CO Scaffolding Contractor Exam
Practice Exam Questions And Correct
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1. What is the minimum required width for a scaffold platform used for
general purposes?
A. 12 inches
B. 14 inches
C. 18 inches
D. 24 inches
Rationale: OSHA requires general-purpose platforms to be at least 18
inches wide to allow safe footing.
2. Which component supports the platform and connects directly to the
scaffold uprights?
A. Toeboards
B. Bearers (putlogs)
C. Midrails
D. Couplers
Rationale: Bearers/putlogs span between scaffold uprights and hold the
platform planks.
,3. What is the maximum allowable gap between scaffold planks?
A. 2 inches
B. 1 inch
C. 4 inches
D. 3 inches
Rationale: Platform gaps greater than 1 inch can create trip hazards unless
necessary for fitting.
4. A scaffold must be capable of supporting how many times the intended
load?
A. 2×
B. 3×
C. 4×
D. 6×
Rationale: OSHA requires scaffolds to support 4 times their maximum
intended load.
5. What is the minimum height at which fall protection is required on
scaffolds?
A. 4 ft
B. 6 ft
C. 10 ft
D. 15 ft
Rationale: Workers on scaffolds at 10 feet or more must be protected from
falling.
6. What is the purpose of a toeboard?
A. Foot support
B. Wind protection
C. Prevent tools or materials from falling
D. Support the guardrail
Rationale: Toeboards stop small objects from falling to lower levels.
7. How often must a competent person inspect scaffolding?
, A. Once per week
B. Before each shift
C. Every two days
D. After installation only
Rationale: OSHA requires inspection before each work shift and after any
incident affecting integrity.
8. Outrigger scaffolds require:
A. No extra bracing
B. A ladder built into the frame
C. Secure anchorage to the structure
D. Minimum 2-foot platform width
Rationale: Outriggers extend laterally and must be tied or anchored
securely.
9. When using casters on scaffolds, they must:
A. Be steel only
B. Be at least 6 inches high
C. Have functioning wheel locks
D. Be removable
Rationale: Rolling scaffolds require locking casters to prevent movement
during work.
10. Maximum vertical distance between scaffold ties to a structure is:
A. 10 ft
B. 26 ft
C. 35 ft
D. 50 ft
Rationale: First tie at 26 ft and every 26 ft thereafter for most scaffolds.
11. Cross bracing must form an “X” pattern because:
A. It looks uniform
B. It simplifies assembly
C. It stabilizes the scaffold from racking forces
Practice Exam Questions And Correct
Answers (Verified Answers) Plus
Rationale2026 Q&A| Instant Download
1. What is the minimum required width for a scaffold platform used for
general purposes?
A. 12 inches
B. 14 inches
C. 18 inches
D. 24 inches
Rationale: OSHA requires general-purpose platforms to be at least 18
inches wide to allow safe footing.
2. Which component supports the platform and connects directly to the
scaffold uprights?
A. Toeboards
B. Bearers (putlogs)
C. Midrails
D. Couplers
Rationale: Bearers/putlogs span between scaffold uprights and hold the
platform planks.
,3. What is the maximum allowable gap between scaffold planks?
A. 2 inches
B. 1 inch
C. 4 inches
D. 3 inches
Rationale: Platform gaps greater than 1 inch can create trip hazards unless
necessary for fitting.
4. A scaffold must be capable of supporting how many times the intended
load?
A. 2×
B. 3×
C. 4×
D. 6×
Rationale: OSHA requires scaffolds to support 4 times their maximum
intended load.
5. What is the minimum height at which fall protection is required on
scaffolds?
A. 4 ft
B. 6 ft
C. 10 ft
D. 15 ft
Rationale: Workers on scaffolds at 10 feet or more must be protected from
falling.
6. What is the purpose of a toeboard?
A. Foot support
B. Wind protection
C. Prevent tools or materials from falling
D. Support the guardrail
Rationale: Toeboards stop small objects from falling to lower levels.
7. How often must a competent person inspect scaffolding?
, A. Once per week
B. Before each shift
C. Every two days
D. After installation only
Rationale: OSHA requires inspection before each work shift and after any
incident affecting integrity.
8. Outrigger scaffolds require:
A. No extra bracing
B. A ladder built into the frame
C. Secure anchorage to the structure
D. Minimum 2-foot platform width
Rationale: Outriggers extend laterally and must be tied or anchored
securely.
9. When using casters on scaffolds, they must:
A. Be steel only
B. Be at least 6 inches high
C. Have functioning wheel locks
D. Be removable
Rationale: Rolling scaffolds require locking casters to prevent movement
during work.
10. Maximum vertical distance between scaffold ties to a structure is:
A. 10 ft
B. 26 ft
C. 35 ft
D. 50 ft
Rationale: First tie at 26 ft and every 26 ft thereafter for most scaffolds.
11. Cross bracing must form an “X” pattern because:
A. It looks uniform
B. It simplifies assembly
C. It stabilizes the scaffold from racking forces
