EICA MOBILE CRANE & DIGGER DERRICK EXAM
QUESTIONS AND ANSWERS | 100% VERIFIED
AND WELL DETAILED ANSWERS | LATEST
UPDATE 2026/2027 (GRADED A+)
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Terms in this set (335)
If not overloaded, the ground 85% of the weight of the crane and 100% of the
bearing pressure of a single suspended load
outrigger pad can approach a
weight equal to:
If you move a crawler crane from increase
soft ground to harder ground,
ground bearing pressure will
On a crawler crane, ground bearing over the corner
pressure is greatest when hoisting
where?
If an outrigger pad has 45,000 78 PSI
pounds applied to it and the pad
measures 2ft x 2ft how many psi is it
applying to the ground?
, How much area would be required 2,250 square inches
for 45,000 pounds to create only 20
PSI?
Why use mats or cribbing? To reduce ground bearing pressure
What is the purpose of placing Distribute the force over a larger area
blocking or pads under the outrigger
floats?
While swinging a heavy load with a 85% of the weight of the crane and 100% of the
crane set up on outriggers and the weight of the load
operator swings over one of the
outriggers, that outrigger must be
able to support
What is the first thing an operator post a signalperson to check clearances
should do before traveling under a
low pipe rack or obstruction?
According to OSHA, when traveling 20ft
under an energized power line, what
is the minimum distance for a line
with over 750kv?
When a crane is in transit and you are 6 ft (Table T)
required to pass under 50kV power
lines, what is OSHA's minimum
required clearance?
If setting up the crane by a ditch or 1 ½ times the depth of the excavation
an excavation, you should stay at
least what distance from the edge?
QUESTIONS AND ANSWERS | 100% VERIFIED
AND WELL DETAILED ANSWERS | LATEST
UPDATE 2026/2027 (GRADED A+)
Save
Terms in this set (335)
If not overloaded, the ground 85% of the weight of the crane and 100% of the
bearing pressure of a single suspended load
outrigger pad can approach a
weight equal to:
If you move a crawler crane from increase
soft ground to harder ground,
ground bearing pressure will
On a crawler crane, ground bearing over the corner
pressure is greatest when hoisting
where?
If an outrigger pad has 45,000 78 PSI
pounds applied to it and the pad
measures 2ft x 2ft how many psi is it
applying to the ground?
, How much area would be required 2,250 square inches
for 45,000 pounds to create only 20
PSI?
Why use mats or cribbing? To reduce ground bearing pressure
What is the purpose of placing Distribute the force over a larger area
blocking or pads under the outrigger
floats?
While swinging a heavy load with a 85% of the weight of the crane and 100% of the
crane set up on outriggers and the weight of the load
operator swings over one of the
outriggers, that outrigger must be
able to support
What is the first thing an operator post a signalperson to check clearances
should do before traveling under a
low pipe rack or obstruction?
According to OSHA, when traveling 20ft
under an energized power line, what
is the minimum distance for a line
with over 750kv?
When a crane is in transit and you are 6 ft (Table T)
required to pass under 50kV power
lines, what is OSHA's minimum
required clearance?
If setting up the crane by a ditch or 1 ½ times the depth of the excavation
an excavation, you should stay at
least what distance from the edge?
