• 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

 

Quieter Type Wire Saw or Diamond Wire Saw

Quieter Type Wire Saw or Diamond Wire Saw

Wire-sawing is a flexible sawing technique that can be applied under various situations with excellent cutting performance. It can be used to cut large area and remove heavily reinforced concrete, such as towers and bridge sections. It can also be used to cut concrete in a confined workspace or even inside an inhabited building without causing much disturbance. Quieter type wire sawing or diamond wire sawing operates very fast and only emits low level of noise.



Courtesy of Modern Concrete Drill Cut Co., Ltd.

Sound pressure level in dB(A) at 7m from equipment 76-81dB(A)