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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...

Noise and vibration specialists

Bond Street Station Upgrade - London Underground

In 2010, Costain/Laing O’Rourke (CoLOR) appointed Southdowns as the noise and vibration specialists for the Bond Street Station Upgrade ( BSSU ) project. The BSSU project incorporates the construction of a new station entrance, new escalator hall, the construction of lifts to enable step free access to station platforms, a link to the newly constructed Crossrail station and the improvement of connections between London Underground (LU) lines. The surface area of site is located on Oxford Street, opposite the current entrance to Bond Street Station. The compound is enclosed amongst receptors that are sensitive to noise and vibration inducing works....

Noise emissions monitoring services

Rudge Hill Farm - Photovoltaic Solar Energy Generation System for Renewable Energy

Noise emissions generated by the operation of a photovoltaic solar farm were investigated as part of a noise complaint investigation. The solar farm has a generation capacity of approximately 1 megawatt (MW) that provides power to approximately 250 dwellings, reducing carbon dioxide emissions by 420,000 kg per annum. An attended noise survey was undertaken on and in the vicinity of the solar farm, which included narrowband Fast Fourier Transform noise measurements in proximity to the solar farm’s inverters and HV transformer plant and the measurement of narrowband frequency and broadband A-weighted L max , L eq,T and L 90,T noise...