noise and vibration requirements in overlying buildings and includes several generic trackform types including: resilient baseplates; bi-block and monobloc booted sleeper systems; and two variants of floating track slab in sensitive locations. Other design related elements include: the optimisation of fixed nose switch and crossing units to minimise...

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St George’s Park Retirement Village, Ditching Common, West Sussex

Sound Insulation Design and Testing. This major complex comprised the construction and development of 74 new retirement flats, along with a range of on-site facilities including restaurant, bar, gym and retail. Southdowns’ was appointed by the main contractor prior to commencement of works to provide detailed acoustic design advice to ensure that the acoustic performance of the separating walls, floors, lifts and other amenity areas of the building achieved the guideline values and principles of Approved Document E. Subsequent testing of floors and walls was also undertaken on sample floors and walls, following completion of the building works....