ISO11691
The measurement of sound power levels of noise sources connected to building machinery and construction equipment is the main focus of ISO 11691. Guidelines for evaluating the noise emissions of different kinds of equipment used in construction and related activities are provided by this standard.
Use of ISO11691:
Acoustic Performance Evaluation: This method is used by engineers, manufacturers, and regulatory agencies to assess the noise emissions of construction equipment by measuring its sound power levels.
Regulatory Compliance: Helps reduce environmental noise pollution by ensuring that construction equipment complies with national and international noise regulations.
Product Development and Certification: Offers a standardized procedure for evaluating and approving construction equipment’s acoustic performance to make sure it satisfies predetermined noise standards.
Method of ISO11691:
Test Configuration:
Usually, measurements are carried out in situ or in a controlled laboratory setting with precise operating parameters that mimic actual use.
To guarantee precise measurements of noise emissions, the equipment is positioned in accordance with regulations.
Method of Measurement:
Sound Measurement: During operation, the sound pressure levels surrounding the noise source are recorded using a variety of microphones.
Data collection: During a predetermined time period, sound levels are recorded while the machinery runs normally (e.g., idling, working).
Monitoring of Background Noise: To make sure that background noise levels don’t affect the measurement results, they are tracked.
Analyzing Data:
The recorded sound pressure levels, which are usually given in decibels (dB), are used to compute the sound power level.
Frequency analysis may be included in the results to evaluate how noise emissions differ at various frequencies.
In order to support adherence to noise regulations, accurately evaluate the noise emissions of construction equipment, and aid in the development of more efficient and quieter machinery for the construction sector, ISO 11691 is crucial.