OSHA Accident Investigation · Summary #693762

SUBURBAN CONTRACTORS, INCORPORATED

WOODBRIDGE, VA· 1985-11-11T00:00:00

Event: LACERATION, COLLAPSE, FALL, CONCRETE FORM WORK, WORK RULES, EQUIPMENT FAILURE, INEXPERIENCE, SCAFFOLDING, CONSTRUCTION, SCAFFOLD COLLAPSE
NAICS: 000000
Inspection type: Accident-driven
Activity number: #3351335
Employer profile: SUBURBAN CONTRACTORS, INCORPORATED
Summary number: 693762
Report ID: 355114

Event description

Seven employees injured when concrete slab collapses

Investigation abstract

Employees #1 through #7 were working either in or right beside a reinforced conc rete slab that was being poured. This was the contractor's first attempt at usin g this type of concrete. The 9,375 sq. ft decking was being supported by a Hico beam system that was held up by tubular steel scaffolding resting on 2 by 10 in. mud sills. Something in the scaffolding system gave way and roughly one-third o f the 75 ft by 45 ft area that was being poured collapsed, causing Employees #2, #5, #4, and #7 to fall 17 ft 10 in. to the ground. Employees #1 through #3 and #5 through #7 were treated for minor cuts, bruises, and sprains and released. Em ployee #4 was admitted two days later to the hospital with a back injury.

Victims (8)

#1 Hospitalized Age 36 M

Nature of injury
12

Part of body
2

Event type
4

Source
8

Occupation code
599

Human factor
6

Environmental factor
13

Task assigned
1
#2 Hospitalized Age 26 M

Nature of injury
20

Part of body
11

Event type
5

Source
8

Occupation code
599

Human factor
6

Environmental factor
13

Task assigned
1
#3 Hospitalized Age 35 M

Nature of injury
3

Part of body
19

Event type
4

Source
8

Occupation code
599

Human factor
6

Environmental factor
13

Task assigned
1
#4 Hospitalized Age 29 M

Nature of injury
21

Part of body
3

Event type
5

Source
8

Occupation code
588

Human factor
6

Environmental factor
13

Task assigned
1
#5 Hospitalized Age 31 M

Nature of injury
7

Part of body
13

Event type
5

Source
8

Occupation code
588

Human factor
6

Environmental factor
13

Task assigned
1
#6 Hospitalized Age 29 M

Nature of injury
7

Part of body
15

Event type
4

Source
8

Occupation code
588

Human factor
6

Environmental factor
13

Task assigned
1
#7 Non-hospitalized injury Age 26 M

Nature of injury
3

Part of body
19

Event type
5

Source
8

Occupation code
588

Human factor
6

Environmental factor
13

Task assigned
1
#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

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.