Text For Citation: 01 Item/Group: 001 Hazard: STRUCK BY

Section 5(a)(1) of the Occupational Safety and Health Act of 1970: The employer did not furnish employment and a place of employment which were free from recognized hazards that were causing or likely to cause death or serious physical harm to employees in that employees were exposed to the hazard of falling from, and being struck by, the metal plate connected wood roof trusses that were subject to movement due to the lack of proper temporary bracing: a. During the installation of metal plate connected wood roof trusses spanning 38 feet 8 inches, the sheathed gable end and ten trusses collapsed and injured three (3) employees on March 1, 2005. The following factors contributed to the collapse: 1. There were high winds on the site at the time of the collapse and the sheathed gable end acted like a sail and initiated the collapse due to inadequate ground to gable bracing, as specified in Steps 1 through 3 of BCSI B-2. 2. Bottom chord diagonal bracing was non-existent for the ten (10) trusses, as specified in Step 7 of BCSI B-2. 3. Web member diagonal bracing was non-existent for the ten (10) trusses, as specified in Step 6 of BCSI B-2. One feasible and acceptable method to correct these hazards is to install the roof trusses in accordance with the Truss Plate Institute's recommendations which are contained in BCSI B-1 and B-2 (Building Component Safety Information). The truss manufacturer provided a copy of B-1 when it delivered the trusses to the job site.