McKenzie E A, Bobick Thomas G
Division of Safety Research, National Institute for Occupational Safety and Health Morgantown, WV.
Wood Des Focus. 2013 Mar;23(1):13-19.
In the construction industry, workers falling to a lower level has been the primary cause of fatalities according to the Bureau of Labor Statistics Census of Fatal Occupational Injuries database. From 2006 to 2010, an average of 353 construction workers died annually as a result of falling to a lower level. An average of 126 workers (36%) died when falling from unguarded roof edges, and through roof and floor holes or skylights. The National Institute for Occupational Safety and Health evaluated the strength of job-built guardrail structures around an opening. The study focused on a 2'×4' opening typical of residential skylights. Nine full-time residential carpenters built guardrails for strength testing.
根据美国劳工统计局《致命职业伤害普查》数据库，在建筑行业，工人坠落至较低高度一直是死亡的主要原因。2006年至2010年期间，平均每年有353名建筑工人因坠落至较低高度而死亡。平均有126名工人（36%）从无防护的屋顶边缘、穿过屋顶和地板的孔洞或天窗坠落时死亡。美国国家职业安全与健康研究所评估了开口周围现场搭建的护栏结构的强度。该研究聚焦于住宅天窗常见的2英尺×4英尺的开口。九名全职住宅木匠搭建了用于强度测试的护栏。
