104,543Records 70,659Employers 84,666Hospitalizations 27,563Amputations 2015-01-01 2025-09-30
Safety Incidents OSHA Severe Injury Reports · 2015–2025

OSHA Accident Investigation · Summary #14510879

CONCRETE FORM WORK,UNSECURED,WORK RULES,JOIST,COLLAPSE,CONSTRUCTION

Event
CONCRETE FORM WORK,UNSECURED,WORK RULES,JOIST,COLLAPSE,CONSTRUCTION
Linked inspection
No inspection record linked to this accident's victims.
Summary number
14510879
Report ID
625400

Event description

Eight injured when floor collapses during construction

Investigation abstract

Employees #1 through #8 were working on the construction of an office building. The employer was pouring concrete on the third floor. As the concrete flowed fro m the pumper hose, it exerted lateral pressure on the floor-joist system. The jo ists bowed until they could no longer support the floor. The joists buckled and the floor collapsed, injuring Employees #1 through #8. The floor and forms were supported by bar joists with inadequate lateral support.

Victims (9)

  1. #1 Hospitalized Age 41 M

    Nature of injury
    3
    Part of body
    17
    Event type
    2
    Source
    8
    Occupation code
    999
    Human factor
    1
    Environmental factor
    2
    Task assigned
    1

  2. #2 Hospitalized Age 36 M

    Nature of injury
    3
    Part of body
    17
    Event type
    2
    Source
    8
    Occupation code
    999
    Human factor
    1
    Environmental factor
    2
    Task assigned
    1

  3. #3 Hospitalized Age 35 M

    Nature of injury
    12
    Part of body
    16
    Event type
    2
    Source
    8
    Occupation code
    999
    Human factor
    1
    Environmental factor
    2
    Task assigned
    1

  4. #4 Hospitalized Age 55 M

    Nature of injury
    12
    Part of body
    16
    Event type
    2
    Source
    8
    Occupation code
    999
    Human factor
    1
    Environmental factor
    2
    Task assigned
    1

  5. #5 Hospitalized Age 32 M

    Nature of injury
    3
    Part of body
    2
    Event type
    2
    Source
    8
    Occupation code
    999
    Human factor
    1
    Environmental factor
    2
    Task assigned
    1

  6. #6 Hospitalized Age 31 M

    Nature of injury
    3
    Part of body
    2
    Event type
    2
    Source
    8
    Occupation code
    999
    Human factor
    1
    Environmental factor
    2
    Task assigned
    1

  7. #7 Hospitalized Age 28 M

    Nature of injury
    3
    Part of body
    16
    Event type
    2
    Source
    8
    Occupation code
    999
    Human factor
    1
    Environmental factor
    2
    Task assigned
    1

  8. #8 Hospitalized Age 25 M

    Nature of injury
    3
    Part of body
    16
    Event type
    2
    Source
    8
    Occupation code
    999
    Human factor
    1
    Environmental factor
    2
    Task assigned
    1

  9. #981 Degree 0 Age 0

    Nature of injury
    0
    Part of body
    0
    Event type
    0
    Source
    0
    Occupation code
    0
    Human factor
    0
    Environmental factor
    0
    Task assigned
    0

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