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Accident Report Detail

Accident: 202346938 - Three Employees Injured When Double Tee Collapses

Accident: 202346938 -- Report ID: 0352450 -- Event Date: 04/03/2003
InspectionOpen DateSICEstablishment Name
30629114704/03/20031791E. E. Marr Erectors, Inc.
On April 3, 2003, Employees #1, #2, and #3 were installing a 30-ton, 12 ft by 60 ft section of concrete double tee on the 3rd level of the parking garage. The d ouble tee was raised to the 3rd level of the parking garage by a crane and guide d into place by Employees #1, #2, and #3. The double tee was resting in the pock et in the wall panel on the north end and sitting on the two bearings on the sou th side of the litewall panel. The wall pockets and bearings were manufactured w ith slope of approximately 10 degrees. Employee #1 unhooked one cable from the n orth end of the double tee. The double tee began to slip from the bearings on th e litewall panel. As it slipped from the bearings, it also pulled out of the wal l panel pockets. As it began to fall, the wire ropes from the crane, which were still attached at the south end, caught the double tee. A section of the double, approximately 30 ft in length, broke from the double tee and fell to the 2nd le vel. The remainder of the double tee was still attached by shackles and wire rop e and hanging from the crane. The double tee on the 2nd level broke from the str ess of the 3rd level double tee section landing on it and fell to the ground. Em ployee #1 was on the double tee on the 3rd floor when it slipped off the bearing . He fell to the ground with the broken section and sustained abrasions, contusi ons, and three fractured vertebrae in his lower back. Employee #2, a superintend ent, was on the double tee on the 2nd floor. When it broke and collapsed, he fel l to the ground with it, sustaining abrasions and contusions. Employee # 3 was a ble to jump from the double tee on the 3rd level to another double tee, as it be gan to fall. He sustained a minor contusion to his leg. All employees were treat ed for the injuries sustained during the collapse and released from the hospital the same day.
Keywords: fracture, wall, wire rope, collapse, construction, back, bearing, vertebra, contusion, leg
End Use Proj Type Proj Cost Stories NonBldgHt Fatality
Other building New project or new addition $5,000,000 to $20,000,000 3 30
Employee # Inspection Age Sex Degree Nature Occupation Construction
1 306291147 Hospitalized injury Fracture Construction laborers FallDist:
FallHt:
Cause: Bituminous concrete placement
FatCause: Collapse of structure
2 306291147 Hospitalized injury Bruise/Contus/Abras Construction laborers FallDist:
FallHt:
Cause: Bituminous concrete placement
FatCause: Collapse of structure
3 306291147 Hospitalized injury Bruise/Contus/Abras Supervisors, material moving equipment operators FallDist:
FallHt:
Cause: Bituminous concrete placement
FatCause: Collapse of structure

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