Abstract：
Construction framers who cut and install steel studs as part of their daily tasks are exposed to hazardous noise levels during their work shift in large part due to the power saws they use to cut steel studs. This investigation characterized the sound pressure levels of power saws used to cut steel studs on active construction sites. Further, the length of time it took to cut various studs on a construction site was investigated to understand worker exposure times to saw noise. In general, power saws used on the study sites to cut steel studs had a mean A-weighted equivalent continuous sound pressure level (LAeq) of 107.2 dB and a C-weighted peak sound pressure level (LCpeak) of 120.1 dB. Three of the saws-the chopsaw, the cut-off saw, and the grinder-had similar noise levels, whereas the cordless circular saw had higher noise levels. It took an average of 13.2 s to cut each stud, and workers in the study used power saws to cut steel studs for an average of 371.5 s per day. This average exposure time at the average recorded sound pressure levels (SPLs) suggests these saws can increase the risk of occupational noise-induced hearing loss, according to National Institute for Occupational Safety and Health (NIOSH) recommendations.
摘要：
作为日常工作的一部分切割和安装钢钉的建筑工人在工作班次期间暴露于危险的噪音水平，这在很大程度上是由于他们用来切割钢钉的电锯。这项研究表征了用于在活跃建筑工地上切割钢钉的电锯的声压级。Further,调查了在建筑工地上切割各种螺柱所需的时间，以了解工人暴露于锯片噪音的时间。总的来说,在研究地点用于切割钢钉的电锯的平均A加权等效连续声压级（LAeq）为107.2dB，C加权峰值声压级（LCpeak）为120.1dB。三个锯-电锯，切断锯,和研磨机有相似的噪音水平，而无绳圆锯的噪音水平较高。切割每个螺柱平均需要13.2秒，研究中的工人使用电锯平均每天切割钢钉371.5s。在记录的平均声压级（SPL）下的平均暴露时间表明，这些锯会增加职业性噪声引起的听力损失的风险，根据国家职业安全与健康研究所（NIOSH）的建议。
