• Renovation
    Renovation

Interior/ partial interior renovation works at the existing building would cause noise impact to the residents at neighbouring buildings or units. Concrete/ brickworks breaking and tiles/paint removal using handheld breakers are common noisy renovation works.  Sound power levels of traditional handheld breakers can generally reach 108 dB(A).  Use of some smaller mechanical equipment such as mini-breaker or innovative method such as high pressure water jet for tiles/ paint removal would generate less noise during renovation works.

Sound pressure level at 7 meters from equipment

 

Sound pressure levels of traditional and quieter equipment/ method for reference.

Noise reduction

 

Mitigation Measures

Noise enclosure for underground construction works

Use of acoustic enclosure for stationary plant can achieve a noise reduction up to 20dB(A) easily.

(Wilson Acoustic) Noise barrier

An effective way of reducing noise is to install a purpose-built barrier between the noisy equipment and the noise sensitive receiver.