suspended scaffold rigging

asbestos beams bricks building city clamps cleaners construction crane danger dangerous dust dusty erect fall frame frames guardrail hanging harness hazard hazardous high hoist hoisting hook hooks inspection laborer lifelines lift line load mesh netting new nyc osha outrigger paint painter parapet pipe platform protection removal renovate renovations repair restoration rigging risk risky roof rope safe safety scaffold scaffolding secured shackle sheds sidewalk skyscraper steel supported suspend suspended tiebacks vacuum wall washer washers washing wire worker working