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Occupational Safety and Health Administration OSHA

Accident Report Detail

Accident: 202626594 - One Employee Is Killed, Another Is Injured In Wall Collapse

Accident: 202626594 -- Report ID: 0352410 -- Event Date: 07/29/2011
InspectionOpen DateSICEstablishment Name
31533253607/29/20111771L R Wilson & Sons Inc

On July 29, 2011, Employees #1 and #2 were assembling a steel structure on an already constructed precast concrete wall. The wall consisted of four sections, all stacked on top of each other. Each section was approximately 24-inches thick, measured 7.3-feet tall by 30.6-feet long, and weighed about 49,900 pounds. They were instructed to connect a concrete column on the western side of the precast concrete wall with a 43.75 foot long steel I-beam. While Employee #1 was located in an aerial lift adjacent to the precast concrete wall on the northern side of the concrete wall, Employee #2 was positioned on top of structural steel that was connected to the concrete column. After the I-beam was installed, Employee #1 lowered the aerial lift to the ground to gather more tools/equipment. Employee #2 straddled the I-beam and proceeded to the precast concrete wall. Once on the wall, Employee #2 connected his fall protection lanyard to the hoisting eyes of the concrete wall in preparation for installing a second connection between the wall and another column. The second column was located approximately 43.75 feet away from the wall in a northern direction. With the appropriate tools and equipment loaded, Employee #1 elevated the aerial lift to a position approximately 30 feet away from the wall in a northern direction. Within minutes of both Employee #1 and #2 being in position for connection of the wall to the column, the wall began to fall in a northern direction. The upper section of the wall contacted the aerial lift platform, pulling it to the ground and crushing Employee #1 beneath it. Employee #2 fell with the wall and upon impact with the ground was struck by the wall, severing the lower portion of one of his legs. Employee #2 was taken to a nearby medical facility, where he was hospitalized and treated for his injury; however, Employee #1 died as a result of his injuries.

Keywords: concrete form work, steel beam, amputated, collapse, construction, crushed, fall, struck by, aerial lift, leg
Accident Details
End Use Proj Type Proj Cost Stories NonBldgHt Fatality
Commercial building New project or new addition $5,000,000 to $20,000,000 1 30 X

Employee Details
Employee # Inspection Age Sex Degree Nature Occupation Construction
1 315332536 Fatality Other Construction laborers FallDist:
FallHt:
Cause: Erecting structural steel
FatCause: Collapse of structure
2 315332536 Hospitalized injury Amputation Construction laborers FallDist:
FallHt:
Cause: Erecting structural steel
FatCause: Collapse of structure

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