Washington Administrative Code › Title 296 - Labor and Industries, Department of › Chapter 296-24 - General safety and health standards › Part D - MATERIALS HANDLING AND STORAGE, INCLUDING CRANES, DERRICKS, ETC., AND RIGGING › Handling and Storage-Cranes, Derricks, Etc › Section 296-24-24001 - Definitions

Current through Register Vol. 24-14, July 15, 2024
Accessory. A secondary part or assembly of parts which
					 contributes to the overall function and usefulness of a machine.
Angle indicator (boom). An accessory which measures the
					 angle of the boom to the horizontal.
ANSI. The American National Standards Institute.
Appointed. Assigned specific responsibilities by the
					 employer or the employer's representative.
Axis of rotation. The vertical axis around which the crane
					 superstructure rotates.
Axle. The shaft or spindle with which or about which a
					 wheel rotates. On truck- and wheel-mounted cranes it refers to an automotive
					 type of axle assembly including housings, gearing, differential, bearings, and
					 mounting appurtenances.
Axle (bogie). Two or more automotive-type axles mounted in
					 tandem in a frame so as to divide the load between the axles and permit
					 vertical oscillation of the wheels.
Base (mounting). The traveling base or carrier on which the
					 rotating superstructure is mounted such as a car, truck, crawlers, or wheel
					 platform.
Boom (crane). A member hinged to the front of the rotating
					 superstructure with the outer end supported by ropes leading to a gantry or "A"
					 frame and used for supporting the hoisting tackle.
Boom angle. The angle between the longitudinal center-line
					 of the boom and the horizontal. The boom longitudinal centerline is a straight
					 line between the boom foot pin (heel pin) centerline and boom point sheave pin
					 centerline.
Boom hoist. A hoist drum and rope reeving system used to
					 raise and lower the boom. The rope system may be all live reeving or a
					 combination of live reeving and pendants.
Boom stop. A device used to limit the angle of the boom at
					 the highest position.
Brake. A device used for retarding or stopping motion by
					 friction or power means.
Cab. Housing which covers the rotating superstructure
					 machinery and/or operator's station. On truck crane trucks a separate cab
					 covers the driver's station.
Clutch. A friction, electromagnetic, hydraulic, pneumatic,
					 or positive mechanical device for engagement or disengagement of power.
Counterweight. A weight used to supplement the weight of
					 the machine in providing stability for lifting working loads.
Crawler crane. A rotating superstructure with power plant,
					 operating machinery, and boom, mounted on a base, equipped with crawler treads
					 for travel. Its function is to hoist and swing loads at various radii.
Designated. Selected or assigned by the employer or the
					 employer's representative as being qualified to perform specific duties.
Drum. The cylindrical members around which ropes are wound
					 for raising and lowering the load or boom.
Dynamic (loading). Loads introduced into the machine or its
					 components by forces in motion.
Gantry (A-frame). A structural frame, extending above the
					 superstructure, to which the boom supports ropes are reeved.
Jib. An extension attached to the boom point to provide
					 added boom length for lifting specified loads. The jib may be in line with the
					 boom or offset to various angles.
Load (working). The external load, in pounds, applied to
					 the crane, including the weight of load-attaching equipment such as load
					 blocks, shackles, and slings.
Load block (lower). The assembly of hook or shackle,
					 swivel, sheaves, pins, and frame suspended by the hoisting ropes.
Load block (upper). The assembly of hook or shackle,
					 swivel, sheaves, pins, and frame suspended from the boom point.
Load hoist. A hoist drum and rope reeving system used for
					 hoisting and lowering loads.
Load ratings. Crane ratings in pounds established by the
					 manufacturer in accordance with WAC
					 296-24-24005.
Locomotive crane. A rotating superstructure with power
					 plant, operating machinery and boom, mounted on a base or car equipped for
					 travel on railroad track. It may be self-propelled or propelled by an outside
					 source. Its function is to hoist and swing loads at various radii.
Outriggers. Extendable or fixed metal arms, attached to the
					 mounting base, which rest on supports at the outer ends.
Rail clamp. A tong-like metal device, mounted on a
					 locomotive crane car, which can be connected to the track.
Reeving. A rope system in which the rope travels around
					 drums and sheaves.
Rope. Refers to a wire rope unless otherwise
					 specified.
Side loading. A load applied at an angle to the vertical
					 plane of the boom.
Standby crane. A crane which is not in regular service but
					 which is used occasionally or intermittently as required.
Standing (guy) rope. A supporting rope which maintains a
					 constant distance between the points of attachment to the two components
					 connected by the rope.
Structural competence. The ability of the machine and its
					 components to withstand the stresses imposed by applied loads.
Superstructure. The rotating upper frame structure of the
					 machine and the operating machinery mounted thereon.
Swing. The rotation of the superstructure for movement of
					 loads in a horizontal direction about the axis of rotation.
Swing mechanism. The machinery involved in providing
					 rotation of the superstructure.
Tackle. An assembly of ropes and sheaves arranged for
					 hoisting and pulling.
Transit. The moving or transporting of a crane from one job
					 site to another.
Travel. The functions of the machine moving from one
					 location to another, on a job site.
Travel mechanism. The machinery involved in providing
					 travel.
Truck crane. A rotating superstructure with power plant,
					 operating machinery and boom, mounted on an automotive truck equipped with a
					 power plant for travel. Its function is to hoist and swing loads at various
					 radii.
Wheel mounted crane (wagon crane). A rotating
					 superstructure with power plant, operating machinery and boom, mounted on a
					 base or platform equipped with axles and rubber-tired wheels for travel. The
					 base is usually propelled by the engine in the superstructure, but it may be
					 equipped with a separate engine controlled from the superstructure. Its
					 function is to hoist and swing loads at various radii.
Wheelbase. The distance between centers of front and rear
					 axles. For a multiple axle assembly the axle center for wheelbase measurement
					 is taken as the midpoint of the assembly.
Whipline (auxiliary hoist). A separate hoist rope system of
					 lighter load capacity and higher speed than provided by the main hoist.
Winch head. A power driven spool for handling of loads by
					 means of friction between fiber or wire rope and spool.
Order 73-5, § 296-24-24001, filed 5/9/73 and Order
						73-4, § 296-24-24001, filed 5/7/73.