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NASCLA: 5 Free Practice Questions

Updated 4 min read
Key takeaway

Answer 5 original Sitonce questions without an account, then check your score and read the explanations.

  • This small study sample helps you spot ideas to review.
  • It does not reproduce the full examination or predict a pass.
  • The separate full course provides lessons and further practice.

These are original Sitonce study questions, not official or recalled exam items. No account is needed to answer this public sample or read its explanations.

This limited sample covers selected federal OSHA rules and a concrete quantity calculation. It does not cover the full Commercial General Building outline or replace its authorized reference books. It does not test state contractor licensing or lien law.

Start the 5-question sample

Your 5-question practice sample

Choose one answer per question. You can change your choices before checking your score. A blank earns zero.

Question 1 of 5A supported scaffold has a maximum intended load of 500 pounds. Under the general OSHA rule, how much applied load must it support, in addition to its own weight?
Answer and explanation for question 1

Answer: C. The general rule requires the scaffold and its components to support their own weight plus at least four times the maximum intended load. Four times 500 is 2,000 pounds. The lower choices do not provide that factor; the six-times rope rule does not govern this question.

OSHA 1926.451(a)(1): scaffold capacity

Question 2 of 5An employee suffers a work-related amputation on site, and the employer learns of it immediately. What is the OSHA reporting deadline for that amputation?
Answer and explanation for question 2

Answer: B. Report a work-related amputation within 24 hours. The eight-hour deadline is for a fatality. Waiting 72 hours or for the next injury-log entry does not meet the amputation reporting deadline.

OSHA 1904.39: reporting amputations

Question 3 of 5Who must inspect an excavation daily and is authorized to order work stopped?
Answer and explanation for question 3

Answer: B. A competent person identifies existing or predictable hazards and has authority to take prompt corrective measures. Excavation inspections are made by a competent person. A job title or qualification alone does not establish that combination of ability and authority.

OSHA 1926.651(k) and 1926.650(b): competent person

Question 4 of 5Where spoil could fall or roll into an excavation and no retaining device is used, what minimum distance from the edge applies to the spoil pile?
Answer and explanation for question 4

Answer: A. The OSHA provision uses at least two feet from the edge, or an adequate retaining device, or both as necessary. The question excludes a retaining device; the egress-depth number is a different rule.

OSHA 1926.651(j)(2): excavation spoil

Question 5 of 5A slab measures 30 feet by 40 feet at 4 inches thick. How many cubic yards of concrete, before waste?
Answer and explanation for question 5

Answer: A. Four inches is one third of a foot. Volume is 30 × 40 × 1/3 = 400 cubic feet. Divide by 27 cubic feet per cubic yard: approximately 14.8 cubic yards, before waste.

NASCLA candidate bulletin: plan-reading and quantity scope

Your topic scorecard

Correct answers out of the questions sampled in each topic; Items lists the question numbers
TopicItemsScore
OSHA scaffold/reporting rules1, 2? / 2
Excavation safety3, 4? / 2
Concrete quantities5? / 1
Total1-5? / 5

This limited sample covers selected federal OSHA rules and a concrete quantity calculation. It does not cover the full Commercial General Building outline or replace its authorized reference books. It does not test state contractor licensing or lien law. A perfect score only means you answered this small sample correctly. It does not establish exam readiness or predict a pass.

For each missed answer, write the controlling fact or rule in one sentence. Then work through an unfamiliar question on the same topic. Repeating this answer key from memory is not the same as learning the rule.

Continue with the full course

The public sample is a small part of your preparation. View the separate NASCLA Contractor Exam course for its lessons, practice and full mock options. Account and course-access requirements apply to those separate features.

Common questions

Do I need an account for these questions?

No. The questions and answer explanations are public. Automatic scoring is optional; without JavaScript you can use the answer explanations and manual scorecard.

Does this score predict whether I will pass?

No. This short sample is not weighted or calibrated to predict an official result. Use missed answers to choose what to review next.

Is the full course the same as this sample?

The full course is a separate learning experience with lessons, practice and mock options. Follow View course to see its access requirements and current offer.

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