Free NASCLA practice test with explained answers
Yes, there is a free NASCLA practice test: the Bid Bond check is 10 original questions weighted to the 12 subject areas, with every answer explained and your weakest area named, and no signup. For exam pace, the full course has full-length timed exams of 115 questions on the 330-minute clock.
A NASCLA practice test is only useful if it shows the working, tells you which subject area a question belongs to, and makes you find things in your books the way the real exam does. Work the three questions below, then see how to use your score by subject area.
What a good NASCLA practice test covers
PSI's Candidate Information Bulletin (updated 7 Jul 2026) splits the 115 scored questions into twelve subject areas. Procurement and Contracting Requirements carries 31 and General Requirements 25, so those two are almost half the exam. Site Construction has 15, and the other nine areas have 3 to 6 each. The exam is open book, 330 minutes long, and allows a silent, nonprinting, non-programmable calculator. A good practice set follows those weights, includes arithmetic you do with a calculator, and sends you to the right reference. The exam outline guide has the full table.
Try one question
Question 1 of the free 10-question check on NASCLA Commercial. No signup. Then ask Seal, the AI study assistant, why the answer is right and the others are wrong.
Procurement and Contracting Requirements
A subcontractor on a bonded public project has not been paid for completed work. Which bond is meant to protect it?
Press A-D or 1-4 to choose an answer while this question is on screen.
Choose an answer to begin
3 sample questions
These are original questions written to the published outline. They are not real or recalled exam items.
1. Procurement and Contracting Requirements (pricing a bid). Your estimated cost for a job, including overhead, is $80,000. You want a gross margin of 20% of the selling price. What should you bid?
- A. $96,000
- B. $100,000
- C. $64,000
- D. $16,000
Answer: B. Margin is a share of the selling price, so cost is 80% of the price. $80,000 divided by 0.80 is $100,000, and the $20,000 difference is 20% of $100,000. A adds 20% to cost, which is a 20% markup: $16,000 on $96,000 is only about a 16.7% margin. C takes 20% off the cost, which prices the job below cost. D is the markup amount alone, not a bid.
2. General Requirements (scheduling). Activity A takes 5 days. Activities B (8 days) and C (3 days) both start when A finishes. Activity D (4 days) starts when both B and C are finished. How much total float does activity C have?
- A. 0 days
- B. 3 days
- C. 5 days
- D. 8 days
Answer: C. The longest path is A, B, D: 5 + 8 + 4 = 17 days, so that is the critical path. C can start on day 5 and finish on day 8 at the earliest. D cannot start until B finishes on day 13, so C can finish as late as day 13 without delaying the job. 13 minus 8 is 5 days of float. A is the float of the activities on the critical path, not C. B is C's own duration. D is B's duration.
3. Metals (finding the right reference). Your crew is about to unload, store and set steel joists and joist girders. Which reference on the NASCLA list would you open first for handling and erection guidance?
- A. SJI Technical Digest No. 9, Handling and Erection of Steel Joists and Joist Girders
- B. PCI Erectors' Manual for precast concrete products
- C. BCSI, the guide to handling and bracing metal plate connected wood trusses
- D. SDI Manual of Construction with Steel Deck
Answer: A. Its title names exactly this work. B covers erecting precast concrete, not steel joists. C covers wood trusses. D covers the steel deck that is laid on the joists, not the joists themselves. On an open-book exam, getting to the right book in seconds is worth practicing as much as the content.
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The NASCLA Commercial course
Available now · instant accessLearn all 12 subject areas and where to look in your books, then prove it on timed practice exams.
- 12modules of lessonsEvery task on the outline
- 4full-length timed exams115 questions in 330 minutes each
- 472practice questionsEach one explained
- 1week-by-week study planSet to your exam date
Turn a practice answer into a study step. In untimed practice, ask Seal AI about any question you answer, follow up, then see your weakest topics and what to drill next.
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Every answer comes with a full explanation.
Practice by subject area, then under time
Start with the two big areas, because together they are 56 of 115 questions. Use the NASCLA study guide to work through the twelve areas over eight weeks, and the reference books guide to tab your books before you start timed sets. To weigh free and paid ways to prepare, see NASCLA study options.
Reading your practice score
A practice percentage is not a prediction of your exam result, ours or anyone's. Use it to decide where to spend the next study session: compare each subject area's score with its share of the 115 questions and work the heaviest area where you lost the most. Also note which misses came from not knowing and which came from not finding the answer in time. They need different fixes.
Take the free check
Start the free 10-question check. It covers the NASCLA subject areas, takes minutes, needs no signup, and explains every answer so you see your weak area before you book.
The NASCLA Commercial course has a lesson for each of the 12 subject areas that shows which listed reference to open and how to apply it, original practice questions with every answer worked, and four timed practice exams of 115 questions on a 330-minute clock. Your scores come back by subject area, so you know where the next study hour goes. See the course.
Not affiliated with or endorsed by NASCLA or PSI. NASCLA and PSI are named only to identify the exam and its test vendor.
FAQ
Is there a free NASCLA practice test?
Yes. The free 10-question check scores you by subject area and explains every answer, with no signup. A free 25-question timed mini-mock adds the clock.
How long is a full NASCLA practice exam?
115 questions on a 330-minute clock, the same as the scored part of the real exam. Every timed exam in the course uses that length and clock.
Are these real NASCLA exam questions?
No. Every question is original and written to NASCLA's published content outline. Real exam content is confidential and never used.
Sources
Show the list
- PSI Candidate Information Bulletin 1458, content outline and reference list, updated 7 Jul 2026. Retrieved 5 Nov 2026.
- NASCLA Commercial Exam, NASCLA. Retrieved 5 Nov 2026.
Facts come from the sources listed above. If something has changed, tell us and we will correct it within 2 business days.
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Start the free 10-question checkNASCLA Commercial course. Lessons, timed practice exams and a plan around your exam date. Get NASCLA Commercial course · $199 See the plans or read the free sample lesson.Terms and refunds
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Free tools for this topic
Prefer paper? Free printables
- Print a class quiz (free PDF). 10 practice questions with an answer key on page 2.
- Print the flashcards as cut-out cards (free PDF). The free flashcard sample, ready to cut and carry.
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