OSHA Accident Investigation · Summary #14459523
FOOTINGS,EXCAVATION,UNDERPINNING,COLLAPSE,RETAINING WALL
Event description
BEARING WALL FELL INTO ADJACENT EXCAVATION ONTO EMPLOYEES
Investigation abstract
ON 4-25-84, THREE EMPLOYEES WERE IN AN EXCAVATION, LEVELING OFF THE BOTTOM WITH WIDE WITH A 2'3" ARCH AND WAS 8' 10" HIGH AND 18 INCHES THICK. WALL AND ARCH WAS HELD ONLY AT THE ARCH AND TWO INCHES OF BASE ON A ONE INCH CONCRETE PAD. THE WA LL AND ARCH FELL INTO THE EXCAVATION ONTO THE THREE EMPLOYEES. SHOVELS. THIS WAS FOR THE PURPOSE OF POURING FOOTERS FOR THE WALLS OF AN ELEVATO R SHAFT. ON 4-24-84 THE EMPLOYEES DUG BELOW THE BASE OF THE FOOTERS ON AN ADJACE NT RETAINING WALL AND ALSO UNDERMINED THE BEARING WALL 16 INCHES. ON 4-24-84 THE Y ALSO REMOVED THE FOOTERS UNDER THE RETAINING WALL, EXCEPT AT THE NORTH AND SOU TH ENDS OF THE EXCAVATION. THERE WAS ONE FOOT OF FOOTERS LEFT AT THE SOUTH END. THERE WAS NO ATTEMPT TO MAKE THE EXCAVATION SAFE AT THE RETAINING WALL AND THE W ALL WAS NOT UNDERPINNED. THERE WAS 16 INCHES OF THE WALL OVER THE EXCAVATION AND 2 INCHES OF THE WALL WAS RESTING ON 1 INCH OF CONCRETE BASE. THE WALL WAS 4'4"
Victims (3)
-
#1 Fatality Age 22 M
- Nature of injury
- 6
- Part of body
- 4
- Event type
- 1
- Source
- 8
- Occupation code
- 599
- Human factor
- 4
- Environmental factor
- 6
- Task assigned
- 1
-
#2 Hospitalized Age 20 M
- Nature of injury
- 3
- Part of body
- 13
- Event type
- 1
- Source
- 8
- Occupation code
- 599
- Human factor
- 4
- Environmental factor
- 6
- Task assigned
- 1
-
#3 Non-hospitalized injury Age 42 M
- Nature of injury
- 3
- Part of body
- 13
- Event type
- 1
- Source
- 8
- Occupation code
- 554
- Human factor
- 4
- 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.