OSHA 30 Exam Study Questions (255 Questions with 100% Correct Answers)
Those who work on a crane or near crane operations must be trained. Which of the following is
true for this training? Correct Answer: D. All of the above
Certain inspections of crane equipment may be made by a(n) ___________ person; however,
crane inspections are typically required to be made by a(n) __________ person. Correct Answer:
Competent, qualified
After safety-related modifications have been made to crane equipment, the equipment must be
inspected by __________ prior to use. Correct Answer: A qualified person
Under OSHA construction requirements for crane and derricks, when a crane operator is
employed by a company, who must pay for the crane operator's certification? Correct Answer:
The crane operator's employer
Inspection of hoists should include: Correct Answer: Both A & B (Hooks & Safety latches)
Hoists shall be: Correct Answer: All of the above
Daily inspections need to include: Correct Answer: Checking of the wire rope for damage or
"caging"
Hoists shall be inspected: Correct Answer: Daily, prior to use
Do not perform maintenance on a conveyor until: Correct Answer: All hazardous energies are
disconnected and blocked
Which crane has the ability to be "jacked-up" as needed? Correct Answer: Tower
Load charts must: Correct Answer: Indicate rates lifting capacity and be visible to operator
Standards for safety can be found in: Correct Answer: 29 CFR 1926 Subpart CC
If a crane contacts a power line, the operator should normally stay in the cab until power has
been de-energized. Correct Answer: True
Above the heavy line crossing the load chart are values for failure in: Correct Answer: Structure
Cranes must maintain a minimum of ____ feet away from power lines: Correct Answer: 10'
Each of the following is true for an operator who needs the leave a suddenly energized crane
EXCEPT: Correct Answer: Walk to safety in a zigzag pattern
An annual inspection of each crane: Correct Answer: All of the above
,What is the minimum distance allowed between a spoils pile and trench's edge? Correct Answer:
Two feet
To be classified as Type A, the soil cannot be: Correct Answer: All of the Above
A cubic yard of soil can weigh as much as: Correct Answer: A small pickup truck
A soils are usually clays and cemented soils such as caliche and hardpan. Correct Answer: True
Each of the following is Type B soil EXCEPT: Correct Answer: Sand
Which of the following are common soil classification tests? Correct Answer: All except C
The definition of type C-60 soil is provided by manufacturers to allow the competent person an
opportunity to use vertical shores or... Correct Answer: True
A defining feature of Stable Rock is that it will: Correct Answer: Remain intact while exposed
OSHA requires that the competent person perform two visual and two manual tests on a soil
sample fresh out of the ground and not impacted by weather conditions at the site. Correct
Answer: False
A soil cannot be Type A if it is: Correct Answer: All of the above
The most important distinction between Stable Rock/Types A&B and Type C is: Correct
Answer: Degrees of stability
Which of the following statements is true of kickout? Correct Answer: All of the above
Mixed oak timbers have a greater bending strength per square inch than Douglas fir. Correct
Answer: False
Type B soils afford afford how many options of protection? Correct Answer: Four
In type C soil, the angle of repose is very low; how many degrees must the angle be? Correct
Answer: 34 degrees
Which soil type is the most common? Correct Answer: Type B
Shores must be pumped to a minimum pf 750 pounds of pressure but more is recommended.
Correct Answer: True
Aluminum hydraulic shoring permits both installation and removal without entering the trench
Correct Answer: True
, The struts of a screw jack system must be adjusted manually, which creates a hazard because the
worker is required to: Correct Answer: Be in the trench in order to adjust the strut
The depth at which an excavation needs attention from a registered professional engineer is:
Correct Answer: 20 feet
Shoring and shielding can be custom-built from tabulated data approved by a registered
professional engineer. Correct Answer: True
All systems have a seat of manufacturer's tabulated data to be used for proper design and
installation of the equipment. Correct Answer: True
Placing a shield between the side of an excavation and the work area can minimize the risk in the
event of a cave-in. Correct Answer: True
Walkways must have handrails when at ________ or more above lower level. Correct Answer: 6
feet
Establishing eye contact with your equipment operator is a general safety principle when
working outside the working radius. Correct Answer: True
All surface encumbrances must be removed or supported within: Correct Answer: The zone of
influence
A competent person must inspect all excavations, adjacent areas, and protective systems daily,
____________, and as needed throughout the shift. Correct Answer: Before work begins
When using a ladder in a trench, it must be: Correct Answer: All of the above
Being dangerously close to a falling load is: Correct Answer: Not allowed
Each of the following is true of accumulating water hazards EXCEPT: Correct Answer: Special
supports or shields are not allowed
Each of the following is true of underground installations EXCEPT: Correct Answer: They must
be removed
A surface encumbrance is anything that could create a ___________ in or around a trench.
Correct Answer: Hazard
When exposed to vehicular traffic, your evacuation site must have: Correct Answer: All of the
above
Warning systems for Mobile Equipment include barricades, hand signals, stop logs. Correct
Answer: True
Those who work on a crane or near crane operations must be trained. Which of the following is
true for this training? Correct Answer: D. All of the above
Certain inspections of crane equipment may be made by a(n) ___________ person; however,
crane inspections are typically required to be made by a(n) __________ person. Correct Answer:
Competent, qualified
After safety-related modifications have been made to crane equipment, the equipment must be
inspected by __________ prior to use. Correct Answer: A qualified person
Under OSHA construction requirements for crane and derricks, when a crane operator is
employed by a company, who must pay for the crane operator's certification? Correct Answer:
The crane operator's employer
Inspection of hoists should include: Correct Answer: Both A & B (Hooks & Safety latches)
Hoists shall be: Correct Answer: All of the above
Daily inspections need to include: Correct Answer: Checking of the wire rope for damage or
"caging"
Hoists shall be inspected: Correct Answer: Daily, prior to use
Do not perform maintenance on a conveyor until: Correct Answer: All hazardous energies are
disconnected and blocked
Which crane has the ability to be "jacked-up" as needed? Correct Answer: Tower
Load charts must: Correct Answer: Indicate rates lifting capacity and be visible to operator
Standards for safety can be found in: Correct Answer: 29 CFR 1926 Subpart CC
If a crane contacts a power line, the operator should normally stay in the cab until power has
been de-energized. Correct Answer: True
Above the heavy line crossing the load chart are values for failure in: Correct Answer: Structure
Cranes must maintain a minimum of ____ feet away from power lines: Correct Answer: 10'
Each of the following is true for an operator who needs the leave a suddenly energized crane
EXCEPT: Correct Answer: Walk to safety in a zigzag pattern
An annual inspection of each crane: Correct Answer: All of the above
,What is the minimum distance allowed between a spoils pile and trench's edge? Correct Answer:
Two feet
To be classified as Type A, the soil cannot be: Correct Answer: All of the Above
A cubic yard of soil can weigh as much as: Correct Answer: A small pickup truck
A soils are usually clays and cemented soils such as caliche and hardpan. Correct Answer: True
Each of the following is Type B soil EXCEPT: Correct Answer: Sand
Which of the following are common soil classification tests? Correct Answer: All except C
The definition of type C-60 soil is provided by manufacturers to allow the competent person an
opportunity to use vertical shores or... Correct Answer: True
A defining feature of Stable Rock is that it will: Correct Answer: Remain intact while exposed
OSHA requires that the competent person perform two visual and two manual tests on a soil
sample fresh out of the ground and not impacted by weather conditions at the site. Correct
Answer: False
A soil cannot be Type A if it is: Correct Answer: All of the above
The most important distinction between Stable Rock/Types A&B and Type C is: Correct
Answer: Degrees of stability
Which of the following statements is true of kickout? Correct Answer: All of the above
Mixed oak timbers have a greater bending strength per square inch than Douglas fir. Correct
Answer: False
Type B soils afford afford how many options of protection? Correct Answer: Four
In type C soil, the angle of repose is very low; how many degrees must the angle be? Correct
Answer: 34 degrees
Which soil type is the most common? Correct Answer: Type B
Shores must be pumped to a minimum pf 750 pounds of pressure but more is recommended.
Correct Answer: True
Aluminum hydraulic shoring permits both installation and removal without entering the trench
Correct Answer: True
, The struts of a screw jack system must be adjusted manually, which creates a hazard because the
worker is required to: Correct Answer: Be in the trench in order to adjust the strut
The depth at which an excavation needs attention from a registered professional engineer is:
Correct Answer: 20 feet
Shoring and shielding can be custom-built from tabulated data approved by a registered
professional engineer. Correct Answer: True
All systems have a seat of manufacturer's tabulated data to be used for proper design and
installation of the equipment. Correct Answer: True
Placing a shield between the side of an excavation and the work area can minimize the risk in the
event of a cave-in. Correct Answer: True
Walkways must have handrails when at ________ or more above lower level. Correct Answer: 6
feet
Establishing eye contact with your equipment operator is a general safety principle when
working outside the working radius. Correct Answer: True
All surface encumbrances must be removed or supported within: Correct Answer: The zone of
influence
A competent person must inspect all excavations, adjacent areas, and protective systems daily,
____________, and as needed throughout the shift. Correct Answer: Before work begins
When using a ladder in a trench, it must be: Correct Answer: All of the above
Being dangerously close to a falling load is: Correct Answer: Not allowed
Each of the following is true of accumulating water hazards EXCEPT: Correct Answer: Special
supports or shields are not allowed
Each of the following is true of underground installations EXCEPT: Correct Answer: They must
be removed
A surface encumbrance is anything that could create a ___________ in or around a trench.
Correct Answer: Hazard
When exposed to vehicular traffic, your evacuation site must have: Correct Answer: All of the
above
Warning systems for Mobile Equipment include barricades, hand signals, stop logs. Correct
Answer: True
