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How high does a scaffold have to be to require. Yoyo

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Employees on a scaffold more than 10 feet (3\.1 m) above a lower level must be protected from falling to that lower level. This can be achieved through personal fall arrest systems or guardrail systems. [1]

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Sources used for this answer

[1] Construction Safety and Health Standards (MIOSHA)

Page 32

Open source document

Source excerpt

# 1926.451 - GENERAL REQUIREMENTS (cont.) ## 1926.451(f) "Use." (cont.) - 1926.451(f)(15) Ladders shall not be used on scaffolds to increase the working level height of employees, except on large area scaffolds where employers have satisfied the following criteria: - 1926.451(f)(15)(i) When the ladder is placed against a structure which is not a part of the scaffold, the scaffold shall be secured against the sideways thrust exerted by the ladder; - 1926.451(f)(15)( The platform units shall be secured to the scaffold to prevent their movement; - 926.451(f)(15)(iii) The ladder legs shall be on the same platform or other means shall be provided to stabilize the ladder against unequal platform deflection, and 1926.451(f)(15)(iv) The ladder legs shall be secured to prevent them from slipping or being pushed off the platform. 1926.451(f)(16) Platforms shall not deflect more than 1/60 of the span when loaded. 1926.451(f)(17) To reduce the possibility of welding current arcing through the suspension wire rope when performing welding from suspended scaffolds, the following precautions shall be taken, as applicable: 1926.451(f)(17)(i) An insulated thimble shall be used to attach each suspension wire rope to its hanging support (such as cornice hook or outrigger). Excess suspension wire rope and any additional independent lines from grounding shall be insulated; - 1926.451(f)(17)(ii) The suspension wire rope shall be covered with insulating material extending at least 4 feet (1.2 m) above the hoist. If there is a tail line below the hoist, it shall be insulated to prevent contact with the platform. The portion of the tail line that hangs free below the scaffold shall be guided or retained, or both, so that it does not become grounded; - 1926.451(f)(17)(iii) Each hoist shall be covered with insulated protective covers; - 1926.451(f)(17)(iv) In addition to a work lead attachment required by the welding process, a grounding conductor shall be connected from the scaffo

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