Demolition of building involves large amount of concrete breaking works. Traditional excavator mounted concrete breaker is one of the most popular equipment use for building demolition, and its sound power level can achieve about 122 dB(A). However, various quieter equipment for concrete breaking and demolition can also be found in the market.
Noise reduction for some mitigation meausres for reference.
The contact between the saw blade and the workpiece creates vibration during sawing which causes high noise generation. Quieter type blade saw, such as noise reducing diamond blade, with higher speed and smoother blade reduces the excitation of vibration and hence the propagation of sound.
Courtesy of Modern Concrete Drill Cut Co., Ltd.
Courtesy of Hilti(Hong Kong) Ltd.
| Sound pressure level in dB(A) at 7m from equipment | 76-81dB(A) |
