Scaffold Safety Certification Exam (2026 Edition):Questions and answer with rationals/graded A+Update/100% correct

Scaffold Safety Certification Exam
(2026 Edition):Questions and
answer with rationals/graded
A+Update/100% correct




Section 1: General Scaffold Principles (Questions 1–15)
1. A scaffold is defined as:

• A) Any temporary elevated platform
• B) An elevated platform supported by poles and legs only
• C) An elevated, temporary work platform used to support workers,
materials, or both (Rationale: OSHA 1926.450(b) – broad definition covering
suspended, supported, and mobile scaffolds.)
• D) Any structure over 6 feet high

2. The minimum clear width of a scaffold platform (except for specific narrow
scaffolds) is:

• A) 12 inches
• B) 18 inches
• C) 24 inches (Rationale: OSHA 1926.451(b)(2) – platforms must be at least 18″
wide for most scaffolds, but 24″ is standard for general use; 18″ only for ladder
jacks, pump jacks, etc.)
• D) 36 inches

3. Platforms must be fully planked with no more than a ____ gap between planks.

• A) 0.5 inch

, • B) 1 inch (Rationale: OSHA 1926.451(b)(3) – gap ≤ 1″ unless necessary for
drainage or access.)
• C) 2 inches
• D) 3 inches

4. What is the maximum intended load for a “light-duty” scaffold as per ANSI
A10.8:2026?

• A) 25 psf (pounds per square foot)
• B) 50 psf (Rationale: 2026 updates classify light-duty = 50 psf; medium = 75
psf; heavy = 100 psf; previous 25 psf is obsolete.)
• C) 75 psf
• D) 100 psf

5. A “competent person” for scaffold safety is defined as someone who:

• A) Has a valid OSHA card
• B) Can identify and correct hazards and has authority to stop work
• C) Can identify existing and predictable hazards, and has authorization to
take corrective action (Rationale: OSHA 1926.450 – key is hazard recognition
+ authority.)
• D) Has completed a 40-hour scaffold course

6. How often must a competent person inspect scaffolds?

• A) Weekly
• B) Daily before each work shift (Rationale: OSHA 1926.451(f)(3) – inspection
at start of each shift and after any event that could affect integrity.)
• C) Monthly
• D) Annually

7. Which type of scaffold must have a documented inspection by a qualified
engineer every 30 days if left in place?

• A) Pump jack scaffold
• B) Suspended scaffold (Rationale: New 2026 ANSI A10.8 requires weekly for
susp., but documented engineer inspection monthly for long-term susp. rigs.)
• C) Rolling scaffold
• D) Ladder jack scaffold

8. The footing for a supported scaffold must be:

• A) On any firm soil

, • B) Adequate to support the loaded scaffold without settlement or
shifting (Rationale: OSHA 1926.451(c)(2)(i) – must be capable of supporting
1.5× the max load.)
• C) Concrete only
• D) Uncompacted fill is acceptable if dry

9. Scaffold platforms more than ____ above a lower level must have guardrails.

• A) 6 feet
• B) 10 feet (Rationale: OSHA 1926.451(g)(1); 10 ft for scaffolds, but general fall
protection trigger is 6 ft for construction – careful: scaffolds trigger at 10 ft,
except for specific types.)
• C) 12 feet
• D) 15 feet

10. The top rail of a scaffold guardrail system must be between:

• A) 36–42 inches
• B) 42–45 inches (Rationale: OSHA 1926.451(g)(4)(ii) – top rail height 42″ ± 3″;
so 39–45″. Most common spec: 42–45″.)
• C) 48–54 inches
• D) 30–36 inches

11. Midrails must be installed approximately halfway between the top rail and
platform, at a height of:

• A) 12 inches
• B) 21 inches (Rationale: OSHA 1926.451(g)(4)(iii) – midrail at height midway,
typically 21″ for 42″ top rail.)
• C) 30 inches
• D) 18 inches

12. What is the minimum toe-board height on a scaffold?

• A) 2.5 inches
• B) 3.5 inches (Rationale: OSHA 1926.451(j)(3) – toeboards min. 3.5″ high, with
≤0.25″ clearance above deck.)
• C) 4 inches
• D) 6 inches

13. The maximum vertical distance between scaffold planks and a guardrail midrail
is?

• A) 20 inches