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WorksheetsCrane theory Final
Total questions: 150
Worksheet time: 1hrs 15mins
On truck mounted cranes, during a pre-operational inspection, check the tires for?
Proper size and type
Proper inflation
Damage and tread wear
All of the above
The regulations governing crane operations are?
29 CFR - 1910.180 and 1926.1400
PCSA
ASME B-30.5
All of the above
Federal regulations state, when must a frequent inspection take place?
During the beginning of the day
Very frequently
At the beginning of each shift
When you suspect a saftey hazard exists
Boom point sheaves?
Should turn freely by hand
Must have sheave guards in place
Shall be free of defects or damage
All the above
Damaged lacings shall be replaced?
At the end of the shift
Prior to continuing operation
After hoisting operation is completed
At the earliest convenience
An outrigger assembly consists of?
The beam arm and pads
Pads, plates, and jacks
Beams, jacks, and pads
Floats, Beams, and carbody
Inspection of a hydraulic hose should be done by?
Moving the hose from side to side
Visually with a piece of cardboard
Tapping on all the fittings
All the above
The most critical elements of a turntable inspection are?
The integrity of the welds, slewing ring gear, and lubrication
Hard faced surfacing, hook rollers, and center pin
Idler, pins, and housing
Rods and ties
Conventional booms are made up of the following?
Main beams and cross supports
Rods and beams
Chords and lacings
Rods and ties
According to Fed. Regulations, all control mechanisms must be inspected for operation and adjustment?
After each shift
At the start of each shift
Once a week
Once a month
According to regulations, leaver operated controls shall be equipped with a mechanism that will?
Keep the leaver free of grease and dirt
Return the leaver to the neutral position whenever it is released
Allow continued ease of operation
Lock the leaver in place
All cranes shall be equipped with an audible device that?
Is controlled by the operator
Can be heard everywhere on the job site
Could be turned off if necessary
Controlled by the ground personnel
All crane capacities are based on the?
Load center of gravity
Principle of leverage
Safe working load
Maximum line pull
When referencing weight, distance, and lever or arm, what are we looking for?
Angle factor
Net load
Load moment
Maximum radius
When an "incorporation by reference" is acted upon, the written material becomes a?
Guideline
Good consideration
Law
Publication of the manufacture
Running wire rope shall be inspected?
By crane manufactures recommendations
When it is over a year old
As the wire rope manufacture recommends
As stated in 29 CFR 1926.143
According to Fed OSHA, who can preform the daily crane inspection?
Supervisor
Competent person
Crane oiler
Qualified person
All hazards and potential problems should be discovered during the?
Pre-shift inspection
Actual lift
Daily safety meeting
Pre-lift inspection
Upon who's recommendation should a preventative maintenance program be set-up?
Master mechanic
Crane operator
Company supervisor
Crane manufacture
If a machine has been taken out of service, there shall be a ?
Do not operate tag placed in the cab
Battery disconnection
Person guarding it from being operated
Disabled from being operated
A crane may be assembled or disassembled when?
The mechanic is involved
A competent person who is acting alone
After the superintendent has given you permission
An A/D director is guiding the operation
A net load is?
The weight of the object you are lifting
A sum of the weight of the load and attachments
A load suspended in a rigging net
The weight of the load, rigging, and load block
A gross load is?
The weight of the object you are lifting
A sum of the weight of the load and all the attachments
A load suspended in a rigging net
The weight of the load, rigging, and load block
The use of a fixed jib is to?
Increase the reach
Be able to lift heavier loads
Change the cranes capacity
Obtain a higher boom point elevation
On a conventional crane, Power is transferred from the power plant to the clutch and power shaft via the?
Throttle increasing the engine RPMs
Drum brake band
Gear or chain transfer case
Engagement of the drum or component clutch
On a hydraulic crane, hydraulic pressure is directly created by the hydraulic?
Valve
Pump
Size of hydraulic cylinder or motor
Leaver displacement by the operator
On a conventional crane the load is primarily held suspended by the?
Operator
Drum brake
Torque converter
Leaver being placed back into the neutral positon
The definition of a stowed jib on a hydraulic crane is?
The jib cribbed up on the ground in a safe location
It is erected on the crane but not in use
Erected and being used
Located and pined to the base section of the boom
A dynamic load suspended by a crane makes it?
Feel heavier than the load weighs
Lose balance while it is being flown to another location
Remain steady in one location
Move faster than what is necessary
According to Federal regulations, a monthly inspection must be documented and retained for how long?
One month
Three years
Three months
One year
Regulation's state where manufactures procedures for safe operation of the crane or attachment do not exist, the employer must?
Ensure the project remains and productive
Ensure the developed procedure is safe and in compliance with state, fed, and ASME
Use an assist crane for safe assembly & disassembly of the crane
State Fed and ASME will not allow operation of a crane without manufactures procedure
The A/D director shall?
Operate the crane in a safe manner
Use the tagline to control the load
Inform the crew of their task and hazards
Use a dedicated spotter to ensure safe operations
Can the crane owner be responsible for the site operation?
Yes, if they are the controlling entity
Only the site supervisor is responsible
It is the operators responsibility to prepare the site
The loader operator is responsible for site preperation
Crane operators are responsible for being aware of changing condtions?
Of the management teams and requirements
Of other cranes across the project
That will affect the overall production of the project
That could affect the safe operation of the crane
All rotation resistant wire rope is good for use on?
Boom hoist line
A single part whip line
Wire rope rigging
Multi part reeving
A 6X19 classification EIPS, IWRC, wire rope is
Rotation resistant wire rope with an independent wire core
19 Strands with 6 wires and a wire strand core
Regular lay wire rope hoist line
Extra improved fiber core rigging wire rope
What kind of wire rope has its stands laid in one direction and the wires appear to run diagonally across the rope?
Lang lay
Alternate lay
Regular lay
Six strand herringbone
What kind of wire rope has its outer strands laid in one direction and the inner strands lain in the opposite direction?
Alternate lay
Regular lay
Herringbone
Rotation resistant
Regular lay wire rope is made in such a way that it has its?
Wires and strands wrapped in the same direction
Strands and wires are wrapped in the opposite direction
Wires are wrapped tighter than the strands
Inner layers are opposite of its outer
Rotation resistant will have more stress on the?
Inner strands
Inner and outer will gain tension equally
Outer strands
Drum when it is being wrapped
The crane must be level within?
One degree
Two percent
Five degrees
One percent
If the cranes tracks are twenty feed wide, the left track is 0.15' lower than the right track, is the crane level enough to operate?
I don't know
No
Yes
Yes, at a reduced capacity
If the ground is soft, or underground utilities exist, the?
Ground may not support the crane
Crane is designed to work in those condtions
Tracks will distribute the weight of the crane
Weight of the crane will compact the ground
If the crawler tracks are 30 feet 9 inches long, what would be the maximum difference in elevation from one end to the other at 1%?
3-3.75'
0'
0.3075'
1.5'
What is the removal criteria for a 6X19 IWRC Running wire rope?
Three randomly broken wires in six rope diameters
Six broken wires in one strand in one rope lay
Six randomly broken and three in one strand in one lay
Three broken wires in one strand and four randomly broken wires in one lay
What is the minimum amount the drum flange must extend above the last layer of wire rope?
One half of an inch
Two to two and a half inches
As close to the top as possible
Four inches is the maximum
What is the maximum fleet angle of a grooved drum?
Ten feet
Zero degrees
Five percent
Two degrees
What is the ratio of the fleet angle of a smooth drum?
Ten to one
Two degrees
Forty to one
The less the better
On rotation resistant wire rope, what is the proper removal criteria?
Four broken wires in six rope diameters and two in thirty diameters
In thirty rope diameters, four broken wires, and two in six diameters
Three percent wear of the outer wires
Rotation resistant wire rope can't have any broken wires
If on good ground, the minimum size cribbing under the outrigger float should be?
Three times the size
Evenly spaced for distribution
Three times the area
A little flexible
When working the crane on outriggers over the 360-degree working area chart?
The distance will continually change
Outrigger pressure will be highest over the corner
Pressure will change the outrigger elevation
Pressure will remain the same
Any cribbing used under the outrigger float shall be?
Free of defects, strong enough, and large enough to prevent crushing and toppling
Any kind and condition of lumber that will fit neatly under the outrigger float
Made of plywood with 2X4's placed under the outrigger float
Evenly spaced from each other to distribute outrigger pressure evenly
The proper clearance between the cranes counterweight and a building shall be?
Far enough away for one person to fit between them
At least two feet of clearance
A minimum of three feet
Far enough away so the crane doesn't hit the building
The outrigger on a crane shall be set so they can?
Support the crane and increase ground stability
To add stability to the cranes boom from toppling over backward
Keep the crane level and tires free of supporting surface
Increase supporting ability by somewhat compacting the ground
The A/D director must?
Assemble the crane as the components arrive on site
Inspect each component to ensure it is not damaged
Do the rigging on each component
Inspect the assist crane before assembly
When setting up the crane, the outrigger floats must be?
90 degrees to the jack
Within 5%
At 1%
Designed to adjust to the ground as needed
A crane that is out of level by 3 degrees?
Increase the cranes capacity by 50%
Will be more affective over the uphill side
Can decrease by 20% on the low side and increase 30% on the high side
Could cause a 50% reduction in capactiy
As the crane swings around a 360 degree, it is ok for your angle indicator to change no more than?
1 degree
0.7 degrees
0.5 degrees
0.4 degrees
If the crane's outrigger floats are 24" in diameter, and using the rule of thumb, what would be the minimum size of your cribbing blocks that you would have to place under the crane?
41" X 41"
35.5" X 35.5"
36" X 36"
37" X 37"
The crane operator can?
Make the lift as soon as the rigger gives the cable up signal
Be held responsible for a crane accident if knowing it is unsafe
Lift any load that is rigged to the hook
Consult the load chart of a different crane of the same model number
When working near power lines, a dedicated spotter shall be required?
If there are power lines on the job
When the operator can see barricades or warning signs
Where the operating radius can breach the prohibited zone
Only when the machine is swinging in the direction of the power lines
You are operating a crane near an energized 56 kv power line, how many feet away is the prohibited zone?
20'
10'
12'
15'
If your crane strikes a power line, what should be the first thing you would do?
Order everyone to stay where they are
Escape by jumping off the machine and hop away to safety
Stay in place and wait for the power company to say it's safe
Try to reverse whatever action caused the crane to make contact
When using a proximity or a range limiting device, while working around power lines?
A signal person is required at all times during crane operations
No signal person is required at the prohibited zone
Someone needs to operate the proximity locating device
There needs to be a signal person if the crane can come within 20 feet of the power line
What is the number one cause of serious accident and death with cranes?
Improper use of outriggers
Crane tip over
Structure boom failure
Electrocution
If a crane comes into momentary contact with a power line, it should be inspected
prior to continuing operations
at the end of the shift
when the lift is completed
when the person in charge of the lift deems it necessary
According to the Fed Regs, what is the minimum clearance while traveling under a 47 kv power line?
4'
6'
10'
20'
On the cranes hook you notice the throat is slightly opened a little bit, what is the removal criteria?
0.125", 1/8"
3%
0.375", 3/8"
5%
The minimum D/d ratio of a boom hoist drum is?
1:1
16:1
15:1
18:1
If standing on the ground near a crane that's in contact with a power line, you should?
stay where you are
run to a safe area
shuffle step away
keep others from touching the crane
When should the operator escape from the crane if in contact with a power line?
If the power line breaker switches off and resets
As soon as the operator can set the load on the ground
The project manager will tell you if it's safe
When there is no other option left to stay safe
With a D/d ratio of 15:1, the wire rope efficiency is?
75%
85%
90%
95%
A load hoist drum has a D/d ratio of?
18:1
15:1
16:1
18.5:1
A load block has a minimum D/d ratio of?
18:1
16:1
15:1
20:1
How much chain stretch is the maximum allowable percentage?
0%
1%
3%
5%
In order to calcuate parts of line needed to make a lift, you need to know?
Permissible line pull
Safe working load
Gross load
All the above
With permissible line pull (PLP) of 12,000 pounds, what is the minimum parts of line needed to lift 73,675 pounds of suspended weight?
7 parts
8 parts
6 parts
5 parts
What is the differnce between safe working load (SWL) and permissible line pull (PLP)?
SWL divided by PLP
Hoist line working capacity and winch performance
90% of SWL
Line capacity divided by net load
If the wire rope has a breaking strength of 150,000 pounds with a safety factor of five, what would be the Safe Working Load?
20,000
25,000
30,000
35,000
SWL refers to
Single wire lay
Safe working load
Safe wire length
Swing with load
Cranes shall not be operated with wheels or tracks off the ground, unless
the operator is trying to free a load that is stuck
flex in the cranes main frame causes the outrigger to rise slightly off the ground
outriggers are bearing the full weight of the crane
manufacture stats that the wheels should never be off the ground
What factors dictate the size of cribbing that one would place under the outrigger pads?
Weight of the crane and load
Quadrant of operation
Ground Condition
All answers are correct
While lifting a section of boom, the rigging should be placed?
Designated lift points
On the lacings
Around the chords
Under the boom for full support
The cranes counterweight is to be installed?
After installing the boom
Install half of the counterweight, then install the boom, then install the rest of the counterweight
The crane doesn't' need the counterweight to install the boom
Before the boom is installed
For boom assembly and installation, the crane is placed in?
Cantilever on fully extended outriggers
Outriggers are not needed and pendant lines connected to the boom tip
Operating mode
Gantry in lowered position
Load moment refers to
The moment the crane starts to move the load
Force being exerted on the cranes balance
Force being exerted on the ground by the outriggers
The moment the signal person starts to signal the load
Why must the reeving be evenly spread across the main boom tip and block sheaves?
All answers are correct
Torsion of the boom
Block is not balanced
Sheave and cable wear
According to ASME B30.10 a hook can be twisted as much as?
15 degrees
10 degrees
5 degrees
0 degrees
All hardware and chain can have as much as?
5% wear
10% wear
1% wear
0% wear
Your cranes maximum outrigger pressure is 100,000 pounds, the ground supporting capability is 35 PSI, what size cribbing would you use to support the crane from sinking into the ground?
52" X 52"
53.5" X 53.5"
45.5" X 45.5"
48" X 48"
To find the safety factor on running wire rope, you would
Divide net load into rated capacity
Mulitply parts of line into the line pull
Divide breaking strength by safe working load
Consult the capacity chart
No less than _________, wraps of wire rope shall remain on the boom hoist drum when the boom tip is on the ground.
2
3
4
1
On all cranes over five ton, the hoist drum must have a drum pitch diameter of?
15:1
18:1
20:1
16:1
The cranes swing mechanism must be capable of starting and stopping the movement?
Multiple times to control the swing
Quickly in case of an emergency
Smoothly through the swing motion
To control the speed of the hook
The reasoning behind having sheave guards on the boom tip is to?
Protect the wire rope from being damaged
Guide the wire rope back into the sheave groove
Protect the sides and bottom of the sheaves
Direct the cable out of the boom tip
On a hydraulic crane, the boom hoist cylinder must be capable of holding what percent of a rated load without attention from the operator?
90%
100%
110%
120%
What type of signaling device is required by law to be present on the crane?
Flashing red light, or beacon on the boom
Audible
Lights outside the cab indicating overload
An orange and white checkered flag
Cranes used in demolition work shall be recertified before?
Moving onto a construction site
Going back into lift crane service
Before moving the crane off the project
Every year it remains in operation
Suspended loads shall not be left suspended if the operator is not present in the cab of the machine unless
The boom has the boom dog in place
It is suspended over water
Suspended over water AND barricades are placed around it
Barricades are placed around it
A personnel platform may be used to hoist personnel only if?
Conventional means are not possible
All the answers are correct
Other means would be more hazardous
It's not possible because of structural design
Fall protection shall be used by all personnel being hoisted in a personnel platform, except for?
Over water
In windy conditions
Near dangerous structures
All the above
To what percentage must a personnel platform be proof load tested at?
0%
100%
110%
125%
A trial lift shall be performed at each _____ at _____ weight?
Location at 120%
Jobsite at 125%
Location at 50%
Work site at the anticipated
A tag line shall be used unless?
It presents an unsafe condition
You cannot hold the load by hand
The tagline is used to hold material in place
The tag line gets tangled in the structure
The only type of hook that can be used for personnel hoisting is?
Spring loaded
A hook with a swivel
Positive locking
Sorting hook
The number of employees in a personnel platform shall not exceed?
The number of personnel required to do the work
125% of the rated capacity of the platform
The number of personnel required to do the work AND the maximum capacity of the platform
The maximum capacity of the platform
While hoisting personnel in a personnel platform, the cranes capacity must be reduced by?
0%
50%
60%
70%
Cranes lifting personnel platforms shall be equipped with?
A damage prevention anti - 2 - block device
All answers are correct
Boom angle indicator
Boom length indicator
What is the most secure type of rigging hitch for lose material?
Vertical
Basket
Double wrapped choker
Double wrapped basket
Braded wire rope slings mus?
Have a reduced capacity
Use a safety factor of 3.5 built into them
Be designed with forty times the rope diameter between eyes
Not be used in a choker configuration
If your sling leg length is 10.331 feet long and your hook height is 7.305 feet high, and your load weight is 23,621 pounds, what would be your angle factor and sling leg tension for two legs?
1.333 and 15,348
1.755 and 17,334
1.155 and 14,635
1.414 and 16,700
If your sling leg length is 10.331 feet long and your hook height is 7.305 feet high and your load weight is 23,621 pounds, what would be the minimum diameter sling you can safely use on two legs of rigging?
1 1/8 inch = 12 tons
1 inch = 9.8 tons
7/8 inch = 7.6 tons
3/4 inch = 5.6 tons
When lifting with chain slings?
They must be tagged with size, grade, and capacity
All fittings must be at least equal capacity of sling leg
Chain must have a proof load test of double sling capacity
All the above
According to the FED and ASME, wire rope slings must be taken out of service when there is?
One wire in any strand is broken, or two wires are broken in any lay length
Three wires in any strand are broken, or four wires are broken in one lay length
Two broken wires in three rope diameters, or five broken wires in twenty rope diameters
Ten randomly broken wires in one rope lay, or five broken wires in one strand in one lay
Hitches, in order from strongest to weakest, if using proper D/d ratio are?
Vertical, choker, basket
Choker, vertical, basket
Basket, vertical, choker
Basket, choker, vertical
What precautions must be taken while cutting rotation resistant wire rope?
Use only a carborundum saw to make a clean cut
Must have a hydraulic cable cutter because of extrema amount of force needed
Shall be sized in two places before cut point so internal core slippage don't happen
The end must be melted with an acetylene torch and peened for proper end termination
What type of wire rope core would be more susceptible to drum crushing?
Independent Wire Rope Core
Wire Strand Core
Fiber Core
Right Regular Lay
When using screw pin anchor shackle?
Place the pin in the hook or sling eye
Place the pin on the body of the sling
Can be choked sideways to prevent nylons from being bunched up
Screw the pin all the way in, and back it out a 1/4 turn
A synthetic sling must have?
A red thread damage indicator
An expiration date indicating a specific working life
Manufactures ID, length, and capacity for type of hitch
The cranes equipment number on it for identification
What is the minimum safety factor that is used for chain?
3:1
3.5:1
4:1
5:1
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
What is the total amount of counterweight that is on this machine?
249,200
369,200
500,000
249,200 and 369,200
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
What percentage of static tipping load is this crawler based upon?
75%
80%
85%
It depends if the outriggers are being used
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
What is the maximum amount of line pull?
3,000
25,000
30,000
60,000
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
With 300 feet of boom, is it possible to lay the boom down to the ground over the side?
Yes, with an assist crane
No, it can only be laid down over the front with the crawlers blocked
All the above
Yes, if all of the sheaves have been removed, except form the middle three
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
With 250 feet of main boom at 75º and a 40-foot jib with a 5º offset, is there a backward stability problem?
It's required to have 4,425 pound block and a four-part line
There are no backward stability issues with the crane
It needs to have a 4,425 pound block and three parts of line
There is no allowance for placing a load block on the jib
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
If the crane has 80 feet of main boom, is it possible to boom down low enough to walk the crane under 10,000 volt power line 35 feet high?
No, the gantry is too high
No, the gantry is too high AND the book tip is too high
The boom tip is too high
Yes, if the power company has deenergized the powerline
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 feet of main boom, 40 foot jib with a 15º offset, 125 foot radius
What is the boom angle in degrees?
65.5º
65.7º
66.7º
67.9º
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 feet of main boom, 40 foot jib with a 15º offset, 125 foot radius
What is the manufactures rated capacity?
65,000 pounds
60,000 pounds
61,300 pounds
61,600 pounds
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 feet of main boom, 40 foot jib with a 15º offset, 125 foot radius
With four parts of line, what is the maximum capacity?
60,000 pounds
90,000 pounds
120,000 pounds
140,000 pounds
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
What type of sheaves does the gantry have?
Carbon fiber
Metal
Heavy duty composite
Polymide type
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
Using 1 1/8 inch wire rope with a 30,000 pound maximum line pull and a safety factor of four, what type of wire rope would you use?
6 X 19 F.C. IPS Regular lay
6 X 3.7 IWRC, E.I.P.S., Regular lay
19 X 7 Rotation resistant wire rope
Samson, Synthetic hoist line
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
Using 150 foot of main boom and a 40 foot jib, with 115 foot radius, what jib offset will provide the best capacity?
0º
5º
15º
30º
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
Using 150 foot of main boom and a 40 foot jib, and a 30º offset, will the crane lift 1,200 pounds at a 153 foot radius?
Yes, it's very little weight compared ot what the crane can lift
The crane can lift 38,100 pounds at 150 feet
It can be done if the tracks are blocked up
Manufacturer FED and ASME says no
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 foot of main boom
A building is 140 feet tall. The air conditioner unit is going 30 feet inside the edge of the building and the toe of the track is 74.625 feet away from the building.
How far is the center pin away from the building?
30 feet
90 feet
120 feet
150 feet
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 foot of main boom
What is the maximum obtainable radius?
110 feet
115 feet
117 feet
120 feet
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 foot of main boom
What would be the maximum gross load weight
65,700
57,800
58,700
54,300
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 foot of main boom
What is the minimum allowable boom angle?
59.7º
61.2º
62.6º
58.3º
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 foot of main boom
What is the cranes boom tip elevation above ground?
208.1 feet
210.8 feet
205.1 feet
213.4 feet
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 foot of main boom
How much head room does the crane have above the building?
68.1 feet
208.1 feet
70.4 feet
65.5 feet
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 foot of main boom
What section of the load capacity chart is the gross capacity located in?
Structural
75% of chart
Tipping
Overload
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 foot of main boom
What is the minimum parts of line that would be needed to make the lift?
1
3
4
2
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 foot of main boom
The crane is equipped with minimum parts of line to make the lift. It has a 60-ton block weighing 2,825 lbs. Using 29mm wire rope, an upper boom point, and 15 ton hook and weight ball hanging 20 feet below upper boom point, 1-1/8 inch wire rope
What is the cranes total deductions?
10,225
6,245.17
71810.25
5,500.2
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
230 foot of main boom
How much can the maximum net weight of the air conditioner weigh?
52,454.83 pounds
58,700.25 pounds
50,278.75 pounds
61,200.31 pounds
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
What is the cranes maximum obtianable boom and jib length?
370 feeet
340 feet
365 feet
380 feet
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
Determine what this cranes D/d ratio is using the 24.5 inch hoist drum with a 1-1/8 inch hoist line
18 : 1
20 : 1
21.7 : 1
22.3 : 1
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
When it comes to the hoist line deductions, on this crane, use only?
Excessive reeving (anything over minimal)
Below ground level reeving
Part of line correctly reeved with minimal parts
All the cable going over the boom tip sheaves
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
On this crane, if the jib is installed along with the upper body boom point?
Deductions must be made for the upper boom point
The manufacture has already accounted for the upper boom point
The upper boom point and jib cannot be installed at the same time
A two-part line can be used on the upper boom point
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
What is the optimal boom length and angle for a maximum pick with a 100 foot radius?
130 feet and an angle of 45.3º
10 feet and an angle of 40.2º
150 feet and an angle of 52.6º
140 feet and an angle of 49.3º
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
How many feet of approximate boom deflection is shown between the load chart and range diagram with 300 feet of boom and 60º angle and 32,400 pound load?
10 feet of deflection
5 feet of deflection
3 feet of deflection
0 feet of deflection
Based on the Manitowoc 2250 Series 3; 330 Ton Crawler Crane
On the cranes load chart, what does the asterisk stand for?
Tipping chart
Structural chart
Safe working load chart
75% of the chart is used
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