Scaffolds and scaffold components must be capable of supporting, without failure, their own weight and at least 4 times their maximum intended load.įoreman Dies When Overloaded Scaffold Falls Counterweights must not be removed from an outrigger beam until the scaffold is disassembled.Counterweights must be secured by mechanical means to the outrigger beams (Figures 2 & 3) to prevent accidental displacement.Counterweights must not be made of flowable materials such as sand, gravel, and similar materials that can be easily dislocated.Masonry units, rolls of roofing felt, and other similar construction materials shall not be used as counterweights.Only items specifically designed as counterweights may be used to counterweight scaffold systems.Or a minimum of 1½ times the tipping moment imposed by the scaffold when it is operating at the stall load of the hoist, whichever is greater.At least 4 times the tipping moment imposed by the scaffold when it is operating at the rated load of the hoist.Counterweights used to balance adjustable suspension scaffolds must be capable of resisting :. Or bolts or other direct connections to the floor or deck.Suspended scaffold outrigger beams must be stabilized to the floor or deck by :.Suspension ropes must be shielded from heat-producing processes.Inadequate Counterweights Cause Two Deaths Suspension ropes supporting adjustable suspension scaffolds must be a diameter large enough to provide sufficient surface area for the functioning of brake and hoist mechanisms. Įmployers must replace wire rope when the following conditions exist: kinks six randomly broken wires in one rope lay or three broken wires in one strand in one lay one third of the original diameter of the outside wires is lost heat damage evidence that the secondary brake has engaged the rope and any other physical damage that impairs the function and strength of the rope. ĭrum hoists must contain no less than four wraps of the rope at the lowest point. The standard prohibits using repaired wire. Also see, OSHA Standards and Interpretation Letter: - Scaffolds: Lifelines, support lines, and suspension ropes cannot have a common anchor point. The suspension ropes must be long enough to allow the scaffold to be lowered to the level below without the rope passing through the hoist, or the end of the rope configured to prevent the end from passing through the hoist. Emergency escape and rescue devices must not be used as working platforms, unless designed to function as suspension scaffolds and emergency systems.When lanyards are connected to horizontal lifelines or structural members on single-point or two-point adjustable scaffolds, the scaffold must have additional independent support lines equal in number and strength to the suspension lines and have automatic locking devices.When using direct access, the surface must not be more than 24 inches (61 cm) above or 14 inches (36 cm) horizontally from the surface.When scaffold platforms are more than 24 inches (61 cm) above or below a point of access, ladders, ramps, walkways, or similar surfaces must be used.A competent person must inspect ropes for defects prior to each workshift and after every occurrence that could affect a rope's integrity.Guardrails, a personal fall-arrest system, or both must protect each employee more than 10 feet (3.1 m) above a lower level from falling.
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