image credit: flickr

Seattle Google campus crane topples, kills 4

The companies involved are general contractor GLY Construction, based in Bellevue, Washington; crane subcontractors Northwest Tower Crane Service and Omega Morgan; and tower crane owner Morrow Equipment.

An expert speaking to The Times compared the Seattle crane accident to a similar incident in the Dallas area in 2012, the cause of which was determined to be the simultaneous removal and detorquing of bolts from multiple, vertical tower crane sections, which left the mast without adequate support when it was subjected to wind gusts. There has been no indication thus far that this was the cause of the Seattle incident.

Read More on Construction Dive