Case Studies...

New Build Residential and Commercial Building, Wandsworth, London

Hodgson & Hodgson Acoustic Consultancy Division has provided acoustic consultancy to Denne Construction on a new build project in Wandsworth - one of London's busiest boroughs. The four-storey residential and commercial building is located on Garratt Lane, in a bustling area for shopping and leisure.

Hodgson & Hodgson was commissioned during the infant stage of the project. An Environmental Noise Assessment was carried out in line with PPG24 and BS8233 to determine the Noise Exposure Category of the site and also to determine if the indoor ambient noise levels would meet the criteria set out by the Local Authority. Traffic flow along the busy Garratt Lane causes high external noise levels, which presented Hodgson & Hodgson with a considerable challenge: to provide a building envelope specification which ensured that the required indoor ambient noise levels were met.

H&H came up with a combination of specialised double and triple glazed units coupled with acoustic through-wall and mechanical ventilators along with standard brick-block cavity external walls. This was adequate to meet the set criteria without any further noise control schemes. Pre-Completion Testing showed the airborne and impact test results to be around 8dB better than the criteria set out in Approved Document E (2003) for Purpose-Built Dwellings.

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