ANSWERS 2025/2026 ALL RATED A+
✔✔You should use a float (mat) under a crane's outrigger steel pads:
a.When the crane is on uneven ground
b.At all times
c.When the ground surface is not strong enough to support the high concentration of
pressure from the outrigger's steel pads
d.When you have them handy - ✔✔c
✔✔One of the variables that can affect the capacity of a crane is the "quadrants of
operation." What does the term "quadrants of operation" mean?
a. If the crane is on stabilizers or rubber tires; the various counterweight configurations;
and more.
b.The horizontal distance from the center pin of the crane to the center of gravity of the
load.
c.The distance measured from the bottom front pins or hinge pins to the center of the
sheave on the boom nose or tip.
d.The crane's sweep area that is divided into four quadrants. These are the front, the
rear, and each side. - ✔✔d
✔✔To maximize safety during a lift, what critical information should every crane
operator pay close attention to?
1.Be aware of the environment around you at all times.
2.Ensure that all calculations regarding lifts are correct.
3.Note the time and date of each lift.
4.Be familiar with the equipment you operate. - ✔✔1..2.4
✔✔How is a crane's leverage calculated?
a.A crane's leverage is the weight of the crane times the horizontal distance from the
tipping axis to the crane's center of gravity.
b.A crane's leverage is the weight of the load times the horizontal distance from the
tipping axis to the crane's center of gravity.
, c.A crane's leverage is the weight of the load times the horizontal distance from the
tipping axis to the load's center of gravity.
d.A crane's leverage is measured by the pounds-per-square-inch of its steel pad on the
ground. - ✔✔a
✔✔What must you know when using a load chart?
1.Configuration of the crane
2.The type of float or mat being used under an outrigger
3.Boom length and angle
4.Load radius - ✔✔1.3.4
✔✔You are going to be operating a crane. What are acceptable ways you can keep in
continuous communication with the rigger and signalman?
1. Hand signals
2.Sign language
3.Radio communication
4.Written instructions - ✔✔1.3
✔✔The minimum safe clearance distance from power lines rated 50 kilovolts or below is
________.
a. 5 feet
b.10 feet
c. 15 feet
d.20 feet - ✔✔b
✔✔The crane operator must remain in continuous communication with his riggers and
signalman. What two methods of communication can he use?
1. Sign language
2.Posters
3. Radio communication
4. Hand signals - ✔✔3.4