B30.17 includes provisions that apply to the construction, installation, operation, inspection, and maintenance of hand-operated and power-driven overhead and gantry cranes that have a top-running single girder bridge, with one or more underhung hoists operating on the lower flange of the bridge girder, used for vertical lifting and lowering of freely suspended, unguided loads.
ANSI/ASME B30.17-2006 history
2015ANSI/ASME B30.17-2015 Cranes and Monorails (With Underhung Trolley or Bridge) Safety Standard for Cableways, Cranes, Derricks, Hoists, Hooks, Jacks, and Slings
2006ANSI/ASME B30.17-2006 Overhead and Gantry Cranes (Top Running Bridge, Single Girder, Underhung Hoist)