Trade Safety Certification Examination
TRADE SAFETY CERTIFICATION | EXAM QUESTIONS AND
CORRECT ANSWERS | VERIFIED TRADE SAFETY, HAZARD
PREVENTION AND WORKPLACE SAFETY
TRADE SAFETY CERTIFICATION
1. What is the primary purpose of the Occupational Safety and Health
Act of 1970?
A. To set minimum wage rates for construction trades
B. To license contractors in every state
C. To regulate union elections on job sites
D. To assure safe and healthful working conditions for working men and
women
D. To assure safe and healthful working conditions for working men
and women
The OSH Act created OSHA to set and enforce standards so workers have
safe and healthful workplaces.
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, Trade Safety Certification Examination
2. Under the General Duty Clause, an employer must keep the
workplace free from:
A. Only hazards listed in a written standard
B. All hazards regardless of severity
C. Recognized hazards causing or likely to cause death or serious physical
harm
D. Hazards that employees personally report
C. Recognized hazards causing or likely to cause death or serious
physical harm
Section 5(a)(1) covers recognized serious hazards even where no specific
standard applies.
3. In the hierarchy of controls, which method is considered the MOST
effective?
A. Elimination
B. Administrative controls
C. Engineering controls
D. Personal protective equipment
A. Elimination
Removing the hazard entirely protects everyone and does not rely on
worker behavior.
4. Which control in the hierarchy is considered the LEAST effective?
A. Elimination
B. Substitution
C. Engineering controls
D. Personal protective equipment
D. Personal protective equipment
PPE is the last line of defense because it depends on correct fit, use and
maintenance.
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, Trade Safety Certification Examination
5. Installing a local exhaust ventilation hood over a welding bench is an
example of:
A. An administrative control
B. PPE
C. An engineering control
D. Substitution
C. An engineering control
Engineering controls isolate people from hazards through physical
changes to the work area.
6. Rotating workers to limit their exposure time to noise is an example
of:
A. An engineering control
B. Elimination
C. An administrative control
D. Substitution
C. An administrative control
Changing work schedules and procedures to reduce exposure is an
administrative measure.
7. Under OSHA construction rules, fall protection is generally required
at what height?
A. 10 feet or more above a lower level
B. 4 feet or more above a lower level
C. 15 feet or more above a lower level
D. 6 feet or more above a lower level
D. 6 feet or more above a lower level
29 CFR 1926.501 sets the general construction trigger height at 6 feet.
8. In general industry, fall protection is required on walking-working
surfaces at what height?
A. 4 feet
B. 10 feet
C. 8 feet
D. 6 feet
A. 4 feet
General industry (1910.28) uses a 4-foot trigger height for unprotected
sides and edges.
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, Trade Safety Certification Examination
9. The top rail of a standard guardrail system must be at what height
above the walking surface?
A. 30 inches minimum
B. 48 inches, plus or minus 4 inches
C. 36 inches, plus or minus 2 inches
D. 42 inches, plus or minus 3 inches
D. 42 inches, plus or minus 3 inches
OSHA requires top rails at 42 inches ±3 inches.
10. A guardrail top rail must withstand a force of at least:
A. 100 pounds downward only
B. 500 pounds in any direction
C. 150 pounds outward only
D. 200 pounds applied in any outward or downward direction
D. 200 pounds applied in any outward or downward direction
The top rail must resist 200 lb without failing.
11. Midrails must be installed at approximately what height when no
wall or parapet is present?
A. Midway between the top rail and the walking surface
B. 12 inches below the top rail only
C. 6 inches above the walking surface
D. Even with the top rail
A. Midway between the top rail and the walking surface
Midrails sit about halfway, generally around 21 inches, to close the gap
below the top rail.
12. Toeboards on guardrail systems must be a minimum of how high?
A. 6 inches
B. 3.5 inches
C. 12 inches
D. 1 inch
B. 3.5 inches
A toeboard of at least 3½ inches prevents tools and materials from falling
to lower levels.
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TRADE SAFETY CERTIFICATION | EXAM QUESTIONS AND
CORRECT ANSWERS | VERIFIED TRADE SAFETY, HAZARD
PREVENTION AND WORKPLACE SAFETY
TRADE SAFETY CERTIFICATION
1. What is the primary purpose of the Occupational Safety and Health
Act of 1970?
A. To set minimum wage rates for construction trades
B. To license contractors in every state
C. To regulate union elections on job sites
D. To assure safe and healthful working conditions for working men and
women
D. To assure safe and healthful working conditions for working men
and women
The OSH Act created OSHA to set and enforce standards so workers have
safe and healthful workplaces.
Page 1 of 51
, Trade Safety Certification Examination
2. Under the General Duty Clause, an employer must keep the
workplace free from:
A. Only hazards listed in a written standard
B. All hazards regardless of severity
C. Recognized hazards causing or likely to cause death or serious physical
harm
D. Hazards that employees personally report
C. Recognized hazards causing or likely to cause death or serious
physical harm
Section 5(a)(1) covers recognized serious hazards even where no specific
standard applies.
3. In the hierarchy of controls, which method is considered the MOST
effective?
A. Elimination
B. Administrative controls
C. Engineering controls
D. Personal protective equipment
A. Elimination
Removing the hazard entirely protects everyone and does not rely on
worker behavior.
4. Which control in the hierarchy is considered the LEAST effective?
A. Elimination
B. Substitution
C. Engineering controls
D. Personal protective equipment
D. Personal protective equipment
PPE is the last line of defense because it depends on correct fit, use and
maintenance.
Page 2 of 51
, Trade Safety Certification Examination
5. Installing a local exhaust ventilation hood over a welding bench is an
example of:
A. An administrative control
B. PPE
C. An engineering control
D. Substitution
C. An engineering control
Engineering controls isolate people from hazards through physical
changes to the work area.
6. Rotating workers to limit their exposure time to noise is an example
of:
A. An engineering control
B. Elimination
C. An administrative control
D. Substitution
C. An administrative control
Changing work schedules and procedures to reduce exposure is an
administrative measure.
7. Under OSHA construction rules, fall protection is generally required
at what height?
A. 10 feet or more above a lower level
B. 4 feet or more above a lower level
C. 15 feet or more above a lower level
D. 6 feet or more above a lower level
D. 6 feet or more above a lower level
29 CFR 1926.501 sets the general construction trigger height at 6 feet.
8. In general industry, fall protection is required on walking-working
surfaces at what height?
A. 4 feet
B. 10 feet
C. 8 feet
D. 6 feet
A. 4 feet
General industry (1910.28) uses a 4-foot trigger height for unprotected
sides and edges.
Page 3 of 51
, Trade Safety Certification Examination
9. The top rail of a standard guardrail system must be at what height
above the walking surface?
A. 30 inches minimum
B. 48 inches, plus or minus 4 inches
C. 36 inches, plus or minus 2 inches
D. 42 inches, plus or minus 3 inches
D. 42 inches, plus or minus 3 inches
OSHA requires top rails at 42 inches ±3 inches.
10. A guardrail top rail must withstand a force of at least:
A. 100 pounds downward only
B. 500 pounds in any direction
C. 150 pounds outward only
D. 200 pounds applied in any outward or downward direction
D. 200 pounds applied in any outward or downward direction
The top rail must resist 200 lb without failing.
11. Midrails must be installed at approximately what height when no
wall or parapet is present?
A. Midway between the top rail and the walking surface
B. 12 inches below the top rail only
C. 6 inches above the walking surface
D. Even with the top rail
A. Midway between the top rail and the walking surface
Midrails sit about halfway, generally around 21 inches, to close the gap
below the top rail.
12. Toeboards on guardrail systems must be a minimum of how high?
A. 6 inches
B. 3.5 inches
C. 12 inches
D. 1 inch
B. 3.5 inches
A toeboard of at least 3½ inches prevents tools and materials from falling
to lower levels.
Page 4 of 51
