Noise Modelling
At NWSS we use the computer based environmental modelling software Cadna A to generate noise maps which can map the propagation of multiple noise sources (e.g. road, rail and industrial processes) simultaneously to provide an accurate representation throughout a site. With appropriate site information and drawings accurate 3D models can be generated.
Modelling for residential planning
Generating a model for a proposed residential development site under PPG24 can be used to assess the site into the different Noise Exposure Categories (NECs), which describe the likelihood of gaining planning permission. For larger sites there may be areas which fall into differing NECs.
Modelling industrial noise
Noise models can be used to estimate the likely noise impact of new plant before installation based upon manufacturers' acoustic data. Furthermore in the case that proposed plant does not comply with local authority's requirements the model can be used as a tool to select an appropriate alternative unit, control measures at source such as enclosures and mitigation measures such as fencing and bunds. The model provides a comparatively quick and low cost option to assess a variety of solutions.
