OSHA scaffold rules for construction (29 CFR 1926 Subpart L): capacity, platforms, footing, access, inspection by a competent person, fall protection above 10 feet, power line clearance and training. Free practice quiz with instant feedback; every explanation cites the 29 CFR paragraph it is based on. Independent review material: not affiliated with or endorsed by OSHA, not an OSHA Outreach (10/30-hour) exam, and it does not replace the training and evaluation your employer must provide.
Question 1 · Single choice · 90s · 1 pt
Above what height must each employee on a scaffold be protected from falling?
- More than 4 feet
- More than 6 feet
- More than 10 feet
- More than 15 feet
Question 2 · Single choice · 90s · 1 pt
How much load must each scaffold and scaffold component support without failure?
- Its own weight plus exactly the maximum intended load placed on it
- Its own weight and at least 4 times the maximum intended load
- Twice the weight of the heaviest worker on it
- At least 5,000 pounds, whatever the scaffold type
Question 3 · Single choice · 90s · 1 pt
Who must inspect scaffolds for visible defects before each work shift?
- A competent person
- The scaffold supplier
- An OSHA inspector
- Any worker on the crew
Question 4 · True / False · 90s · 1 pt
Workers may climb the crossbraces of a frame scaffold to reach the platform if the ladder is in use.
Question 5 · Single choice · 90s · 1 pt
Above or below a point of access, from what height difference must proper scaffold access be provided?
- More than 1 foot
- More than 4 feet
- More than 6 feet
- More than 2 feet
Question 6 · Single choice · 90s · 1 pt
How wide must a scaffold platform or walkway generally be?
- At least 12 inches
- At least 24 inches
- At least 36 inches
- At least 18 inches
Question 7 · Single choice · 90s · 1 pt
Generally, how wide may the gaps between adjacent planks or decks of a working platform be?
- No more than 1 inch
- No more than 3 inches
- No more than 6 inches
- No more than 9½ inches
Question 8 · Multiple choice · 90s · 1 pt
What may supported scaffold legs and frames rest on? Choose the 2 correct answers.
- Base plates and mud sills
- Another adequate firm foundation
- Stacked concrete blocks
- Loose bricks or boxes
Question 9 · Single choice · 90s · 1 pt
A supported scaffold must be guyed, tied or braced against tipping when its height to base width ratio is more than what?
Question 10 · Single choice · 90s · 1 pt
Under whose supervision may a scaffold be erected, moved, dismantled or altered?
- Any employee who has used scaffolds before
- The building owner or a site visitor
- The general contractor's office manager
- A competent person qualified in that work
Question 11 · True / False · 90s · 1 pt
Boxes, barrels or ladders may be placed on a scaffold platform to reach a little higher.
Question 12 · Single choice · 90s · 1 pt
How close may a scaffold come to an uninsulated power line of less than 50 kV?
- No closer than 3 feet
- No closer than 6 feet
- No closer than 10 feet
- No closer than 25 feet
Question 13 · Single choice · 90s · 1 pt
Who must train employees who work while on a scaffold?
- A person qualified in the subject matter
- Any coworker with a few years of experience
- The scaffold manufacturer's sales representative
- Nobody, if the scaffold is under 10 feet
Question 14 · Multiple choice · 90s · 1 pt
When is scaffold retraining required? Choose the 3 correct answers.
- Worksite changes bring a hazard not covered before
- New types of scaffolds or fall protection are used
- An employee's work shows proficiency was not retained
- Every calendar year on the same date, no matter what