Final answer:
The required noise attenuation in a commercial laundry where actual noise level is 95 dB(A) and the standard is 88 dB(a) for eight hours can be calculated by subtracting the standard noise level from the actual noise level, which equals 7 dB(A). Each 3 dB(A) increase in noise level results in a doubling of the sound intensity, so the required noise attenuation would need to reduce the sound intensity by a factor of two, which corresponds to a difference of 6 dB(A) in sound intensity level. Measures such as using soundproofing materials, enclosing noisy equipment, or implementing engineering controls can be taken to achieve the required noise attenuation of 6 dB(A) in the commercial laundry.
Step-by-step explanation:
The required noise attenuation in a commercial laundry where the actual noise level is 95 dB(A) and the standard is 88 dB(A) for eight hours can be calculated by subtracting the standard noise level from the actual noise level. In this case, it would be 95 dB(A) - 88 dB(A), which equals 7 dB(A).
It is important to note that each 3 dB(A) increase in noise level results in a doubling of the sound intensity. Therefore, the required noise attenuation would need to reduce the sound intensity by a factor of two, which corresponds to a difference of 6 dB(A) in sound intensity level.
In order to achieve the required noise attenuation of 6 dB(A), measures such as using soundproofing materials, enclosing noisy equipment, or implementing engineering controls can be taken to reduce the noise level in the commercial laundry.