EICA Mobile Crane & Digger Derrick Test with 100%
Correct Answers | Latest Update 2026/2027 |
Graded A+ | 100% Pass.
If not overloaded, the ground bearing pressure of a single outrigger pad can approach a
weight equal to:
85% of the weight of the crane and 100% of the suspended load
If you move a crawler crane from soft ground to harder ground, ground bearing pressure will
increase
On a crawler crane, ground bearing pressure is greatest when hoisting where?
over the corner
If an outrigger pad has 45,000 pounds applied to it and the pad measures 2ft x 2ft how many
psi is it applying to the ground?
78 PSI
While swinging a heavy load with a crane set up on outriggers and the operator swings over
one of the outriggers, that outrigger must be able to support
85% of the weight of the crane and 100% of the weight of the load
What is the first thing an operator should do before traveling under a low pipe rack or
obstruction?
post a signalperson to check clearances
According to OSHA, when traveling under an energized power line, what is the minimum
distance for a line with over 750kv?
20ft
When a crane is in transit and you are required to pass under 50kV power lines, what is
OSHA's minimum required clearance?
6 ft (Table T)
,If setting up the crane by a ditch or an excavation, you should stay at least what distance from
the edge?
1 ½ times the depth of the excavation
When working at ground floor level near a cellar wall, the crane's outrigger pads or tracks
should be placed
at least as far back as the depth of the wall below ground
How much area would be required for 45,000 pounds to create only 20 PSI?
2,250 square inches
Why use mats or cribbing?
To reduce ground bearing pressure
What is the purpose of placing blocking or pads under the outrigger floats?
Distribute the force over a larger area
According to OSHA who is responsible for ensuring proper ground conditions when setting up
a mobile crane?
The controlling entity
What is not a good location for crane set up?
Above utilities
While operating a boom truck near a reinforced retaining wall, it is recommended to stay back
A distance equal to the depth
What would be a concern when setting up a crane over a sewer or water main?
Weight and vibration from the machine and load
When setting up a crane in an area that has public access, you should barricade:
the jobsite
When setting up a crane, what must be barricaded to protect workers?
The hazardous areas created by the rotating superstructure
According to OSHA, what area must be barricaded to prevent employees from entering
,accessible areas within the swing radius of the rear of the rotating superstructure of the crane
The best way to keep people from being injured from the counterweight of the crane is to
Fence or barricade the swing area of the crane
When operating a crane in a tight space, what would be the recommended minimum
clearance for the rear swing of the crane?
2 ft
What is the best procedure to follow when underground utilities may be present?
Contact local utility company
While performing a shift inspection on a crane and there is water accumulation around the
outrigger, what must be done?
Drained
The load line of the crane you're operating comes into contact with an energized power line.
There's no sign of any other danger, such as fire. In such a situation, you should
stay in the cab until the lines are de-energized
What is the most common cause of death to ground personnel working with cranes
electrocution
What is the minimum allowable clearance from the crane and power lines under 50kV
10 ft
When working near power lines, when is a dedicated spotter required?
When the crane can reach within 20 ft. of power lines
According to OSHA 1926 Subpart CC, how many power line warning decals must be on a crane
working in construction?
3
When is it safe to handle loads under powerlines?
The load nor any part of the crane can come closer than regulations allow
, According to ASME B30.5, the prohibited zone for power lines that are 60kV is
15 ft
According to ASME B30.5, when working around power lines of more than 750kV, how much
clearance is generally required from any part of the crane and its load
45 ft
What is the proper procedure when using an insulating link or a boot near power lines
be sure to maintain the correct allowable distance from the lines
When working closer than 10 feet on a 12 KV line
De-energize and ground the circuit.
What is the #1 cause of death of ground personnel working with cranes?
Electrocution
What is the minimum clearance for a crane operating near an energized power line of 40 kV
for a non-qualified electrical worker?
10 ft
What must a person working around energized power lines not wear?
Conductive items
If a crane is being used closer than 10' to an energized power line, the operator must
Be an electrically qualified person
Protective grounding equipment must be able to conduct the maximum fault current
at the point of grounding.
What is the minimum approach distance for an unqualified crane operator with a qualified
electrical worker as an observer doing work around a 12 KV circuit?
10 feet
OSHA ET&D standards require retraining if a task has not been performed for over
1 year.
Correct Answers | Latest Update 2026/2027 |
Graded A+ | 100% Pass.
If not overloaded, the ground bearing pressure of a single outrigger pad can approach a
weight equal to:
85% of the weight of the crane and 100% of the suspended load
If you move a crawler crane from soft ground to harder ground, ground bearing pressure will
increase
On a crawler crane, ground bearing pressure is greatest when hoisting where?
over the corner
If an outrigger pad has 45,000 pounds applied to it and the pad measures 2ft x 2ft how many
psi is it applying to the ground?
78 PSI
While swinging a heavy load with a crane set up on outriggers and the operator swings over
one of the outriggers, that outrigger must be able to support
85% of the weight of the crane and 100% of the weight of the load
What is the first thing an operator should do before traveling under a low pipe rack or
obstruction?
post a signalperson to check clearances
According to OSHA, when traveling under an energized power line, what is the minimum
distance for a line with over 750kv?
20ft
When a crane is in transit and you are required to pass under 50kV power lines, what is
OSHA's minimum required clearance?
6 ft (Table T)
,If setting up the crane by a ditch or an excavation, you should stay at least what distance from
the edge?
1 ½ times the depth of the excavation
When working at ground floor level near a cellar wall, the crane's outrigger pads or tracks
should be placed
at least as far back as the depth of the wall below ground
How much area would be required for 45,000 pounds to create only 20 PSI?
2,250 square inches
Why use mats or cribbing?
To reduce ground bearing pressure
What is the purpose of placing blocking or pads under the outrigger floats?
Distribute the force over a larger area
According to OSHA who is responsible for ensuring proper ground conditions when setting up
a mobile crane?
The controlling entity
What is not a good location for crane set up?
Above utilities
While operating a boom truck near a reinforced retaining wall, it is recommended to stay back
A distance equal to the depth
What would be a concern when setting up a crane over a sewer or water main?
Weight and vibration from the machine and load
When setting up a crane in an area that has public access, you should barricade:
the jobsite
When setting up a crane, what must be barricaded to protect workers?
The hazardous areas created by the rotating superstructure
According to OSHA, what area must be barricaded to prevent employees from entering
,accessible areas within the swing radius of the rear of the rotating superstructure of the crane
The best way to keep people from being injured from the counterweight of the crane is to
Fence or barricade the swing area of the crane
When operating a crane in a tight space, what would be the recommended minimum
clearance for the rear swing of the crane?
2 ft
What is the best procedure to follow when underground utilities may be present?
Contact local utility company
While performing a shift inspection on a crane and there is water accumulation around the
outrigger, what must be done?
Drained
The load line of the crane you're operating comes into contact with an energized power line.
There's no sign of any other danger, such as fire. In such a situation, you should
stay in the cab until the lines are de-energized
What is the most common cause of death to ground personnel working with cranes
electrocution
What is the minimum allowable clearance from the crane and power lines under 50kV
10 ft
When working near power lines, when is a dedicated spotter required?
When the crane can reach within 20 ft. of power lines
According to OSHA 1926 Subpart CC, how many power line warning decals must be on a crane
working in construction?
3
When is it safe to handle loads under powerlines?
The load nor any part of the crane can come closer than regulations allow
, According to ASME B30.5, the prohibited zone for power lines that are 60kV is
15 ft
According to ASME B30.5, when working around power lines of more than 750kV, how much
clearance is generally required from any part of the crane and its load
45 ft
What is the proper procedure when using an insulating link or a boot near power lines
be sure to maintain the correct allowable distance from the lines
When working closer than 10 feet on a 12 KV line
De-energize and ground the circuit.
What is the #1 cause of death of ground personnel working with cranes?
Electrocution
What is the minimum clearance for a crane operating near an energized power line of 40 kV
for a non-qualified electrical worker?
10 ft
What must a person working around energized power lines not wear?
Conductive items
If a crane is being used closer than 10' to an energized power line, the operator must
Be an electrically qualified person
Protective grounding equipment must be able to conduct the maximum fault current
at the point of grounding.
What is the minimum approach distance for an unqualified crane operator with a qualified
electrical worker as an observer doing work around a 12 KV circuit?
10 feet
OSHA ET&D standards require retraining if a task has not been performed for over
1 year.
