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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....

Vibration propagation monitoring

Glaxo Smith Kline - Dust Monitoring

Southdowns was commissioned by PM Group to undertake continuous unattended noise, vibration and dust monitoring during the construction of a new Augmentin Bulk Sterile facility at GlaxoSmithKline’s pharmaceutical manufacturing premise in Worthing, West Sussex. The new facility will be used to produce the Augmentin antibiotic medicine. The construction of the facility is being built over a c. 24 month construction programme, with the Augmentin Bulk Sterile facility becoming operational by 2017. The unattended environmental monitoring was established to monitor PM Group’s construction noise emissions during ground preparation, excavation, ground compaction and piling activities. The unattended noise monitoring units were established...