Companies, consultants, and contractors must be aware that they are directly responsible for the construction noise – for people’s quality of life lies in their willingness to introduce a low-noise purchasing policy for their machinery equipment. While it is not easy to minimise the noisy activities on construction sites as jackhammers, tamping machines, and engine generators are indispensable machines needed to carry out the project – it is best to control at the source of the noise. A decibel scale is a logarithmic scale and works differently than a ruler (which is a linear scale). The Threshold of Hearing and the Decibel Scale Humans are equipped with very sensitive ears capable of detecting sound waves of extremely low intensity. If one machine emits a sound level of 90 dB, and a second identical machine is placed beside the first, the combined sound level is 93 dB, not 180 dB. There is another advantage in using the decibel scale. To understand the concept of deciBels, you must know these two things. They cannot be added or subtracted in the usual arithmetical way. Sound pressure levels are also measured on a logarithmic scale but the unit is the decibel re 2 × 10 5 Fa. Like any other noise pollutions, noises caused by construction sites has always been in attention locally, especially with conventional machinery equipment constantly producing loud noises, causing adverse reactions from people living within the site's proximity. Sound pressure levels in decibels (dB) or A-weighted decibels dB(A) are based on a logarithmic scale (see Appendix A). The decibel scale is logarithmic because thats essentially how our ears respond. Life can become a downward spiral when dealing with hearing issues, stress and declined productivity due to fatigue. A decibel value is based on the logarithm of the intensity of a sound. This can lead to many implications and gradually reduce your ability to understand speech in noisy places. Loudness is measured on a logarithmic scale. As decibel rises, your hearing is more likely to be damaged and more quickly than you might expect. As explained, even a small increase in decibel level can significantly impact your hearing health.
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