BS5228 Updated, with Help from Hepworth Acoustics.

The final report on a significant project which has been on-going since 2004 is now available. In 2004, Hepworth Acoustics was appointed by Defra to provide a fully up-to-date database of the noise produced by construction-type plant. The first part of the database was published in 2005. Now the final phase, relating to plant used in quarries, has been published.

CAT-789BNoise data for construction-type plant used on construction and open sites has until recently relied on data that was either gathered in the 1970s or is provided by equipment manufacturers. In 2004 Defra commissioned Hepworth Acoustics to produce a database of noise emissions that was based on actual measurements from the plant in use. The first part of the database, relating to construction, demolition, opencast coal sites and waste disposal sites was published in 2005.

The final phase of the project encompasses quarries.

The central objective of the Construction Plant Noise Database is to provide accurate source data to enable operators of open sites, quarries and landfill operations to evaluate the potential impact of noise from the proposed operations. The noise data is suitable for use with BS 5228 but reflects current practice and plant. To complete Phase 3, Hepworth Acoustics carried out surveys of quarries in Cheshire, Derbyshire and North Wales. Approximately 300 individual measurements of plant noise were taken and the results are presented as un-weighted octave band sound pressure levels together with A-weighted activity sound pressure levels.

"The value of the study lies in the fact that where it is not practical to measure noise levels from the exact type of plant being used, this database can provide greater accuracy than relying on 'type test' noise emission data from manufacturers," explains Peter Hepworth of Hepworth Acoustics. "It helps operators to evaluate the potential noise impact of their sites with more accurate data, thus enabling them to take appropriate steps to mitigate the impact and assisting their use of BS 5228."