OSHA Accident Investigation · Summary #14515894
SHORING,COLLAPSE,ERECTION PROCESS,UNSECURED,WORK RULES,BRACING,CONCRETE,CONTUSION,FRACTURE,CONSTRUCTION
Event description
Employee killed, eight injured when cement floor collapses
Investigation abstract
At approximately 11:30 a.m. on July 27, 1984, a cement floor was being poured on s sustained fractures, bruises, and cuts. Other employees were on the 3rd level doing concrete placement, concrete finishing, and related work. They sustained s prains, fractures, and bruises from falling with the floor or jumping from it. E mployees #2 through #8 were injured, and Employees #2 and #4 were hospitalized. The primary cause of the accident was an inadequate shoring system; other parts of the structural support system and its installation were also factors. the 3rd level of a building under construction. The floor was being poured with a pump and hose chute, and the concrete was being leveled with manual and mecha nical trowel vibrators. The floor's supporting structure was comprised of unsecu red wooden trusses and unbraced single-pole shores. When the poured floor collap sed in an apparent "blow-out," the pole shores fell in domino fashion and the en tire floor collapsed. Employee #1 and an unspecified number of other employees w ere on the 2nd level doing clean-up, inspection, and handling materials when the y were struck by the falling material. Employee #1 was killed and other employee
Victims (9)
-
#1 Fatality Age 33 F
- Nature of injury
- 2
- Part of body
- 5
- Event type
- 1
- Source
- 8
- Occupation code
- 999
- Human factor
- 17
- Environmental factor
- 4
- Task assigned
- 1
-
#2 Hospitalized Age 28 F
- Nature of injury
- 20
- Part of body
- 21
- Event type
- 1
- Source
- 8
- Occupation code
- 999
- Human factor
- 17
- Environmental factor
- 4
- Task assigned
- 1
-
#3 Non-hospitalized injury Age 35 M
- Nature of injury
- 3
- Part of body
- 20
- Event type
- 5
- Source
- 8
- Occupation code
- 999
- Human factor
- 17
- Environmental factor
- 6
- Task assigned
- 1
-
#4 Hospitalized Age 41 M
- Nature of injury
- 20
- Part of body
- 3
- Event type
- 5
- Source
- 8
- Occupation code
- 999
- Human factor
- 17
- Environmental factor
- 6
- Task assigned
- 1
-
#5 Non-hospitalized injury Age 47 M
- Nature of injury
- 7
- Part of body
- 2
- Event type
- 5
- Source
- 8
- Occupation code
- 999
- Human factor
- 17
- Environmental factor
- 6
- Task assigned
- 1
-
#6 Non-hospitalized injury Age 40 M
- Nature of injury
- 7
- Part of body
- 2
- Event type
- 5
- Source
- 8
- Occupation code
- 999
- Human factor
- 17
- Environmental factor
- 6
- Task assigned
- 1
-
#7 Non-hospitalized injury Age 31 M
- Nature of injury
- 12
- Part of body
- 11
- Event type
- 5
- Source
- 8
- Occupation code
- 999
- Human factor
- 17
- Environmental factor
- 6
- Task assigned
- 1
-
#8 Non-hospitalized injury Age 29 M
- Nature of injury
- 12
- Part of body
- 11
- Event type
- 5
- Source
- 8
- Occupation code
- 999
- Human factor
- 17
- Environmental factor
- 6
- Task assigned
- 1
-
#9 Non-hospitalized injury Age 27 M
- Nature of injury
- 3
- Part of body
- 15
- Event type
- 5
- Source
- 8
- Occupation code
- 999
- Human factor
- 17
- Environmental factor
- 6
- Task assigned
- 1
Codes shown verbatim from OSHA's accident-investigation database. A human-readable decoder is coming in a future release once the accident_lookup2 dictionary is loaded.