Craning Terms Flashcards
What is the Safety Factor?
The amount by which the ultimate strength (or load) is divided to get the rated strength (or safe working load)
What is the difference between stowed and stored boom extensions?
Stowed is when jobs or boom extensions are NOT in use and are pinned to the base section of the boom.
Stores is when the job or boom extensions of the crane are stored off the crane.
A/D Director
An individual who meets this subpart’s requirements for an A/D director, irrespective of the person’s formal job title or whether the person is non management or management personnel
Assembly/Disassembly
The assembly and or disassembly of equipment cover under this standard. The process of increasing the height of the crane is and erection process
Assist Crane
A crane used to assist in assembling or disassembling a crane
Attachments
Any device that expands the range of tasks that can be done by the equipment
Audible Signal
A signal made by a distinct sound or series of sounds
Blocking
Wood or other material used to support equipment or a component and distribute loads to the ground
Blocking
Wood or other material used to support equipment or a component and distribute loads to the ground
Boom Angle Indicator
A device which measure the angle of the book relative to horizontal
Boom Length Indicator
Indicates the length of the permanent part of the boom (such as rules markings on the boom) or as in some computerized systems, the length of the boom with extensions/attachments
Boom Stop
Includes book stops, telescoping book stops, attachment book stops and backstops. These device restrict the book from moving above a certain maximum angel and toppling over backward
Boom Suspension System
A system of pendants, running ropes, sheaves, and other hardware which supports the boom rip and controls the boom angle
Center of Gravity
The point in the object around which its weight is evenly distributed
Competent Person
One who is capable of identifying existing and predictable hazards in surroundings or working conditions and who has the authorization to take prompt corrective measures to eliminate them
Controlled Load Lowering
Lowering a load by means of a mechanical hoist drum device that allows a hoisted load to be lowered with maximum control
Controlling Entity
An employee that is a prime contractor, general contractor, construction manager or any other legal entity which has the overall responsibility for the construction of the project
Counterweight
A weight used to supplement the weight of the equipment in providing stability for lifting loads by counterbalancing those loads
Crossover Points
Locations on a wire ripple which is spooled on a drum where one layer of rope climbs up on and crossed over the previous layer
Dedicated Spotter
His or her sole responsibility is to watch the separation between the power line and the equipment and ensure that the applicable minimum distance is not breached
Drum Rotation
A device on a crane or hoist which indicated in which direction and at what relative speed a particular hoist drum is turning
Electrical Contact
Occurs when a person, object, or equipment makes contact or comes in close proximity with an energized conductor or equipment that allows the passage of current
Encroachment
Where any part of the crane, load line, or load breaches a minimum clearance distance that this sub part required to be maintained from a power line
Fall Zone
The area in which it is reasonably foreseeable that partially or completely suspended materials could fall in the event of an accident
