ASME B30.17-2020 pdf free

ASME B30.17-2020 pdf free.Cranes and Monorails (With Underhung Trolley or Bridge) Safety Standard for Cableways, Cranes, Derricks, Hoists, Hooks, Jacks, and Slings.
crane: a machine for lifting and lowering a load and moving it horizontally with the hoisting mechanism being an integral part of the machine.
crane, automatic: a crane that, when activated, operates through a preset cycle or cycles.
crane, cab-operated: a crane controlled by an operator in a cab attached to the crane or trolley (see Figure 17-0.2-2).
crane, cantilever gantry: a gantry or semigantry crane in which the bridge girder(s) or truss(es) extend transversely beyond the crane runway on one or both sides (see Figure 17.0.2.3).
crane, double-girder: a crane having two bridge girders mounted between, and supported from, the end trucks.
crane,floor-operated: a crane that is controlled by a means suspended from the crane or trolley, or from a wall- mounted station and operated by an operator on the floor or on an independent platform (see Figure 17-0.2-4).
crane, gantry: a crane similar to an overhead crane, except that the bridge for carrying the trolley(s) is rigidly supported on two or more legs running on fixed rails or other runway (see Figure 17-0.2-5).
crane, hot molten material-handling: an overhead crane used for transporting or pouring molten material.
crane, interlocking: a crane with an interlock mechanism on one or both ends, enabling it to be mechanically locked to another crane, fixed transfer section, or spur track for the purpose of transferring a trolley from one to another.
crane, jib: a fixed crane, usually mounted on a wall or building column, consisting of a rotating horizontal boom (either cantilevered or supported by tie rods) carrying a trolley or hoist (see Figure 17-0.2-6).
crane, manually operated: a crane whose travel mechanism is driven by pulling an endless chain, or by manually moving the load.
crane, outdoor: an overhead or gantry crane that operates outdoors and for which provisions are not available for storage in an area that provides protection to the crane from weather conditions.
NOTE: An indoor crane that may operate outdoors on a periodic basis is not classified as an outdoor crane.
crane, overhead: a crane with a movable bridge carrying a movable or fixed hoisting mechanism and traveling on an overhead, fixed runway structure (see Figures 17-0.2.2,17-0.2-4. and 17-0.2-9 for the types covered by this Volume).
crane, pedestal (pillar-jib): a fixed crane consisting of a rotating vertical member with a horizontal arm carrying a trolley and hoist.
crane, polar: an overhead or gantry crane that travels on a circular runway.
crane, portable gantry (A-frame): a crane similar to an overhead crane, except that the bridge for carrying the trolley(s) is rigidly supported on two or more legs supported by casters (see Figure 17-0.2-7).
crane, power-operated: a crane whose mechanism Is driven by electric, pneumatic, hydraulic, or internal combustion means.
crane, pulpit-operated: a crane operated from a fixed operator station not attached to the crane.
crane, remote-operated: a crane controlled by an operator not in a pulpit nor in the cab attached to the crane, and controlled by any method other than a means suspended from the crane.
crane, semigantly: a crane with one end of the bridge rigidly supported on one or more legs that run on a fixed rail, and the other end of the bridge supported by an end truck suspended from an elevated track (see Figure 17-0.2-8).
crane, single-girder: a crane having one bridge girder mounted between, and supported from, the end trucks.
crane, underhung: a crane with a single- or multiple-girder movable bridge carrying a movable or fixed hoisting mechanism and traveling on the lower flanges of an overhead runway (see Figures 17-0.2-4 and 17-0.2.9).
crane, wall: a crane with a jib and hoist, with or without a trolley, traveling on a runway attached to the sidewall or building columns.
crane operators dedicated: an employee whose job is confined solely to the operation of an overhead or gantry crane.
crane operator, nondedicated: an employee who uses an overhead or gantry crane as a tool to assist in the performance of his/her regular job.ASME B30.17 pdf download.