ASME A120.1 pdf download Safety Requirements for Powered Platforms and Traveling Ladders and Gantries for Building Maintenance 1.3 Application of This Standard 1.3.1 ð21Þ Applications. This Standard applies to the instal- lation ofall powered platforms and traveling ladders and gantries. Permanentpowered platforms shall be provided on all buildings with vertical platform travel exceeding 300 ft (91 m). 1.3.2 Deviations. Deviations...