Washington Administrative Code › Title 296 - Labor and Industries, Department of › Chapter 296-155 - Safety standards for construction work › Part F-1 - RIGGING REQUIREMENTS FOR MATERIAL HANDLING › Section 296-155-33605 - Definitions

Current through Register Vol. 24-14, July 15, 2024
Angle of loading
The acute angle between
				  horizontal and the leg of the rigging, often referred to as horizontal angle.
				  See Figures 7 and 22.
Anti two-block device
. A device that, when
				  activated, disengages all crane functions whose movement can cause
				  two-blocking.
Basket hitch
. A method of rigging a sling in
				  which the sling is passed around the load and both loop eyes or end fittings
				  are attached to the lifting device.
Below-the-hook lifting device
. A device used for
				  attaching loads to a hoist. The device may contain components such as slings,
				  hooks, rigging hardware, and lifting attachments.
Bird caging
. The twisting of fiber or wire rope
				  in an isolated area of the rope in the opposite direction of the rope lay,
				  thereby causing it to take on the appearance of a bird cage.
Braided wire rope
. A wire rope formed by
				  plaiting component wire ropes.
Bridle wire rope sling
. A sling composed of
				  multiple legs with the top ends gathered in a fitting that goes over the
				  lifting hook.
Cable laid endless sling-mechanical joint
. A
				  wire rope sling made endless from one continuous length of cable laid rope with
				  the ends joined by one or more metallic fittings.
Cable laid grommet-hand tucked
. An endless wire
				  rope sling made from one continuous length of rope formed to make a body
				  composed of 6 ropes around a rope core. The rope ends are tucked into the body,
				  thus forming the core. No sleeves are used.
Center of gravity
. The center of gravity of any
				  object is the point in the object around which its weight is evenly
				  distributed. If you could put a support under that point, you could balance the
				  object on the support.
Choker hitch
. A method of rigging a sling in
				  which the sling is passed around the load, then through one loop eye, end
				  fitting, or other device, with the other loop eye or end fitting attached to
				  the lifting device. This hitch can be done with a sliding choker hook or
				  similar device.
Come-a-long
. A mechanical device typically
				  consisting of a chain or cable attached at each end that is used to facilitate
				  movement of materials through leverage.
Competent person
. One who is capable of
				  identifying existing and predictable hazards in the surroundings or working
				  conditions which are unsanitary, hazardous, or dangerous to employees, and who
				  has authorization to take prompt corrective measures to eliminate them.
Cross rod
. A wire used to join spirals of metal
				  mesh to form a complete fabric. See Figure 11.
Design factor
. The ratio between nominal or
				  minimum breaking strength and rated load.
Electrical contact
. When a person, object, or
				  equipment makes contact or comes close in proximity with an energized conductor
				  or equipment that allows the passage of current.
Fabric (metal mesh)
. The flexible portion of the
				  sling exclusive of end fittings consisting of a series of transverse spirals
				  and cross rods.
Fall zone
. The area (including, but not limited
				  to, the area directly beneath the load) in which it is reasonably foreseeable
				  that partially or completely suspended materials could fall in the event of an
				  accident.
Flange points
. A point of contact between rope
				  and drum flange where the rope changes layers.
Hitch (hitched)
. A method of rigging (attaching)
				  a sling temporarily to a load or object for the purpose of lifting.
Hoist
. A mechanical device for lifting and
				  lowering loads by winding rope onto or off a drum.
Hoisting
. The act of raising, lowering or
				  otherwise moving a load in the air with equipment covered by this standard. As
				  used in this standard, "hoisting" can be done by means other than wire
				  rope/hoist drum equipment.
Hoisting equipment
. A machine for lifting and
				  lowering a load and moving it horizontally. The machine may be fixed or mobile
				  and be driven manually, by power, or by a combination of both.
Hook latch
. A mechanical device used to close
				  the throat opening of a hook.
Load
. The weight of the object being lifted or
				  lowered, including the weight of the load-attaching equipment such as the load
				  block, ropes, slings, shackles, and any other auxiliary attachment.
Load ratings
. A set of rated loads for
				  stipulated hoisting equipment configurations and operating conditions.
Master coupling link
. An alloy steel welded
				  coupling link used as an intermediate link to join alloy steel chain to master
				  links.
Master link
. Forged or welded steel link used to
				  support all members (legs) of an alloy steel chain sling or wire rope
				  sling.
Mechanical coupling link (alloy steel chain)
. A
				  nonwelded, mechanically closed link used primarily to attach fittings to alloy
				  steel chain.
Operational controls
. Levers, switches, pedals
				  and other devices for controlling equipment operation.
Procedures
. Include, but are not limited to:
				  Instructions, diagrams, recommendations, warnings, specifications, protocols,
				  and limitations.
Qualified person
. A person who, by possession of
				  a recognized degree, certificate, or professional standing, or who by extensive
				  knowledge, training and experience, successfully demonstrated the ability to
				  solve/resolve problems relating to the subject matter, the work, or the
				  project.
Qualified rigger
. A rigger who meets the
				  requirements in WAC
				  296-155-33700.
Rated capacity
. The maximum working load
				  permitted by the manufacturer under specified working conditions. Such working
				  conditions typically include a specific combination of factors such as
				  equipment configuration, radii, boom length, and other parameters of
				  use.
Rotation resistant rope
. A type of wire rope
				  construction which reduces the tendency of a rope to rotate about its axis
				  under load. Usually, this consists of an inner system of core strands laid in
				  one direction covered by an outer system of strands laid in the opposite
				  direction.
RPE
. A registered professional engineer licensed
				  under RCW
				  18.43.040(1).
RPSE
. A registered professional structural
				  engineer licensed under
				  RCW
				  18.43.040(1).
Running wire rope
. A wire rope that moves over
				  sheaves or drums.
Safety or health standard
. A standard adopted
				  under this chapter.
Section
. A section of this part, unless
				  otherwise specified.
Sling
. An assembly to be used for lifting when
				  connected to a lifting mechanism. The upper portion of the sling is connected
				  to the lifting mechanism and the lower supports the load, as described in this
				  part.
Spiral
. A single transverse coil that is the
				  basic element from which metal mesh is fabricated.
Standing wire rope
. A supporting wire rope which
				  maintains a constant distance between the points of attachment to the two
				  components connected by the wire rope.
Two blocking
. A condition in which a component
				  that is uppermost on the hoist line such as the load block, hook block,
				  overhaul ball, or similar component, comes in contact with the boom tip, fixed
				  upper block or similar component. This binds the system and continued
				  application of power can cause failure of the hoist rope or other
				  component.
Vertical hitch
. A method of rigging a sling in
				  which the load is attached to the loop eye or end fitting at one end of the
				  sling and the loop eye or end fitting at the other end is attached to the
				  lifting device. Any hitch less than 5 degrees from the vertical may be
				  considered a vertical hitch.
Wire rope
. A flexible rope constructed by laying
				  steel wires into various patterns of multiwired strands around a core system to
				  produce a helically wound rope.
Working load
. The external load applied to the
				  hoisting equipment, including the personnel lifting platform, its contents, and
				  the load attaching equipment, such as lowered load block, shackles, and
				  slings.
Statutory Authority:
					 RCW
					 49.17.010,
					 49.17.040,
					 49.17.050,
					 49.17.060 and chapter 49.17 RCW,
					 and 29 C.F.R. 1926, Subpart CC. 13-02-068, § 296-155-33605, filed
					 12/31/12, effective 2/1/13.