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ASME A120.1-2021
Safety Requirements for Powered Platforms and Traveling Ladders and Gantries for Building Maintenance
This Standard establishes safety requirements for powered platforms (scaffolds) for buildings where window cleaning and related services are accomplished by means of suspended equipment at heights in excess of 35 ft (11 m) above a safe surface (e.g., grade, street, floor, or roof level).
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American Society of Mechanical Engineers [asme]