General crane safety
The formula for determining the area of a triangular shaped object is- A) Base x Height divided by 2 B) Base x Height × 2 C) Length x Width x Height D) None of the above
A) Base x Height divided by 2
A floating crane with a capacity of 200,000 pounds is a ________crane. A) Category 1 B) Category 2 C) Category 3 D) Category 4
A) Category 1
A monorail hoist with less than 20,000 pounds capacity is a crane. A) Category 1 B) Category 2 C) Category 3 D) Category 4
A) Category 1
A portal crane with a capacity of 120,000 pounds is a crane. A) Category 1 B) Category 2 C) Category 3 D) Category 4
A) Category 1
A rubber-tired gantry crane with a capacity of 16,000 pounds is a crane. A) Category 1 B) Category 2 C) Category 3 D) Category 4
A) Category 1
Commercial truck-mounted cranes having telescoping or articulating booms and a capacity of less than 2,000 pounds are classified as cranes. A) Category 1 B) Category 2 C) Category 3 D) Category 4
A) Category 1
When crane accidents happen or damage is found, you must do all of the following EXCEPT A) Continue operating until the supervisor performs an evaluation B) Put the load in a safe condition C) Standby for instructions D) Stop operations E) Contact your supervisor
A) Continue operating until the supervisor performs an evaluation
What types of power does a Category 1 or 4 crane generally use, and what is its source? A) Electric or hydraulic power supplied by a diesel engine B) Pneumatic and hydraulic power supplied by a compressor C) Hydraulic and water power supplied by a compressor D) Preumatic and electric power supplied by a backup generator
A) Electric or hydraulic power supplied by a diesel engine
If the minimum crane counterweight clearance cannot be achieved, the crane team must- A) Erect barricades around the crane B) Rotate the crane slowly and cautiously C) Sound the horn to warn personnel in the area D) Post warning signs
A) Erect barricades around the crane
The values listed in the manufacturer's capacity charts for most mobile cranes are- A) Gross Capacities B) Net Capacities C) Maximum Radi D) Total Capacity E) None of the above
A) Gross Capacities
How should an operator check the hoist brakes when lifting a load? A) Lift the load several feet off the ground and stop hoisting to check for slippage of the hoist brake B) Lift the load into the upper limit suitch and check for lowering of the load, C) Lift the load a few inches off the ground and stop hoisting to ensure there is no slippage of the brakes.
A) Lift the load several feet off the ground and stop hoisting to check for slippage of the hoist brake
Which of the following is used with a physical locking device placed at the energy source? A) Lockout Tag B) Yellow Caution Tag C) Red Danger Tag D) Out of Service Tag
A) Lockout Tag
What is the crane communications hand signal pictured with the arm extended downward, the forefinger pointing down, and the hand moving in a small horizontal circle? A) Lower B) Move slowly C) Hoist D) Travel E) Boom up
A) Lower
Which of the following is NOT part of an ODCL check? A) Maintenance Check B) Operational Check C) Walk Around Check D) Machinery House Check E) Operator Cab Check
A) Maintenance Check
If you find a deficiency that will affect the safe operation of the crane during the pre-operational check, all of the following actions must be taken EXCEPT- A) Operate that specific function again to ensure there is a problem B) Notify your supervisor C) Note the finding on the ODCL D) Secure the crane E) Follow supervisor's instructions
A) Operate that specific function again to ensure there is a problem
Which of the following is NOT an acceptable method of communication between the signal person and the crane operator? A) Signal Flags B) Direct Voice C) Hand Signals D) Sound-powered Phones E) Approved Radios
A) Signal Flags
Extending a telescoping boom without lowering the hoist may result in "two-blocking" the crane. A) True B) False
A) True
Most synthetic web slings should NOT be used in areas where temperatures exceed 194 degrees Fahrenheit. A) True B) False
A) True
Portal crane operators shall stop crane travel if materials or vehicles are inside crane clearance lines. A) True B) False
A) True
The Rigger-in-Charge has primary responsibility for determining the weight of an object to be hoisted; however, the operator must be satisfied that the estimated weight to be lifted will not exceed the safe load carrying capacity of the crane. A) True B) False
A) True
The crane operator can check the accuracy of the load moment indicator (LMI) against known weights and radii. A) True B) False
A) True
The maximum capacity for a crane can be limited by the number of parts of wire rope reeved between the hook block and hoisting sheaves. A) True B) False
A) True
The rated load of the hook block installed on a crane may limit the crane's lifting capacity. A) True B) False
A) True
Components that affect the safety and capability of the Weight Handling Equipment by stopping or limiting the operation when activated are A) operational safety devices B) general safety devices C) alterations and/or modifications D) load bearing parts E) load controlling parts
A) operational safety devices
Why should the hook be positioned directly over the load when attaching the load? A) to avoid side loading of the boom and dragging the load as it is picked up B) to make it harder to attach the rigging gear to the load C) so the Riggers can drag the load into place D) so the crane operator can place a side pull on the crane
A) to avoid side loading of the boom and dragging the load as it is picked up
What is the minimum required clearance when operating a crane in the vicinity of overhead electrical transmission lines with a voltage of 50,000 volts or less? A) 5 feet B) 10 feet C) 20 feet D) 30 feet E) 40 feet
B) 10 feet
What is the minimum amount of rope that shall be on a grooved drum and a smooth drum? A) There is no minimum B) 4 full wraps, 2 full wraps C) 2 full wraps, 3 full wraps D) 6 full wraps, 4 full wraps E) 1 full wrap, 2 full wraps
B) 4 full wraps, 2 full wraps
When making personnel lifts, the capacity of a mobile crane for a given radius is reduced by- A) 25% B) 50% C) 75% D) 80% E) 100%
B) 50%
What is the weight of a 24 square foot, 2 inch thick aluminum plate with a unit weight of 15 lbs. per square foot of material per inch of thickness? A) 348 pounds B) 720 pounds C) 6,720 pounds D) 60 pounds E) 120 pounds
B) 720 pounds
What is a jib boom? A) A boom that is attached to the main boom to allow rotation of the load B) An extension attached to the main boom used when lifting light loads to a higher elevation than that permitted by the main boom C) A boom that is used to lift extremely heavy loads
B) An extension attached to the main boom used when lifting light loads to a higher elevation than that permitted by the main boom
Why is it important to have bent or dented crane boom members inspected and evaluated? up A) Because bends and dents may cause the wire rope to get hung B) Because bends and dents can reduce the strength of a boom resulting in sudden collapse C) Because bends and dents may cause the crane to lose stability and tip over D) Because bends and dents can cause the capacity of the crane to be reduced during the next load test
B) Because bends and dents can reduce the strength of a boom resulting in sudden collapse
A pillar-jib crane with a capacity of 22,000 pounds is a crane. A) Category 1 B) Category 2 C) Category 3 D) Category 4
B) Category 2
An OET Bridge crane with a rated capacity of 16,000 pounds is a__________crane. A) Category 1 B) Category 2 C) Category 3 D) Category 4
B) Category 2
Bridge crane with rated capacities of 20,000 pounds or greater are classified as_______cranes. A) Category 1 B) Category 2 C) Category 3 D) Category 4
B) Category 2
When operating floating cranes, you must start swinging or rotating quickly and stop smoothly to prevent excessive barge list. A) True B) False
B) False
Which of the following lift types would NOT be considered a complex lift? A) Multiple-crane lifts B) Oxygen/Acetylene bottles in racks designed for lifting O C) Large geometric shapes D) Loads with multi-level attachment points E) Hazardous or explosive materials
B) Oxygen/Acetylene bottles in racks designed for lifting
When are operators required to perform an Operator's Daily Check of the crane? A) At the end of the shift B) Prior to the first use of the crane each day C) On the annual service D) Before each lift E) After the crane has been serviced
B) Prior to the first use of the crane each day
The horizontal distance from the center of rotation of the crane to the center of the hoist line(s) with load applied is called A) Boom Length B) Radius C) Lift Zone D) Quadrant E) Circumference
B) Radius
If you find cracking or flaking paint on a welded joint of a structural component on the boom, you should A) Look closer to see if it is a crack. B) Report it immediately to your supervisor. C) Do nothing as it is not significant. D) Make a mental note to investigate it later. E) Note it on the ODCL, but do not report it.
B) Report it immediately to your supervisor.
What signal may an operator obey from a person other than the designated signal giver? A) Hoist B) Stop C) Dog Everything D) Swing
B) Stop
What are the actions required if an asterisked item on the ODCL is found unsatisfactory during the pre-use check of the crane? A) Stop operations and notify your supervisor. Keep operating the crane until engineering or maintenance arrives. B) Stop operations, notify your supervisor of the condition, and annotate the deficiency on the ODCL. C) Stop operation and notify engineering of the deficiency. D) Note the deficiency on the ODCL and keep operating the crane until engineering arrives to perform an evaluation.
B) Stop operations, notify your supervisor of the condition, and annotate the deficiency on the ODCL.
Who is responsible for making certain that a load is properly secured and balanced before a lift is made? A) The rigging supervisor, but the Rigger will check for any defects prior to the lift B) The crane operator, but the Rigger-In-Charge shall verify the load is properly secured prior to lifting C) The Rigger, but the Operator shall not lift a load if he or she detects any defects in the attachment D) The crane walker, but the Rigger-In-Charge shall verify the load is properly secured
B) The crane operator, but the Rigger-In-Charge shall verify the load is properly secured prior to lifting
What is the bridge crane communications hand signal pictured with the palms up, fingers closed, thumb pointing in the direction of motion, and jerking horizontally? A) Bridge travel B) Trolley travel C) Hoist D) Move slowly E) Swing
B) Trolley travel
To determine how much weight can be lifted with a crane, you must deduct the weight of from the gross capacity shown on the load chart. A) attachments, hooks, and blocks B) all rigging gear C) only the attachments D) the counterweights
B) all rigging gear
Why should crane swing be relatively slow? A) so that the crane can be operated for longer periods B) to prevent outward swing of the load due to centrifugal force C) to keep the operator from having to correct misalignment D) to prevent the load from falling out of the rigging gear
B) to prevent outward swing of the load due to centrifugal force
When should a tagline be used during lifting operations? A) when lifting a load over or near electrical transmission lines B) to prevent the load from swinging or rotating C) when the supervisor approves their use D) only when lifting the load to extreme heights
B) to prevent the load from swinging or rotating
On cranes, lowering the boom with the hook blocks raised will most likely result in A) tipping B) two-blocking C) overloading D) insufficient hook height E) none of the above
B) two-blocking
When ground conditions for setting up a mobile crane are less than ideal, operators must_______ A) reduce capacity B) use blocking or cribbing C) use sandbags on the outriggers D) perform a trial lift without load E) use extreme caution and slow speeds
B) use blocking or cribbing
If an object is 6 feet long, 4 feet wide, and 2 inches thick, what is the area of the object? A) 4 square feet B) 4 cubic feet C) 24 square feet D) 24 cubic feet E) 48 square feet
C) 24 square feet
Why should extreme caution be used when lifting loads from the water? A) Because the load weight may decrease on the crane due to loss of buoyancy and suction. B) Because you may fall in the water. C) Because the load on the crane may increase as the object leaves the water due to loss of buoyancy, water held inside the object, and/or surface tension (suction).
C) Because the load on the crane may increase as the object leaves the water due to loss of buoyancy, water held inside the object, and/or surface tension (suction).
New shackles put into the weight handling equipment program are required to have all of the following markings EXCEPT- A) Date of manufacture B) Rated load C) Manufacturer name, logo, or trademark
C) Manufacturer name, logo, or trademark
All of the following require a license to operate EXCEPT a(n)- A) Cab-operated category 3 bridge crane B) Mobile hydraulic truck crane C) Non-cab operated category 3 bridge crane D) Articulating boom category 4 crane E) Floor-operated category 2 bridge crane
C) Non-cab operated category 3 bridge crane
If the crane operator and the Rigger-in-Charge disagree on whether or not a load is safe to lift, the operator should- A) Follow the instructions of the Rigger-in-Charge B) Note the incident on the back of the ODCL card C) Not operate the crane until contacting the supervisor to resolve the issue D) Proceed slowly with extreme caution E) Tell his or her supervisor at the end of the shift
C) Not operate the crane until contacting the supervisor to resolve the issue
In cold weather operation, what precautions should be taken during the pre-operational check or ODCL to avoid damage when sheaves may be frozen? A) Check the hoist and boom lower limit switches first B) Hoist down first and check the lower limit switch C) Raise the blocks and boom before lowering them D) Lower the boom prior to raising it E) Lower the blocks prior to raising them
C) Raise the blocks and boom before lowering them
All of the following are principle parts of an overhead traveling crane EXCEPT- A) Operator's cab or pendant control B) End trucks C) Shackles and eyebolts D) Bridge girders E) Trolley with hoisting mechanism
C) Shackles and eyebolts
While performing a pre-use check, the operator must check the wire rope system for all of the following EXCEPT- A) Excessive corrosion B) Damage of any kind C) Size and grade of wire rope D) Proper sheave movement E) Proper spooling on the drum
C) Size and grade of wire rope
When taking any medications that can affect a person's capability to think, reason, or react in normal situations, the operator should do which of the following? A) Operate more cautiously. B) Report it to his or her supervisor. C) Stay at home. D) See how he or she feels driving to work. E) Nothing. It is a personal thing.
C) Stay at home.
What should an operator do if he or she is not sure of the meaning of a signal? A) Place the load in a safe area B) Keep operating as long as he or she can see the load C) Stop operation until the meaning of the signal is understood D) Guess at what the signal means until the Rigger signals to stop operations
C) Stop operation until the meaning of the signal is understood
The minimum crane team for a mobile crane on outriggers would consist of- A) The Crane Operator, Rigger Supervisor, and Crane Rigger B) The Crane Operator, Crane Supervisor, Rigger Supervisor, and Crane Rigger C) The Crane Operator, Crane Supervisor, and Crane Rigger D) The Crane Operator and Rigger-in-Charge E) The Crane Operator, Crane Walker, and Crane Rigger
C) The Crane Operator, Crane Supervisor, and Crane Rigger
When is it permissible for an operator to leave the controls of a crane while a load is suspended from the hook? A) When the operator is working more than one job B) When a Rigger stands by the load and prevents personnel from entering the area C) The operator shall remain at the controls at all times while a load is suspended from the hook. D) When the supervisor approves it
C) The operator shall remain at the controls at all times while a load is suspended from the hook.
What is two-blocking, and why is two-blocking dangerous? A) Two-blocking occurs when the hook contacts another block or hook on the crane. It is dangerous because the hook could damage the crane, causing loss of load control. B) Two-blocking occurs when the block or hook contacts the ground. It is dangerous because the wire rope may come off of the drum and drop the block. C) Two-blocking occurs when the hook block comes in contact with the upper sheave block during hoisting of the hook. It is dangerous because it could result in damage to the crane, parting of the hoist lines, and dropping the load.
C) Two-blocking occurs when the hook block comes in contact with the upper sheave block during hoisting of the hook. It is dangerous because it could result in damage to the crane, parting of the hoist lines, and dropping the load.
Is it necessary for the operator to see the load or work area? A) Not if there is a designated signal person who is in control of the lift and is in view of the operator, or if the signal giver is in constant radio contact with the operator. B) Not if the operator knows how far to hoist or lower the load. C) Yes, at all times during a lift.
C) Yes, at all times during a lift.
The crane operator is responsible for the pre-use______of the crane. A) safety B) condition C) check
C) check
The crane operator STOPS the crane whenever_____is in question. A) the lift B) conditions C) safety D) the union contract
C) safety
When pre-planning a lift with a mobile crane, which of the following is the LEAST important information the crane operator must know? A) the total weight of the lift, including the rigging/lifting gear B) the maximum height that the load will be raised C) the latest maintenance service date for the crane D) the maximum radius at which the crane will be working E) the path that the load will be lifted from, carried through, and placed in
C) the latest maintenance service date for the crane
Shackles, wire rope slings, and/or eyebolts may be used to their full capacity when used within of vertical. A) 5 degrees B) 10 degrees C) 15 degrees D) 20 degrees E) 30 degrees
D) 20 degrees
Side loading a crane boom by dragging loads or lifting a load with a non-vertical hoist may result in A) Destructive stresses placed on the boom and sheaves B) Possible overload due to swinging of the load after lift-off C) Uncontrolled movement of the load and injury to personnel D) Any of the listed factors above
D) Any of the listed factors above
Crane operators at naval activities may be required to operate various types of cranes for which they hold a license. Which of the following can best ensure operator proficiency and safety? A) Operate the crane in an open area until familiar with the specific characteristics of the crane B) Pass additional written and performance tests C) Operate at reduced speeds until confident and capable D) Be familiarized by a qualified person before operating the crane for the first time E) No additional tests are needed
D) Be familiarized by a qualified person before operating the crane for the first time
A commercial truck mounted crane with a capacity of 14,000 pounds is a______crane. A) Category 1 B) Category 2 C) Category 3 D) Category 4
D) Category 4
The crane operator must check the certification information on the crane for before operating the crane. A) Operator's name, license number, and expiration date B) Certified capacity, gross vehicle weight, and expiration date C) Crane ID number, OEM capacity, and test date D) Certification expiration date, crane ID, and certified capacity E) Crane manufacturer, crane ID, and certified capacity
D) Certification expiration date, crane ID, and certified capacity
What is the crane communications hand signal pictured with the arm vertical, the forefinger pointing up, and the hand moving in a small horizontal circle? A) Boom up B) Travel C) Move slowly D) Hoist E) Lower
D) Hoist
The majority of crane accidents are attributed to which of the following? A) Mechanical failure B) Improper signals C) Inclement weather D) Improper crane operations E) Personnel error
D) Improper crane operations
Sling angles affect the actual stress on each leg of the sling. Lowering the angle measured from the horizontal will- A) Not change the actual stress on each leg B) Double the stress on each leg C) Cause the sling to be overloaded D) Increase the stress on each leg E) Decrease the stress on each leg
D) Increase the stress on each leg
Components that control, restrain, or position the load and upon failure W would cause dropping, shifting, or uncontrolled movement of the load are A) Alterations and/or modifications B) Operational safety devices C) Load bearing parts D) Load controlling parts E) General safety devices
D) Load controlling parts
During performance of your pre-operational check of the crane, you find minor deficiencies. What do you do? A) Stop, secure the crane, and notify your supervisor. Do not operate the crane until the deficiencies are corrected B) Shut the crane down and return to your supervisor for additional work C) Call your supervisor and let him or her know what the deficiencies are D) Note the deficiencies on the ODCL
D) Note the deficiencies on the ODCL not A) Stop, secure the crane, and notify your supervisor. Do not operate the crane until the deficiencies are corrected
When can an unlicensed crane operator trainee operate a crane? A) When their supervisor tells them to operate a crane B) When he or she needs to operate a crane to get the job done C) In an emergency D) Only under the direct observation of a licensed operator
D) Only under the direct observation of a licensed operator
What is the crane communications hand signal pictured with the arm extended, fist closed, and the thumb pointing up? A) Hoist B) Use main hook C) Boom up and lower hoist D) Raise boom E) Use whip hoist
D) Raise boom
Crane operators are responsible for all of the following EXCEPT- A) Doing a thorough pre-use check B) Maintaining constant communication with the signalman C) Lifting and landing all loads safely D) Slowing down when signals are unclear
D) Slowing down when signals are unclear
The two expiration dates that are of particular importance to crane operators are- A) Vehicle registration expiration date B) Hydraulic oil expiration date C) CAC card expiration date D) The certification expiration date of the crane E) The crane operator's license expiration date
D) The certification expiration date of the crane E) The crane operator's license expiration date
Knowing the load's approximate center of gravity prior to rigging or lifting a load is important- A) so the load does not shift, tip, or swing out of radius B) to help calculate stress in each sling C) to help choose the correct rigging gear D) for all reasons listed above
D) for all reasons listed above
What is the definition of "boom length"? A) the distance from the boom "heel" or "foot" pins to the jib attachment pins B) the distance from the rotate base to the center of the boom tip sheave C) the distance from the center of rotation on the crane to the center of the boom tip sheave D) the distance from the boom "heel" or "foot" pins to the center of the boom tip sheave
D) the distance from the boom "heel" or "foot" pins to the center of the boom tip sheave
How is electrical current conveyed from the revolving portion of the crane to the lower crane structure? A) through the electrical panels B) through transistors C) through the main circuit board D) through the collector ring system
D) through the collector ring system
Regardless of the method of communication used, all crane signals must A) hand signals B) visible C) given by radio D) understood
D) understood
If an object is 6 feet long, 5 feet wide, and 4 feet high, what is the volume of the object? A) 30 square feet B) 30 cubic feet C) 60 cubic feet D) 120 square feet E) 120 cubic feet
E) 120 cubic feet
Crane Configuration: The Grove RT740 is equipped with a stowed tele-offsettable boom extension. The whip line with a 7 and 1/2 ton headache ball is reeved over the auxiliary boom nose. The main block is a 45-ton 3-sheave w/cheekplates. Use the Grove RT-740 Rough Terrain Load Chart to answer this question: Find the net capacity for the main hook reeved with 6 parts of line using a 75-foot boom length at a maximum radius of 32 feet. A) 18,988 pounds B) 16,888 pounds C) 15,888 pounds D) 14,978 pounds E) 18,338 pounds
E) 18338 ? not B) 16,888 pounds
Which of the following can affect the crane's capacity? A) Out of level B) Outrigger position C) Side loading D) Load swing E) Any of the listed factors above
E) Any of the listed factors above
Which of the following steps DOES NOT apply to securing lattice boom cranes? A) Place the boom at approximately 45 degrees B) Disengage the master clutch C) Lock down all foot brakes D) Retract the boom fully E) Engage all hoist pawls
E) Engage all hoist pawls
A crane accident occurs when any element of the crane operating envelope fails to perform correctly during crane operations, maintenance, or testing which could result in any of the following except- A) Two-Blocking or Overload B) Personnel Injury or Death C) Dropped Load or Damage D) Collision or Derailment E) Equipment malfunction
E) Equipment malfunction
Components that provide protection for operation and maintenance personnel working on or in the path of cranes are? A) Operational Safety Devices B) Alterations/Modifications C) Load Controlling Parts D) Load Bearing Parts E) General Safety Devices
E) General Safety Devices
Which of the following is considered to be the best way the operator can ensure the crane is safe to operate on any given day? A) Perform annual inspection and test B) Properly inflate tires C) Perform required maintenance D) Set up on firm and level surfaces E) Perform Daily Pre-use Checks
E) Perform Daily Pre-use Checks
What is the crane communications hand signal pictured with the arm extended to the side, the fist closed, and the index finge pointing outward? A) Use whip hoist B) Stop C) Lower Boom D) Travel E) Swing or Rotate
E) Swing or Rotate
Manufacturer's load rating charts for cranes must be- A) Posted outside the cab B) Visible to the Crane Rigger C) Available from the engineering department D) Avallable from the supervisor E) Visible to the operator
E) Visible to the operator
Components that support the load and upon failure would cause dropping or uncontrolled lowering of the load are A) alterations and/or modifications B) general safety devices C) load controlling parts D) operational safety devices E) load bearing parts
E) load bearing parts
When should the rotate locking device be engaged on a mobile crane? A) when hoisting a load B) while the crane is traveling with a load in "pick and carry" mode C) any other time required by the crane OEM D) when landing a load E) whenever using the LMI system F) whenever the operator leaves the cab
incorrect B) while the crane is traveling with a load in "pick and carry" mode C) any other time required by the crane OEM D) when landing a load F) whenever the operator leaves the cab
Crane Configuration: The Grove RT740 is equipped with a stowed tele-offsettable boom extension. The whip line with a 7 1/2 ton headache ball is reeved over the auxiliary boom nose. The main block is a 45-ton 3-sheave w/cheekplates. Use the Grove RT-740 Rough Terrain Load Chart to answer this question: Find the gross capacity for the main hook reeved with 6 parts of line using a 75-foot boom length and lifting at a maximum radius of 32 feet. A) 17,400 pounds B) 17,985 pounds C) 20,400 pounds D) 21,050 pounds E) 23,800 pounds
incorrect C) 20,400 pounds
When setting up mobile cranes, the minimum clearance between the rotating upper works and fixed objects should be? A) 1 foot B) 2 feet C) 3 feet D) 4 feet E) 5 feet
incorrect D) 4 feet
Failure to lower the tilt-blocks or bed wedges when traveling locomotive cranes around curves will most likely result in- A) Loss of capacity B) Overloading the crane C) Overheating brakes D) Loss of stability E) Derailment
incorrect D) Loss of stability
Who is primarily responsible for evaluating a crane operator's physical and emotional fitness? A) The Crane Operator B) The Dispatcher C) The Crane Supervisor D) The activity Medical Officer E) All listed are responsible
incorrect D) The activity Medical Officer
Select three factors that shall be considered when selecting a crane for a particular job A) Background noise levels B) The height of the lift C) The crane operator's qualifications D) The weight of the load E) The Rigger's experience F) The radius of the lift
incorrect D) The weight of the load E) The Rigger's experience F) The radius of the lift
When traveling a hydraulic truck crane over the highway between job sites, always secure the________to the carrier frame with a weak link to prevent damage. A) cribbing B) hooks C) outrigger pads D) rigging gear E) jib or extension
incorrect E) jib or extension
