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Document ID (ISN)101012
CIS number 03-407
Year 2001
Convention or series no.
Author(s) Alves Maia P.
Ministério do Trabalho e Emprego
Title Noise in civil engineering work and the risk of work-induced deafness
Original title O ruído nas obras da construção civil e o risco de surdez ocupacional [in Portuguese]
Bibliographic information Fundacentro, Rua Capote Valente 710, São Paulo, SP 05409-002, Brazil, 2001. 144p. Illus. 85 ref. Price: BRL 15.00.
Abstract This thesis analyses the risk of hearing loss caused by noise among various categories civil engineering workers (labourers, masons, metalworkers and concrete formwork workers) exposed to noise levels of 82dB(A). The spectrum of noise emissions of machinery used in civil engineering as well as the noise levels to which the workers are exposed in the course of their different tasks were determined. Audiometric measurements were made among workers of 49 civil engineering contractors to evaluate hearing loss across the different job categories. Audiograms were corrected for age according to the ISO 7902 standard. They were also compared to the expected audiograms according to the ISO 1999 standard, which takes account of tenure and hours of work per day. Among the categories studied, only formwork workers were at significant risk of hearing loss.
Descriptors (primary) noise; risk factors; hearing loss; concrete work
Descriptors (secondary) Brazil; thesis; audiometric tests; glossary; noise level measurement
Document type E - Books, reports, proceedings
Country / State or ProvinceBrazil
Subject(s) Construction industry
Broad subject area(s) Physical hazards
Browse category(ies) Noise
Diseases of the ear and hearing damage