Project background
Temple was appointed to undertake a detailed plant noise assessment at the proposed temporary office within the Maria Fidelis Site in Euston on behalf of Mace Dragados Joint Venture (MDJV).
The purpose of the assessment was to determine the noise impact on nearby noise-sensitive receptors and, where required, provide advice on mitigation measures for further noise attenuation to comply with Camden Council requirements.
What was the challenge?
Located in Euston, the Proposed Development is near other buildings, the majority of which are noise-sensitive residential dwellings that could be impacted by the exposed rooftop plant.
As part of the proposed development, a large selection of noise-generating mechanical plants is required, including eight large air handling units, up to eleven condensers/air source heat pumps, and an industrial kitchen extract system. All plant is proposed to operate at maximum capacity 24/7 and require a large amount of free area to ensure airflow requirements are met; as a result, a pragmatic approach to mitigation design was required.
What was our solution?
Detailed noise calculations were undertaken taking into account the directionality of grille openings on the air handling units, enabling predictions that considered the plant orientation and ultimately how this affected surrounding buildings.
What was the conclusion?
A 3D noise model of the Proposed Development and surrounding area was generated in CadnaA and ‘variants’ were set up to quickly assess different scenarios. Analysis of detailed results from each piece of plant at every receptor allowed for easy identification of the plant items driving the assessment so that specific targeted mitigation options could be considered.
Using these methods, Temple was able to provide preliminary mitigation requirements to the client for different noise reduction strategies so that they could explore cost and suitability before finalising their choice.
The finalised noise mitigation measures included a combination of acoustic screening and localised duct attenuation for some air handling unit exhausts, for which Temple was able to provide details on the required specifications to eliminate any impacts and comply with Camden Council criteria.
