MASS HOISTING 2A+1B EXAM | QUESTIONS AND ANSWERS |
VERIFIED ANSWERS | LATEST EXAM UPDATE
When working in a 4-foot trench, there must be an exit within how many
feet of a worker?
25 feet
The swing gear assembly performs what function?
Attaches the carboy to the mainframe.
Where are the carrier-rollers attached on a crawler excavator?
On top of the track frames.
When should a walk around procedure be done?
Prior to starting the machine.
Where should the drive sprockets be positioned when the crawler excavator
is in the digging position?
In the back/rear.
The minimum distance that the spoil pile shall be placed away from an
excavation is?
2 feet
The angle that material will rest in a pile without slipping, is called?
Angle of repose.
Who should give the operator hand signals?
A designated AND trained signal person.
When backfilling, the material should be put back in the excavation in _?_.
Lifts
Before lifting a load with an excavator, what should the operator do?
Do calculations to determine if it is within the capacity of the machine.
What slope angle is considered safe for ALMOST any type of excavation
material?
,34 degrees.
According to OSHA, _?_ must inspect all excavations before employees are
allowed to enter.
the competent person
When approaching a marked utility line with an excavator, what procedure
should be used to locate the utility?
Stop using mechanical equipment and search for the utility by hand.
Back filling operations for excavations and trenches....?
may impose severe stress on the sides of the excavation.
An agency who will notify utilities of an excavation needing to be marked
out is called?
Dig Safe
A construction machine equipped with air brakes should do what to
prevent moisture buildup?
Drain air tank(s) daily.
On a combination loader/backhoe, during backhoe operation, how far
should the stabilizers be lowered?
They should be lowered only enough to level the machine with a minimum
clearance under the tire.
When operating the backhoe of a combination loader/backhoe, what
position should the FRONT bucket be in?
It should be lowered in the dig position to take the weight off the front
tires/wheels.
Where is the information on Daily Required Inspection and Maintenance for
your machine found?
In the operator manual for the machine.
When working on slopes with a rubber tire loader, which position affords
maximum stability.
Up and down the slope with the loaded bucket facing uphill going down,
and facing uphill going up.
How would the lifting capacity of an excavator or backhoe be determined?
, By consulting the operators manual for the particular machine in question.
Before performing service operations on a loader/backhoe or leaving the
machine unattended, the operator should...?
Lower the loader lift arms to the ground and block them securely.
When describing slope as a ratio such as (3:1), the number to the right of
the colon represents what?
Vertical height.
The steepest incline of an excavation face that is acceptable as protection
against cave-ins is called?
Maximum allowable slope.
A method of protection for employees from cave-ins by forming inclined
sides to the excavation is called what?
Sloping
When installing pipe in a trench exaction, when is it permitted for an
employee to go under a suspended load?
Never
Where shall the hand signals for the machine in use be posted?
On the jobsite.
Where is it best to connect slings to lift boom sections?
End fittings.
All manufacturers load charts and operation manuals shall be kept in/on?
The machine.
Wire rope used as running rope for hoisting should be taken out of service
when...?
there are six randomly distributed broken wires in one rope lay OR three
broken wires in one strand in one rope lay.
What is the MAJOR reason for mobile crane accidents?
Improper crane set-up.
What happens to the jib capacity as the jib angle to the ground increases?
Increases.
VERIFIED ANSWERS | LATEST EXAM UPDATE
When working in a 4-foot trench, there must be an exit within how many
feet of a worker?
25 feet
The swing gear assembly performs what function?
Attaches the carboy to the mainframe.
Where are the carrier-rollers attached on a crawler excavator?
On top of the track frames.
When should a walk around procedure be done?
Prior to starting the machine.
Where should the drive sprockets be positioned when the crawler excavator
is in the digging position?
In the back/rear.
The minimum distance that the spoil pile shall be placed away from an
excavation is?
2 feet
The angle that material will rest in a pile without slipping, is called?
Angle of repose.
Who should give the operator hand signals?
A designated AND trained signal person.
When backfilling, the material should be put back in the excavation in _?_.
Lifts
Before lifting a load with an excavator, what should the operator do?
Do calculations to determine if it is within the capacity of the machine.
What slope angle is considered safe for ALMOST any type of excavation
material?
,34 degrees.
According to OSHA, _?_ must inspect all excavations before employees are
allowed to enter.
the competent person
When approaching a marked utility line with an excavator, what procedure
should be used to locate the utility?
Stop using mechanical equipment and search for the utility by hand.
Back filling operations for excavations and trenches....?
may impose severe stress on the sides of the excavation.
An agency who will notify utilities of an excavation needing to be marked
out is called?
Dig Safe
A construction machine equipped with air brakes should do what to
prevent moisture buildup?
Drain air tank(s) daily.
On a combination loader/backhoe, during backhoe operation, how far
should the stabilizers be lowered?
They should be lowered only enough to level the machine with a minimum
clearance under the tire.
When operating the backhoe of a combination loader/backhoe, what
position should the FRONT bucket be in?
It should be lowered in the dig position to take the weight off the front
tires/wheels.
Where is the information on Daily Required Inspection and Maintenance for
your machine found?
In the operator manual for the machine.
When working on slopes with a rubber tire loader, which position affords
maximum stability.
Up and down the slope with the loaded bucket facing uphill going down,
and facing uphill going up.
How would the lifting capacity of an excavator or backhoe be determined?
, By consulting the operators manual for the particular machine in question.
Before performing service operations on a loader/backhoe or leaving the
machine unattended, the operator should...?
Lower the loader lift arms to the ground and block them securely.
When describing slope as a ratio such as (3:1), the number to the right of
the colon represents what?
Vertical height.
The steepest incline of an excavation face that is acceptable as protection
against cave-ins is called?
Maximum allowable slope.
A method of protection for employees from cave-ins by forming inclined
sides to the excavation is called what?
Sloping
When installing pipe in a trench exaction, when is it permitted for an
employee to go under a suspended load?
Never
Where shall the hand signals for the machine in use be posted?
On the jobsite.
Where is it best to connect slings to lift boom sections?
End fittings.
All manufacturers load charts and operation manuals shall be kept in/on?
The machine.
Wire rope used as running rope for hoisting should be taken out of service
when...?
there are six randomly distributed broken wires in one rope lay OR three
broken wires in one strand in one rope lay.
What is the MAJOR reason for mobile crane accidents?
Improper crane set-up.
What happens to the jib capacity as the jib angle to the ground increases?
Increases.
