OSHA 30-Hour Construction Exam
Questions With Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which federal agency is responsible for enforcing workplace safety
regulations in the United States?
a) EPA
b) OSHA
c) CDC
d) NIOSH
Rationale: OSHA (Occupational Safety and Health Administration) is
the federal agency responsible for enforcing workplace safety
regulations under the Occupational Safety and Health Act.
, 2. What is the primary purpose of the OSHA 30-hour Construction
training?
a) To train workers to operate machinery
b) To provide comprehensive safety and health training for
construction workers
c) To issue construction permits
d) To conduct safety inspections
Rationale: The OSHA 30-hour course is designed to educate
construction workers and supervisors on hazard recognition,
prevention, and safety management.
3. A “competent person” on a construction site is someone who:
a) Is able to read safety manuals
b) Is capable of identifying existing and predictable hazards and
authorized to take corrective measures
c) Works in human resources
d) Operates heavy machinery
Rationale: OSHA defines a competent person as one who can identify
hazards and has the authority to correct them, ensuring compliance
with safety regulations.
, 4. Which of the following is considered a fall hazard in construction?
a) Wet paint
b) Unprotected edges more than 6 feet above a lower level
c) Loud noise
d) Dust exposure
Rationale: Falls from elevated surfaces are one of the leading causes
of injury and death in construction; unprotected edges above 6 feet
require proper fall protection.
5. What type of personal protective equipment (PPE) should be worn
when working with hazardous chemicals?
a) Safety vest
b) Gloves, goggles, and respirators appropriate to the chemical
c) Hard hat only
d) Steel-toed boots only
Rationale: PPE must be chosen based on the type of chemical hazard,
including gloves, eye protection, and respiratory protection to prevent
exposure.
, 6. The OSHA standard requires scaffolds to support:
a) At least twice the maximum intended load without failure
b) Exactly the weight of the worker
c) At least four times the maximum intended load
d) At least the weight of tools and materials
Rationale: Scaffolds must be capable of supporting at least four times
the intended load to ensure stability and prevent collapse.
7. What is the purpose of a Job Safety Analysis (JSA)?
a) To calculate project cost
b) To identify hazards associated with specific tasks and plan
preventive measures
c) To schedule breaks
d) To inspect tools
Rationale: JSAs help workers understand the hazards of specific tasks
and implement safety measures before beginning work.
8. How often must fire extinguishers be inspected on a construction
site?
a) Every 6 months
Questions With Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. Which federal agency is responsible for enforcing workplace safety
regulations in the United States?
a) EPA
b) OSHA
c) CDC
d) NIOSH
Rationale: OSHA (Occupational Safety and Health Administration) is
the federal agency responsible for enforcing workplace safety
regulations under the Occupational Safety and Health Act.
, 2. What is the primary purpose of the OSHA 30-hour Construction
training?
a) To train workers to operate machinery
b) To provide comprehensive safety and health training for
construction workers
c) To issue construction permits
d) To conduct safety inspections
Rationale: The OSHA 30-hour course is designed to educate
construction workers and supervisors on hazard recognition,
prevention, and safety management.
3. A “competent person” on a construction site is someone who:
a) Is able to read safety manuals
b) Is capable of identifying existing and predictable hazards and
authorized to take corrective measures
c) Works in human resources
d) Operates heavy machinery
Rationale: OSHA defines a competent person as one who can identify
hazards and has the authority to correct them, ensuring compliance
with safety regulations.
, 4. Which of the following is considered a fall hazard in construction?
a) Wet paint
b) Unprotected edges more than 6 feet above a lower level
c) Loud noise
d) Dust exposure
Rationale: Falls from elevated surfaces are one of the leading causes
of injury and death in construction; unprotected edges above 6 feet
require proper fall protection.
5. What type of personal protective equipment (PPE) should be worn
when working with hazardous chemicals?
a) Safety vest
b) Gloves, goggles, and respirators appropriate to the chemical
c) Hard hat only
d) Steel-toed boots only
Rationale: PPE must be chosen based on the type of chemical hazard,
including gloves, eye protection, and respiratory protection to prevent
exposure.
, 6. The OSHA standard requires scaffolds to support:
a) At least twice the maximum intended load without failure
b) Exactly the weight of the worker
c) At least four times the maximum intended load
d) At least the weight of tools and materials
Rationale: Scaffolds must be capable of supporting at least four times
the intended load to ensure stability and prevent collapse.
7. What is the purpose of a Job Safety Analysis (JSA)?
a) To calculate project cost
b) To identify hazards associated with specific tasks and plan
preventive measures
c) To schedule breaks
d) To inspect tools
Rationale: JSAs help workers understand the hazards of specific tasks
and implement safety measures before beginning work.
8. How often must fire extinguishers be inspected on a construction
site?
a) Every 6 months
