CME 405 FINAL EXAM STUDY GUIDE QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+
Trench is narrow excavation that the depth is greater than its width, but
the width of trench is not greater than 20 feet. T or F? Ans✓✓✓False, 15
feet
Type A soils consist of coarse sands and/or gravel and have an
unconfined compressive strength of less than 0.5 tons per square foot. T
or F Ans✓✓✓False, 1.5 tons per square foot
Which of the following statements about crane safety is incorrect?
Answers:
a. OSHA regulations generally require a minimum clearance of 10 feet
from power lines rated up to 50 kV.
b.A proximity device is a device used on hook of a crane to protect the
crane or its load from the danger of electrocution.
c. Crane manufacturers provide lifting data for their cranes to ensure
safe and efficient operation including range diagram, load rating charts,
PSCA rating class, and crane specifications.
, d. When assembling a crane, the outriggers must be either fully
extended, or if manufacturer procedures permit, deployed as specified in
the load chart.
e. Anyone who becomes aware of a safety problem must alert the
operator or signal person by giving the stop or emergency stop signal.
Ans✓✓✓b. A proximity device is a device used on hook of a crane to
protect the crane or its load from the danger of electrocution.
Placed on the boom.
Which of the following statements accurately describes the center of
gravity in rigging?
Answers:
a. The center of gravity refers to the point at which a load is attached to
the crane hook.
b. The center of gravity is the midpoint between the crane's outriggers
during operation.
c. The center of gravity is the theoretical point where the entire weight
of an object is concentrated.
d. The center of gravity remains fixed regardless of changes in the load's
position or orientation.
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+
Trench is narrow excavation that the depth is greater than its width, but
the width of trench is not greater than 20 feet. T or F? Ans✓✓✓False, 15
feet
Type A soils consist of coarse sands and/or gravel and have an
unconfined compressive strength of less than 0.5 tons per square foot. T
or F Ans✓✓✓False, 1.5 tons per square foot
Which of the following statements about crane safety is incorrect?
Answers:
a. OSHA regulations generally require a minimum clearance of 10 feet
from power lines rated up to 50 kV.
b.A proximity device is a device used on hook of a crane to protect the
crane or its load from the danger of electrocution.
c. Crane manufacturers provide lifting data for their cranes to ensure
safe and efficient operation including range diagram, load rating charts,
PSCA rating class, and crane specifications.
, d. When assembling a crane, the outriggers must be either fully
extended, or if manufacturer procedures permit, deployed as specified in
the load chart.
e. Anyone who becomes aware of a safety problem must alert the
operator or signal person by giving the stop or emergency stop signal.
Ans✓✓✓b. A proximity device is a device used on hook of a crane to
protect the crane or its load from the danger of electrocution.
Placed on the boom.
Which of the following statements accurately describes the center of
gravity in rigging?
Answers:
a. The center of gravity refers to the point at which a load is attached to
the crane hook.
b. The center of gravity is the midpoint between the crane's outriggers
during operation.
c. The center of gravity is the theoretical point where the entire weight
of an object is concentrated.
d. The center of gravity remains fixed regardless of changes in the load's
position or orientation.
