Table 1.
Full-shift average exposure levels by trade
| Trade | n measurements |
LAVG (dBA) |
LEQ (dBA) |
Peakiness of exposure (LMAX/LEQ) |
|||||
| Mean | SD | % >85 dBA | Mean | SD | % >85 dBA | Mean | SD | ||
| Construction workers | 1310 | 82.6 | 5.3 | 33.2 | 88.1 | 5.5 | 72.6 | 53.1 | 23.1 |
| Carpenter | 532 | 83.7 | 4.6 | 41.7 | 89.4 | 4.8 | 84.2 | 63.3 | 25.7 |
| Cement mason | 55 | 82.3 | 5.9 | 38.2 | 87.3 | 6.7 | 67.2 | 37.5 | 14.7 |
| Electrician | 303 | 80.4 | 5 | 16.8 | 86.2 | 5.4 | 56.8 | 47.5 | 14.1 |
| Insulation worker | 22 | 76.1 | 3.9 | 4.6 | 81.1 | 3.3 | 18.1 | 46.1 | 13.6 |
| Ironworker | 118 | 84.4 | 5.1 | 48.3 | 90.1 | 5.6 | 86.4 | 58.9 | 21.2 |
| Masonry worker | 86 | 82.4 | 7.1 | 33.7 | 87.9 | 7.4 | 62.8 | 46.4 | 19.8 |
| Operating engineer | 115 | 84.1 | 5.3 | 39.1 | 88.2 | 4.8 | 77.4 | 34.9 | 13.6 |
| Sheet metal worker | 79 | 80.5 | 4.2 | 11.4 | 85.9 | 4.9 | 57 | 49.3 | 21.1 |
| Controls | — | 70 | — | 0 | 70 | — | 0 | 1 | — |