EICA Mobile Crane & Digger Derrick
TEST STUDY GUIDE 2026/2027
COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. If not overloaded, the ground bearing pressure of a single outrigger pad can
approach a weight equal to: - ANSWER ✔ 85% of the weight of the crane
and 100% of the suspended load
2. If you move a crawler crane from soft ground to harder ground, ground
bearing pressure will - ANSWER ✔ increase
3. On a crawler crane, ground bearing pressure is greatest when hoisting
where? - ANSWER ✔ over the corner
4. 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? - ANSWER ✔ 78 PSI
5. How much area would be required for 45,000 pounds to create only 20 PSI?
- ANSWER ✔ 2,250 square inches
,6. Why use mats or cribbing? - ANSWER ✔ To reduce ground bearing
pressure
7. What is the purpose of placing blocking or pads under the outrigger floats? -
ANSWER ✔ Distribute the force over a larger area
8. 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 - ANSWER ✔ 85% of the weight of the crane and 100% of the
weight of the load
9. Only approved attachments or extra counterweights made by the
manufacturer should be placed on the rear of the crane because - ANSWER
✔ They could cause a backward stability problem
10.When working on rubber, cranes are rated at what percentage of tipping? -
ANSWER ✔ 75%
11.Load chart ratings apply only when - ANSWER ✔ the crane is set up and
maintained level, the hoist line is vertical at all times and the load is freely
suspended during the lift, and the load is picked up directly under the boom
tip
12.Boom trucks normally do not have capacities in which operating area? -
ANSWER ✔ over the front
13.If the jib is removed from the Terex Stinger 3470 BT, what is the deduction?
- ANSWER ✔ There is no deduction
,14.A truck crane, with outriggers properly set, is rated at what percentage of its
tipping capacity? - ANSWER ✔ 85%
15.When using load/capacity charts, what does the term "jib angle to ground"
refer to? - ANSWER ✔ Main boom angle minus the jib's offset
16.If a jib is erected but not being used, it is treated as a deduction from the
crane's - ANSWER ✔ Gross capacity
17.When setting up a crane, the outriggers on one side could not be extended
and set in this position, which load chart must be used? - ANSWER ✔ On
rubber
18.What must be done when the capacity listings are no longer legible on a load
chart? - ANSWER ✔ Obtain new charts from the manufacturer
19.If while operating a crane and you fall between the radius listed on the load
chart, you must use the - ANSWER ✔ Next greater radius listed
20.What should be compared to determine if the load charts are correct for the
crane you are operating? - ANSWER ✔ Serial numbers
21.What information will a range diagram not give the operator? - ANSWER ✔
Capacities
22.The line pull on your crane is 6,000 lbs and the load you want to lift weighs
25,000 lbs. What is the minimum number of parts of line needed to lift the
load? - ANSWER ✔ 5
, 23.According to OSHA what designation of person must perform a visual pre
shift inspection? - ANSWER ✔ Competent
24.According to OSHA 1926 Subpart CC, who shall perform a shift inspection
on a crane? - ANSWER ✔ Competent Person
25.Wire rope on mobile cranes shall have a thorough documented inspection at
what minimum interval? - ANSWER ✔ Monthly
26.A frequent inspection is - ANSWER ✔ Daily to monthly
27.A periodic inspection is - ANSWER ✔ Monthly to annually
28.Cranes idle for more than 6 months must have which inspection(s)
performed. - ANSWER ✔ Frequent and periodic
29.Cranes idle for less than 6 months must have what type of inspection
performed. - ANSWER ✔ Frequent
30.A crane hooks throat opening must not exceed - ANSWER ✔ 5% of its
original size
31.How many broken wires must be present in one strand of one lay for running
wire rope to be removed from service? - ANSWER ✔ 3
TEST STUDY GUIDE 2026/2027
COMPLETE QUESTIONS WITH
VERIFIED CORRECT ANSWERS ||
100% GUARANTEED PASS
<NEWEST VERSION>
1. If not overloaded, the ground bearing pressure of a single outrigger pad can
approach a weight equal to: - ANSWER ✔ 85% of the weight of the crane
and 100% of the suspended load
2. If you move a crawler crane from soft ground to harder ground, ground
bearing pressure will - ANSWER ✔ increase
3. On a crawler crane, ground bearing pressure is greatest when hoisting
where? - ANSWER ✔ over the corner
4. 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? - ANSWER ✔ 78 PSI
5. How much area would be required for 45,000 pounds to create only 20 PSI?
- ANSWER ✔ 2,250 square inches
,6. Why use mats or cribbing? - ANSWER ✔ To reduce ground bearing
pressure
7. What is the purpose of placing blocking or pads under the outrigger floats? -
ANSWER ✔ Distribute the force over a larger area
8. 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 - ANSWER ✔ 85% of the weight of the crane and 100% of the
weight of the load
9. Only approved attachments or extra counterweights made by the
manufacturer should be placed on the rear of the crane because - ANSWER
✔ They could cause a backward stability problem
10.When working on rubber, cranes are rated at what percentage of tipping? -
ANSWER ✔ 75%
11.Load chart ratings apply only when - ANSWER ✔ the crane is set up and
maintained level, the hoist line is vertical at all times and the load is freely
suspended during the lift, and the load is picked up directly under the boom
tip
12.Boom trucks normally do not have capacities in which operating area? -
ANSWER ✔ over the front
13.If the jib is removed from the Terex Stinger 3470 BT, what is the deduction?
- ANSWER ✔ There is no deduction
,14.A truck crane, with outriggers properly set, is rated at what percentage of its
tipping capacity? - ANSWER ✔ 85%
15.When using load/capacity charts, what does the term "jib angle to ground"
refer to? - ANSWER ✔ Main boom angle minus the jib's offset
16.If a jib is erected but not being used, it is treated as a deduction from the
crane's - ANSWER ✔ Gross capacity
17.When setting up a crane, the outriggers on one side could not be extended
and set in this position, which load chart must be used? - ANSWER ✔ On
rubber
18.What must be done when the capacity listings are no longer legible on a load
chart? - ANSWER ✔ Obtain new charts from the manufacturer
19.If while operating a crane and you fall between the radius listed on the load
chart, you must use the - ANSWER ✔ Next greater radius listed
20.What should be compared to determine if the load charts are correct for the
crane you are operating? - ANSWER ✔ Serial numbers
21.What information will a range diagram not give the operator? - ANSWER ✔
Capacities
22.The line pull on your crane is 6,000 lbs and the load you want to lift weighs
25,000 lbs. What is the minimum number of parts of line needed to lift the
load? - ANSWER ✔ 5
, 23.According to OSHA what designation of person must perform a visual pre
shift inspection? - ANSWER ✔ Competent
24.According to OSHA 1926 Subpart CC, who shall perform a shift inspection
on a crane? - ANSWER ✔ Competent Person
25.Wire rope on mobile cranes shall have a thorough documented inspection at
what minimum interval? - ANSWER ✔ Monthly
26.A frequent inspection is - ANSWER ✔ Daily to monthly
27.A periodic inspection is - ANSWER ✔ Monthly to annually
28.Cranes idle for more than 6 months must have which inspection(s)
performed. - ANSWER ✔ Frequent and periodic
29.Cranes idle for less than 6 months must have what type of inspection
performed. - ANSWER ✔ Frequent
30.A crane hooks throat opening must not exceed - ANSWER ✔ 5% of its
original size
31.How many broken wires must be present in one strand of one lay for running
wire rope to be removed from service? - ANSWER ✔ 3
