Craning Terms

Question 1

What is the load?

Answer 1

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

Question 2

Gross load

Answer 2

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

Question 3

Net load

Answer 3

The weight of the piece being lifted

Question 4

Static load

Answer 4

The weight of the gross load when the load is stationary

Question 5

Dynamic load

Answer 5

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

Question 6

Shock load

Answer 6

Sudden or unexpected load on the lifting system

Question 7

Safe working load formula

Answer 7

UBS ultimate breaking strength divided by the safety factor= SWL

Question 8

Crane center of gravity

Answer 8

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

Question 9

Load center of gravity

Answer 9

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

Question 10

Stowed jib

Answer 10

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

Question 11

Stored jib

Answer 11

When jib or boom extension is stored off of the crane

Question 12

Assist crane

Answer 12

A crane used to assist assembling or disassembling a crane

Question 13

Blocking (Cribbing)

Answer 13

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

Question 14

Boom angle indicator

Answer 14

A device which measured the horizontal angle of the boom

Question 15

Boom length indicator

Answer 15

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

Question 16

Boom stop

Answer 16

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

Question 17

Boom suspension system

Answer 17

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

Question 18

Competent person

Answer 18

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

Question 19

Controlling entity

Answer 19

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

Question 20

Counterweight

Answer 20

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

Question 21

Crawler crane

Answer 21

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

Question 22

Crossover points

Answer 22

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

Question 23

Dedicated channel

Answer 23

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

Question 24

Dedicated spotter(power lines)

Answer 24

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

Question 25

Directly under load

Answer 25

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

Question 26

Encroachment

Answer 26

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

Question 27

Fall zone

Answer 27

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

Question 28

Flange points

Answer 28

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

Question 29

Free fall of load line

Answer 29

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

Question 30

List

Answer 30

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

Question 31

Load

Answer 31

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

Question 32

LMI load moment indicator

Answer 32

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

Question 33

Operational aids

Answer 33

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

Question 34

Pendants

Answer 34

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

Question 35

Qualified person

Answer 35

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

Question 36

Rated capacity

Answer 36

The maximum working load permitted by the manufacturer

Question 37

Reeving

Answer 37

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

Question 38

Side loading

Answer 38

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

Question 39

Upperworks/superstructure/upper structure

Answer 39

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

Question 40

Trim

Answer 40

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

Question 41

Two blocking

Answer 41

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.

Question 42

Types of cranes

Answer 42

Lattice boom and hydraulic boom