Comparison of predictions from web-based construction noise tool with operator-attended field measurements

Abstract

Web-based noise prediction tools are increasingly being used to assist infrastructure projects in Australia with managing construction noise impacts. Typically, these noise tools use a pre-calculated set of noise predictions from a detailed 3-D computer noise model, with the web app providing an interface for the user to select (manually or automatically) the most appropriate reference source and adjusting the result to align with the desired sound power level. Verification noise monitoring is often prescribed as a management measure, particularly when the noise predictions exceed the nominated target at one or more noise-sensitive receivers. These noise measurements are then used to determine if corrective actions are necessary. An analysis of predicted levels generated using Gatewave and subsequent verification noise measurements has been conducted, with consideration given to key parameters such as plant/equipment and measurement locations and equipment sound power levels. Identification of key causes for deviations between predicted and measured levels is also discussed.