|Document ID (ISN)||68153|
|ISSN - Serial title
||0386-8761 - Journal of the INCE of Japan
|Convention or series no.
||Kitagawara T., Nishigaya T., Yamada M.
||Trends in noise control for construction machinery
||Kensetsu kikai no sōon taisaku gijutsu dōkō [in Japanese]|
||Aug. 1995, Vol.19, No.4, p.8-12. Illus. 3 ref.
||In Japan, the average level of noise produced by construction machines or operations has decreased by more than 20dB in the last 25 years. Diesel hammer pile drivers have been replaced by augers, resulting in a 30dB decrease. The use of hydraulic crushers instead of impact breakers in demolition work has resulted in a 20dB decrease. Design improvements in excavators, compressors and diesel-powered generators gave a 20dB reduction. These changes reflected the passage of noise control laws and the promotion of a "Designation system of low-noise machinery" by the Ministry of Construction. This rating system identifies construction machinery that meets noise standards for given applications. The Ministry has also encouraged the use of low-noise machinery in public works. Further improvements will require more than the reduction of engine noise and enclosure of noisy parts that were practiced in the past; low-noise designs will be found for some kinds of construction equipment that pose special problems.
||Japan; construction equipment; role of government; construction industry; noise control
||D - Periodical articles
|Country / State or Province||Japan|
||Noise, hearing and vibration
|Broad subject area(s)
||Construction industry and civil engineering