2
EICA Mobile Crane & Digger Derrick Exam with precise
|| || || || || || || || ||
detailed answers ||
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 ||
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 || || || || || ||
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
|| || || || ||
,2
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
|| || || || || || || || || || || ||
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 ||
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
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:
|| || || || || || || || || || || || || ||
, 2
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
||
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
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 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
|| || || || || || || || || ||
EICA Mobile Crane & Digger Derrick Exam with precise
|| || || || || || || || ||
detailed answers ||
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 ||
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 || || || || || ||
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
|| || || || ||
,2
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
|| || || || || || || || || || || ||
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 ||
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
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:
|| || || || || || || || || || || || || ||
, 2
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
||
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
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 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
|| || || || || || || || || ||
