Accident Report Detail

Accident Summary Nr: 202447413 - Employee injured when crushed by collapsing concrete wall

Accident Summary Nr: 202447413 -- Report ID: 0950633 -- Event Date: 08/09/2007
Inspection Nr	Date Opened	SIC	NAICS	Establishment Name
310599873	08/10/2007	1622	237990	Washington Group International Obayashi Corporatio

Abstract: At approximately 7:15 a.m. on August 9, 2007, Employee #1 and a coworker were stripping the interior form work of a 15 ft long by 8 ft deep by 3 ft wide by 8 in. thick, type G-2 drainage inlet structure. They were doing this while the cement slurry backfill was being poured between the excavation wall and the north wall of the inlet structure. Two trucks, each carrying 10 cubic yards of the slurry, had already poured in their contents. When the third truck pour was in progress, the north wall developed vertical cracks and pushed toward the south wall of the inlet structure, crushing Employee #1 against the south wall. He sustained numerous bodily injuries. The coworker was able to climb out safely.

Keywords: CONCRETE FORM WORK, EXCAVATION, WALL, CONCRETE TRUCK, UNSECURED, PINNED, WORK RULES, CONSTRUCTION, VIBRATIONS, CRUSHED

Accident Details
End Use		Project Type		Project Cost	Stories	Non-building Height	Fatality
Highway, road, street		New project or new addition		$50,000 to $250,000

Employee Details
Employee #	Inspection Nr	Age	Sex	Degree of Injury	Nature of Injury	Occupation	Construction
1	310599873			Hospitalized injury	Fracture	Brickmasons and stonemasons apprentices	Distance of Fall: feet Worker Height Above Ground/Floor: feet Cause: Backfilling and compacting Fatality Cause: Collapse of structure

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