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Lattice > Lattice > Flashcards

Lattice Flashcards

1
Q

On LBC with power load lowering mounted on the hoist, a heavy load should be lowered by what function?

A

Power load-lowering and foot brake

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2
Q

A pin-connected LBC is being dismantled, after connecting the equalizer, which pins should be removed first?

A

Lower pins ahead of the equalizer.

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3
Q

When assembling a LBC, which insert should be closet to the butt section?

A

10ft section

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4
Q

What is the term used for the length of the LBC boom that is suspended?

A

Cantilever Length

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5
Q

On a friction style mobile crane, how is power transferred to the torque converter?

A

Master Clutch

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6
Q

When disassembling or shortening a LBC, which pins shouldn’t be touched?

A

Any pin on any section located between the pendant attachment points and the crane.

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7
Q

Where is boom length measured on a LBC?

A

Center of the heel pins to the center of the tip sheave pins.

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8
Q

How should a gantry of a LBC be positioned when hoisting a suspended load?

A

Highest point

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9
Q

When assembling and disassembling a LBC, when is it safe to work under the boom?

A

NEVER

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10
Q

When handling boom sections, where is the best location for slings to be attached?

A

At pin connection points at the end of the chords.

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11
Q

Booms being assembled or disassembled on the ground without a harness should be what?

A

Securely blocked to prevent dropping of the boom and boom sections.

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12
Q

How do you install boom pins?

A

Inside out. Pins pointing out.

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13
Q

What effect does having crawlers retracted have on a mobile crawler crane?

A

Decreases capacity

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14
Q

Tipping capacity of a LBC crawler is based on what percentage?

A

75%

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15
Q

Approved blocking placed under the tips of the tracks on a mobile crawler crane will do what?

A

Increase the crane’s stability

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16
Q

The tipping axis over the side on most LBC crawler is generally in lines with what component?

A

Track rollers

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17
Q

When operating on tires, LBC truck cranes are rated at what percentage of tipping?

A

75%

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18
Q

LBC truck crane manufactured after 11/8/2011 must have what?

A

Outrigger position monitor

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19
Q

A LBC truck crane, with outriggers properly set is rated at what percentage of its tipping capacity?

A

85%

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20
Q

When do you use a Rubber Chart?

A

When the wheels still bear machine weight.

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21
Q

LBC least stable position?

A

Side

22
Q

LBC truck crane greatest capacity quadrant?

A

Rear

23
Q

When extending outriggers, what should the operator do from the cab?

A

Make visual contact with beam and jack.

24
Q

LBC max ground pressure position?

A

Over the corner

25
Q

Wood mats work best when?

A

When bolted together

26
Q

Crane configuration depends on what?

A

Site conditions

27
Q

Where do you find assembly and disassembly specs and guidelines?

A

Operator’s manual

28
Q

When assembling and disassembling, suspension ropes should not what?

A

Interfere with pins and clips

29
Q

Bent or damaged fittings cannot what?

A

Fit boom sections together

30
Q

What type slings are best for assembling and disassembling? Where should you attach the slings?

A

Nylon slings. Lifting lugs, main chords, not the laces.

31
Q

Where do you find information on the assembly components?

A

Boom rigging drawing

32
Q

When does most boom damage happen?

A

During transportation and handling.

33
Q

What happens when a LBC crawler is moved from soft to hard ground?

A

The ground pressure increases

34
Q

How many are in a Pendant matched set?

A

4

35
Q

What do you attach after the main hoist line and boom assembly?

A

Boom angle indicator

36
Q

The crane operator and assemblers must have?

A

A way to communicate

37
Q

In order to lift a longer boom off the ground it may be necessary to install _____ on the crane.

A

Additional counterweights

38
Q

A pin/fastener can be used to assemble the boom as long as they’re secured by cotter pins. True or False?

A

False. Specific pins.

39
Q

Before assembly, suspension ropes and pendants should be in good condition and _____.

A

Coiled in the drum.

40
Q

A frame hinged at or near the boom hinge for use in supporting a boom is called a boom _____

A

Mast

41
Q

A thorough inspection of ____ should be made before booming up.

A

Boom hoist cable

42
Q

In the Jib assembly, the jib is assembled and attached to the lattice boom tip after the ____

A

Boom is assembled.

43
Q

To utilize boom deflection, when lifting a heavy load off the ground. The boom tip should be ____

A

Closer to the crane than the load

44
Q

Who is responsible for identifying unground hazards?

A

Controlling entity

45
Q

_____ including blocking/cribbing must be checked around the crane for proper support.

A

Ground conditions

46
Q

Which of the following operator aids is associated with LMI?

A

Selected controls lockout system

47
Q

The system used to connect the personnel platform to the equipment must allow the platform to remain ____ degrees of level, regardless of boom angle.

A

10 degrees

48
Q

Who determines successful proof test?

A

Competent person

49
Q

Who is responsible to know what type of site conditions could adversely affect operations of the crane?

A

Operator

50
Q

According to OSHA, accessible areas of the operating crane must always be barricades within:

A

The swing radius of the rear of the rotating superstructure

Lattice (1 decks)

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