Noise exposure and hearing levels of workers in the sheet metal construction trade.
Am Ind Hyg Assoc J 1975 Aug; 36(8):626-632
Hearing and noise levels were measured at a job site involving sheet metal construction work and at a sheet metal fabrication shop. Noise levels up to 114 decibels A (slow response) were measured when various powered hand tools were used. Noise levels exceeded 85 decibels A between one-fourth and one-third of the time. Impact noise levels averaged about 120-125 decibels peak sound pressure level. Audiometric examinations showed that this group of construction workers had hearing losses, with the majority of the loss occurring in the 3 kilohertz to 6 kilohertz range. In addition the loss became more severe with increasing age. Temporary threshold shifts were observed both on the jobsite and in the shop after a single eight-hour exposure.
NIOSH-Publication; NIOSH-Grant; Reproductive-system-disorders; Acoustical-measurements; Noise-levels; Noise-control; Noise-sources; Hearing-disorders; Age-factors; Acoustic-trauma; Hearing-tests; Metalworking; Manual-equipment
Environmental Health Kettering Laboratory College of Medicine Cincinnati, Ohio 45219
American Industrial Hygiene Association Journal
University of Cincinnati, Cincinnati, Ohio