Lattice

Question 1

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

Answer 1

Power load-lowering and foot brake

Question 2

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

Answer 2

Lower pins ahead of the equalizer.

Question 3

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

Answer 3

10ft section

Question 4

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

Answer 4

Cantilever Length

Question 5

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

Answer 5

Master Clutch

Question 6

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

Answer 6

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

Question 7

Where is boom length measured on a LBC?

Answer 7

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

Question 8

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

Answer 8

Highest point

Question 9

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

Answer 9

NEVER

Question 10

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

Answer 10

At pin connection points at the end of the chords.

Question 11

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

Answer 11

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

Question 12

How do you install boom pins?

Answer 12

Inside out. Pins pointing out.

Question 13

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

Answer 13

Decreases capacity

Question 14

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

Answer 14

75%

Question 15

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

Answer 15

Increase the crane’s stability

Question 16

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

Answer 16

Track rollers

Question 17

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

Answer 17

75%

Question 18

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

Answer 18

Outrigger position monitor

Question 19

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

Answer 19

85%

Question 20

When do you use a Rubber Chart?

Answer 20

When the wheels still bear machine weight.

Question 21

LBC least stable position?

Answer 21

Side

Question 22

LBC truck crane greatest capacity quadrant?

Answer 22

Rear

Question 23

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

Answer 23

Make visual contact with beam and jack.

Question 24

LBC max ground pressure position?

Answer 24

Over the corner

Question 25

Wood mats work best when?

Answer 25

When bolted together

Question 26

Crane configuration depends on what?

Answer 26

Site conditions

Question 27

Where do you find assembly and disassembly specs and guidelines?

Answer 27

Operator’s manual

Question 28

When assembling and disassembling, suspension ropes should not what?

Answer 28

Interfere with pins and clips

Question 29

Bent or damaged fittings cannot what?

Answer 29

Fit boom sections together

Question 30

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

Answer 30

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

Question 31

Where do you find information on the assembly components?

Answer 31

Boom rigging drawing

Question 32

When does most boom damage happen?

Answer 32

During transportation and handling.

Question 33

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

Answer 33

The ground pressure increases

Question 34

How many are in a Pendant matched set?

Answer 34

4

Question 35

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

Answer 35

Boom angle indicator

Question 36

The crane operator and assemblers must have?

Answer 36

A way to communicate

Question 37

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

Answer 37

Additional counterweights

Question 38

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

Answer 38

False. Specific pins.

Question 39

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

Answer 39

Coiled in the drum.

Question 40

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

Answer 40

Mast

Question 41

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

Answer 41

Boom hoist cable

Question 42

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

Answer 42

Boom is assembled.

Question 43

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

Answer 43

Closer to the crane than the load

Question 44

Who is responsible for identifying unground hazards?

Answer 44

Controlling entity

Question 45

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

Answer 45

Ground conditions

Question 46

Which of the following operator aids is associated with LMI?

Answer 46

Selected controls lockout system

Question 47

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

Answer 47

10 degrees

Question 48

Who determines successful proof test?

Answer 48

Competent person

Question 49

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

Answer 49

Operator

Question 50

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

Answer 50

The swing radius of the rear of the rotating superstructure