Published: Apr 10, 2013 1:13 PM EDT

MIAMI (AP) - Federal safety regulators have penalized five contracting companies more than $38,000 combined for errors that caused last October's collapse of a college parking garage that killed four workers.
    
The Occupational Safety and Health Administration citations released Wednesday found evidence of missing welds and grout, failure to properly brace columns and failure to inspect the structure as required. OSHA also said contractors didn't follow project drawings.
    
The five-story, $20 million garage at Miami Dade College's west campus collapsed Oct. 10. The OSHA violations were labeled as serious, which under federal law translates to a maximum $7,000 penalty.
    
Families of the workers killed in the collapse have also filed lawsuits that could cost the contractors much more.
    
OSHA set an April 25 deadline for the problems to be fixed.

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