Cal/OSHA has cited three contractors $147,315 for safety violations after investigating the collapse of a temporary mold (formwork) and vertical shoring at an Oakland construction site that sent 13 workers to the hospital.
On May 26, workers at 3039 Broadway, a 435-unit mixed-use project, were pouring concrete into elevated formwork when the shoring system supporting the formwork collapsed. The workers fell some 20 feet along with freshly poured concrete, reinforcing steel, timber framework, and tools and equipment.
Some were able to get to safety on their own and others were assisted by firefighters. When emergency crews arrived, workers were using shovels to dig their colleagues out of the wet concrete.
Oakland Fire Battalion Fire Chief Ian McWhorter, who was still cleaning wet cement off his boots almost four hours later, said earlier the on-site workers “did an excellent job of extricating” their fellow workers before firefighters arrived and took over.
McWhorter said the cement was “kind of like quicksand” and rescuers used plywood and planks to reach trapped workers so they would not sink.
The injured were taken to hospitals for cuts, bruises and strains, but no fatalities or major injuries were reported. One worker’s injuries required surgery.
Cal/OSHA Chief Juliann Sum said that “significant safety lapses caused injuries that could have been much worse if the workers hadn’t landed in freshly poured concrete. Employers must identify, evaluate and correct unsafe working conditions and follow all requirements to prevent employee injuries and illnesses.”
Cal/OSHA’s investigation found that the formwork and vertical shoring system that collapsed were not properly designed, installed or inspected. The agency issued serious and serious accident-related citations to subcontractors Largo Concrete, Inc. and N.M.N. Construction, Inc. for $73,365 and $70,320, respectively, for failure to ensure that the formwork and vertical shoring were designed to safely withstand all intended loads, failure to have calculations and drawings approved by a California registered civil engineer as required for vertical shoring over 14 feet tall, and failure to ensure the shoring supports were erected on a level and stable base. General citations were issued to general contractor Johnstone Moyer, Inc. for $3,630 in proposed penalties.
Cal/OSHA addresses safety requirements for concrete construction and vertical shoring in its Cal/OSHA Pocket Guide for the Construction Industry.