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Crane Class > Craning Terms > Flashcards

Craning Terms Flashcards

1
Q

What is the load?

A

The combined weight of everything mounted or stowed on the boom and anything hanging from the boom tip

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2
Q

Gross load

A

The weight of attachments, rigging, and whatever is on the hook

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3
Q

Net load

A

The weight of the piece being lifted

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4
Q

Static load

A

The weight of the gross load when the load is stationary

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5
Q

Dynamic load

A

Is caused by a sudden change in speed of the lift and attachments, sudden stopping when booming or cabling

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6
Q

Shock load

A

Sudden or unexpected load on the lifting system

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7
Q

Safe working load formula

A

UBS ultimate breaking strength divided by the safety factor= SWL

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8
Q

Crane center of gravity

A

The combined weight and location of: boom carrier and upper works

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9
Q

Load center of gravity

A

Is when the hook is directly over the loads center of gravity, sling attachment point must be over load center of gravity

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10
Q

Stowed jib

A

Jib or boom extension is not in use and pinned to the side of the boom

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11
Q

Stored jib

A

When jib or boom extension is stored off of the crane

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12
Q

Assist crane

A

A crane used to assist assembling or disassembling a crane

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13
Q

Blocking (Cribbing)

A

Wood or other material used to support equipment or a component and distribute loads to the ground, typically used to support lattice boom sections during assembly/disassembly and under out rigger and stabilizer floats

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14
Q

Boom angle indicator

A

A device which measured the horizontal angle of the boom

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15
Q

Boom length indicator

A

Indicates the length of the permanent part of the boom and length of the boom with extensions/attachments

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16
Q

Boom stop

A

Restricts the the boom from moving above certain maximum angles and toppling over backwards

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17
Q

Boom suspension system

A

A system of pendants,running ropes sheaves, and other hardware which supports boom tip and controls boom angle

18
Q

Competent person

A

One who is capable of identifying existing and predictable hazards in the surroundings and who has authorization to take prompt corrective measures to eliminate them

19
Q

Controlling entity

A

An employer 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

20
Q

Counterweight

A

A weight used to supplement the weight of equipment in providing stability for lifting loads by counterbalancing those loads

21
Q

Crawler crane

A

Equipment that has a type of base mounting which incorporates a continuous belt of sprocket driven tracks

22
Q

Crossover points

A

Locations on a wire rope which is spoiled on a drum where one layer of rope climbs up and crosses over the previous layer. This takes place at the flange of the drum as the rope is spooled onto the drum, reaches the flange and begins to wrap back in the opposite direction

23
Q

Dedicated channel

A

A line of communication assigned by the employer who controls the communication system to only one signal person and crane/Derrick or to a coordinated group of cranes,derricks,signal person

24
Q

Dedicated spotter(power lines)

A

The spotters sole responsibility is to watch the separation between the power line and the equipment, load line and load and ensure that the applicable minimum approach distance is not breached

25
Q

Directly under load

A

A part or all of an employee is directly beneath the load

26
Q

Encroachment

A

Is there any part of the crane load line or load breaches a minimum clearance distance that this subpart requires to be maintained from a powerline

27
Q

Fall zone

A

The area in which it is reasonably Foreseeable that partially or completely suspended materials could fall in the event of an accident

28
Q

Flange points

A

Are the points of contact between rope and drum flanges where the rope changes layers

29
Q

Free fall of load line

A

Only the brake is used to regulate the decent of the load line

30
Q

List

A

The angle of inclination about the longitudinal axis of a barge, pontoon, vessel or other means of flotation

31
Q

Load

A

The objects being hoisted/weight of the objects, includes rigging and attachments

32
Q

LMI load moment indicator

A

A system which aids the equipment operator be sensing the overturning moment on the equipment

33
Q

Operational aids

A

Devices that assist the operator in the safe operation of the crane by providing information or automatically taking control of a crane function

34
Q

Pendants

A

a fixed length of wire rope or bar with mechanical fitting at both ends for pinning segments or wire rope together.

35
Q

Qualified person

A

A person who buy possession of a recognize degree, certificate, or professional, standing, or who, by extensive knowledge, training and experience successfully, demonstrated the ability to solve or resolve problems relating to the subject matter the work or the project

36
Q

Rated capacity

A

The maximum working load permitted by the manufacturer

37
Q

Reeving

A

A rope system in which the rope travels around drums or sheaves

38
Q

Side loading

A

A load applied at an angle to the vertical plane of the boom

39
Q

Upperworks/superstructure/upper structure

A

The revolving frame of equipment on which the operating machinery are mounted along with the operators cab. The counterweight is typically supported on the rear of the upper structure and boom or other front end attachment is mounted on the front

40
Q

Trim

A

Angle of inclination about the transverse axis of a barge,pontoon, or vessel

41
Q

Two blocking

A

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.

42
Q

Types of cranes

A

Lattice boom and hydraulic boom

Crane Class (18 decks)

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