OSHA Accident Investigation · Summary #14235147
WINDOW WASHER,LIFELINE,OUTRIGGER,SCAFFOLD COLLAPSE,TWO PT SUSP SCAFFOLD,BOLTING,SCAFFOLD
Event description
SCAFFOLD FELL AS A RESULT OF AN IMPROPERLY SECURED OUTRIGGER
Investigation abstract
ON AUGUST 24, 1985, WHILE WINDOW WASHERS WERE WORKING 8 FLOORS UP, AN OUTRIGGER ). BEING USED WITH A 2-POINT SUSPENSION SCAFFOLD FELL. THIS PERMITTED THE WEST END OF THE HI-LO, 32 FOOT SCAFFOLD TO FALL. AT THE TIME, BOTH EMPLOYEES WERE TIED OF F TO LIFELINES AND NEITHER WERE INJURED. THE OUTRIGGER AND ROOF DAVITTS WERE FUR NISHED BY BUILDING MAINTENANCE OF THE BUILDING. THE BOLTS AND NUTS WERE FURNISHE D BY THE WINDOW CLEANING COMPANY (A WINDOW CLEANING CO., 1027 HAYMARKET ROAD, DA LLAS, TX). THE WINDOW WASHER WHO SET UP THE OUTRIGGER USED ONLY ONE BOLT. HE DID NOT PUT A NUT ON THE BOLT. THE BOLT BACKED OUT OF THE OUTRIGGER/ DAVITT HOLE AN D THE OUTRIGGER FELL (THE OUTRIGGER WAS CONSTRUCTED TO BE SECURED WITH TWO BOLTS