Mobile Cranes #3
What is the net capacity of this crane if the gross capacity is 10,000 lbs? (NO CALCULATORS). Load block 350 lbs., Stowed extension 267 lbs, Headache ball 220 lbs, Hose reel 345 lbs, Extra main hoist line 85 lbs, Extra auxiliary line 8 lbs, Lifting beam 1,277 lbs, auxiliary boom point 135 lbs.
7,313 lbs.
What does 89,685 divided by 9 equal? (no calculator)
9,965
At what percentage of the maximum line pull does OSHA require that the operator test the hoist brake?
90 %
According to OSHA, what type of hook is excluded from having a safety latch while setting wooded trusses?
"J" hook
What is the proper audible travel signals when working with cranes?
1 beep stop, 2 beeps forward, 3 beeps back
When performing a proof test on a personnel platform, what is required?
125% load test
What is the minimum pitch diameter of the sheaves on the lower load block if the crane has 1 inch diameter rope?
18 inches
What is the OSHA regulation for cranes working in general industry?
1910.180
When setting up a crane near a cinder block wall, what minimum distance should be maintained between the rear of the rotating superstructure and the wall?
2 feet
When working near power lines that is less than 350kV but you do not know the exact voltage, what is the minimum clearance that must be maintained?
20 feet
According to OSHA Table A, what is the minimum clearance required when working near a power line of 400 kV?
25 ft
Blocking under outrigger pads should be at least?
3 times the size of float pad area
A qualified crane operator is required to pass a physical exam every _______years according to ASME B30.5.
3 years
What does 4 x 12,920 equal? (no calculator)
51,680
According to OSHA Table T, what is the minimum clearance required with an 8 k V line?
6 ft
According to federal regulation, equipment with a luffing jib must have:
A luffing jib limited device
The term reeving means:
A rope system in which rope travels around drums and sheaves.
A whipline or auxiliary hoist line is a _________________.
A secondary hoisting system of lighter load capacity than that provided by the main hoist.
While hoisting personnel in a platform you see on your anemometer the wind speed at the boom tip is 22 mph, what should you do?
Get determination by a qualified person if lift may continue.
While performing a shift inspection, which one of these is required to be inspected as per OSHA 1926.1412?
Ground conditions
When a land crane is working on a barge, the rated capacity of the crane may be modified to account for which of the following?
List and trim
If the readout on an operational aid does not match the crane load chart ratings, what should be used?
Load rating chart
What is the effect of thermal contraction on a hydraulic cylinder?
Oil in cylinder shrinks in size
Rapid acceleration while hoisting would most likely produce?
increase weight to load back
Which of the following would most likely be considered a non-standard attachment?
pile lead adapter
If the load is being pulled at an angle to the vertical axis of the boom, the effect would be?
side load
Which device listed is NOT required on telescopic boom cranes manufactured today?
Outrigger position monitor
The term that best describes what is happening to the crane pictured below is?
Over loading (See Picture the Sheet, no. 41).
Traveling a rear engine mounted wheel mounted mobile crane, with a suspended load you should position the load:
Over the front quadrant
When blocking under a crane's outrigger floats, the blocking should be:
Parallel to outrigger beam and tightly spaced
While performing a shift inspection which one of these are required to be inspected as per OSHA 1926.1412
Pins, bearings, and locking devices for significant wear.
The abbreviation P. T. O. on a crane stands for what?
Power take off
What is the purpose of an integral holding device on a hydraulic cylinder?
Prevent uncontrolled retraction if hydraulic line connection is lost.
When setting up your crane near a newly constructed building, the ground is more likely to be?
Soft
What must never be done to a crane's hoisting cable?
Splice
Cribbing or blocking that has spacing in between blocks are most likely to cause?
Stability decrease
What is the signal person directing the crane operator to do? (Picture of man holding his arm straight out to his side, parallel to ground with his palm facing down).
Stop (See Picture on Sheet)
According to 1926 subpart CC, a directional drum rotation indicator means a device on a hoist or crane which:
b. Indicates in which direction and what relative speed a particular hoist is turning.
Side loading a crane the most common affect would be?
Swing gear failure
What is the signal person directing the crane operator to do? (Man holding his arm out and his forefinger is pointing left)
Swing left (See picture on sheet)
To avoid torsional loading, the boom tip sheaves should be reeved:
Symmetrical
When a load can rotate while being hoisted which of the following is required?
Tagline
A range diagram is used to:
determine the radius, angle, or tip height the crane may be at
Using a crawler crane and performing a pick and carry operation, which of these statements is true?
The pick should be performed with boom inline with the travel direction.
The axis of rotation of a crane is ________________.
The vertical axis around which the superstructure rotates.
Which of the following is the best definition of gross load?
The weight of the load plus other items, such as the hook block, rigging, etc.
If the working area of the crane you are running needs to be barricaded, what is required?
Working radius
The telescopic crane you are operating has 100 ft. of main boom fully extended and a 40 ft. extension erected the actual boom angle is 66 degrees. While lifting the load from the extension. The load chart for the extension has a capacity at 66.9 degrees and one at 64.8 degrees. Which angle will you use to find the gross capacity?
a. 64.8 degrees
If the horn on the crane you're running quits working what should you do?
a. Nothing as horn is not required b. Stop using crane until alternative measures are implemented c. Stop crane until horn is repaired d. Keep running crane and implement alternative measure
A two-block warning feature has________________.
an audible alarm
Proper blocking includes:
. Make sure outrigger pads are 90 degrees to vertical jack.
An operator setting up a crane what should checked?
Access road compaction
When approaching a job site with a crane, your first concern should be__________________.
Access road compaction
On a typical boom truck, what task does the P. T. O perform?
Activate boom and hoist controls
According to OSHA, cabs shall have windows sufficient to give the operator a view of the boom port when the boom is in which position?
All times
Using a telescopic crane and lifting off the jib/extension with the main boom partially extended, you should use ________________to determine gross capacity.
Boom angle
When picking personnel using an approved personnel platform, which of the following is required?
Boom angle indicator
Which condition is present when lifting heavy loads with the boom of a crane?
Boom deflection
Which of the following is required to be on a mobile telescopic boom crane in order to lift a personnel platform?
Boom length indicator
On a typical boom truck, how should you leave the crane overnight?
Fully retracted and stowed
According to OSHA 1926.1412 what person is required to perform the shift inspection?
Competent
Who must determine maximum speed at a job site for mobile crane to travel with a suspended load?
Competent person
A mobile crane is going to lift a personnel platform, what is required from the list below to be operational on the crane?
Controlled load lowering
Before lifting operations commence, who is responsible for ground preparations?
Controlling entity
Who is required to approve crane set-up according to the B30.5 standard?
Crane operator
When setting up your crane, which one of these should be done?
Cribbing is larger than pad.
What is the maximum amount of wear in the saddle of a hook that is allowed according to the B30.10 standard for load hooks?
DON"T KNOW WHICH ONE IS CORRECT: d. 10%
When traveling a crane under power lines that you may get closer than 20 feet to, what is required?
Dedicated spotter
When using a non-standard attachment on a crane what should be done?
Deducted from net capacity
According to the ASME B30.5 what person is required to perform the frequent inspection?
Designated
A work area chart is used to:
Determine what quadrant of operations you may be working in (front, side, or rear).
An anti-two-block device is a __________________.
Device when activated disengages all crane functions whose movements can cause two-blocking.
What does D/d ratio refer to in rigging?
Diameter of the load divided by the diameter of the sling.
When lifting off the main boom, how is the effective weight of the jib/extension different in the erected position opposed to the stowed position?
Effective weight increases
What is considered working over the front of a truck mounted crane, working from the centerline of the crane?
Everything in front of the front tires
What would be the effect of hoisting a load at high speed?
Increased dynamic loads
While using a two leg bridle if working with a 30 degree horizontal sling angle as opposed to a 60 degree horizontal sling angle.
Increased tension
What is the function of a load indicator?
Indicates actual load weight
According to OSHA 1926.1401, a drum rotation indicator means a device on a crane or hoist which:
Indicates which direction a speed a particular hoist drum is turning
When using a two leg bridle changing from a 30 degree to a 60 degree sling angle, what will happen to the sling tension?
Less tension
When setting up your crane on uneven ground, what is most important?
Make sure outrigger pads are at right angles to the vertical jack.
As used in the 1926 subpart CC, the term must is:
Mandatory
If the anti-two-block device on the crane you are running quits working, what would be your best option for continued use of the crane?
Mark the hoist cable for operator to see so he won't two-block
When hoisting personnel what is required?
Must have A2B system
When is it NOT necessary to perform a trial lift for personnel platform use?
New personnel working in platform
While operating a truck mounted crane and swinging a load from over the side to the front, what would be the greatest danger?
No capacity over the front
When the jib is installed on the crane you are running but is not being used, what is the deduction for the rope running up the back of the boom and jib?
No deduction
Jib or extension capacities are generally based on?
Radius
Which of the following does not need to be done prior to hoisting personnel?
Reduction of 25% applied to the load/capacity chart.
When hooking and un-hooking a load in the fall zone, which of the following is required?
Self-latching hook
When performing pick and carry operations what is the maximum speed what is the maximum speed?
Set by manufacturer
When calculating load chart what is the amount of wire rope that needs to be deducted?
Set by the manufacturer
What would be a good indication you have core damage while using rotation resistant wire rope?
Shinny wires on outside diameter rope
In what quadrant or area of operations would cause the greatest outrigger loading?
Side
All slings for rigging they must have?
Sling identification
While interpreting the load chart on your crane you find the crane's gross capacity is higher than the capacity of the hoist, in this situation you should?
Use gross capacity in load chart minus all deductions.
When picking a piece of I-beam what is the best way to protect your cable slings?
Use split pipe on edges
If your length indicator on the crane you are running quits working, what would be your best option for continued use of the crane?
Use the quadrant and angle chart to determine boom length
Crane stability or tipping is based on?
WHICH ONE? a. Leverage
According to the 1926 subpart CC, a monthly inspection is __________________.
WHICH ONE? a. a shift inspection b. a documented shift inspection c. an annual inspection performed by a competent person d. a documented annual inspection
If the power lines are de-energized who can verify this?
WHICH: Line owner
When is a drum rotation indicator required on cranes built after November 8, 2011?
WHICH? When a L.M.I system is installed on the crane.
Tools, oil cans, waste, and other necessary articles shall:
WHICH? be stored in a box behind the seat
A crane set up that is within 1% level if the crane has 200' of boom out at a high boom angle the load line will be no greater than how far off the center line of the boom?
WHICH? a. 24" b. 1 foot c. 2.5 feet d. 18"
When using preformed IWRC wire rope and connecting wedge socket directly to the hook and ball assembly, what could the affect be?
WHICH? a. Rotation of the load b. Failure of ball assembly c. Failure of sheave d. Failure of rigging
Where should power line warnings be located at on the crane?
WHICH? a. Visible from entire site b. At operator's eye level c. In the cab and outside of crane d. In the operators manual
When using a boom attached personnel platform, when is it acceptable for occupants not to use safety harnesses?
When working over water
When using an auxiliary boom point what else should be used?
Whip line
When are you allowed to rerate the capacity of your crane?
With manufacturer approval
What is the crane's capacity load chart based on?
Working Load