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For welders and inspectors sitting CWI Part C on D1.1

CWI Part C D1.1: know where to find it fast

Free CWI Part C D1.1 practice: 10 questions, answers explained as you go, score by domain.

Free 10-question check

Full course $99: 381 practice questions, each explained. See the course

Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

Question 1 of 10 · free checkUntimed

Inspection

What is an image quality indicator (IQI) used for in radiographic testing?

Press A-D or 1-4 to choose an answer while this question is on screen.

Choose an answer to begin

The free check uses the same question style and explanations as the course.

Part C puts D1.1 on screen with word search off, so finding the clause fast is the skill. Start with a free 10-question check, every miss explained.

Before you start: allow about 25 minutes, and have your own D1.1 copy open. Each question points you to a clause, and the code text is not on this site.

  • 10 questions, untimed
  • Answers explained as you go
  • Scored by domain
Ask Tack AI Explains your misses, answers from this course, and builds practice from your weak spots.Try it free: 3 asks on the free check, 10 more with your email. What Tack can do

Want a timed run? Try the free 25-question mini-mock. The first 5 need no email.

Every question is original and written to American Welding Society's published content outline.

How it works

  1. Answer 10 questions, freeUntimed. Check each answer to see why it's right, with a hint where one helps.
  2. See your score by domainBroken down by outline domain, with your weakest one named.
  3. Study what you missedAdd your email and exam date for a study plan, or practice at exam pace.

    Want exam pace? Take the 25-question practice test (about 61 minutes)

The CWI Part C D1.1 course

Available now · instant access

Learn how D1.1 is laid out, drill finding clauses fast, then practice.

  • 9modules of lessonsEvery task on the outline
  • 2full-length timed exams55 questions in 135 minutes each
  • 381practice questionsEach one explained
  • 8timed code lookups a setFind it fast in AWS D1.1, with your median time
  • 1week-by-week study planSet to your exam date

Tack, your AI study assistant, comes with the CWI Part C D1.1 course and every bundle: a week-by-week plan from your exam date and weak areas, step-by-step walk-throughs and a weak-spot quiz. Up to 40 messages a day.

  • My study plan: a week-by-week course from your exam date and weak areas, with today's set ready. Lose a week and I re-plan it
  • Stuck on a question? Tap Walk me through it, Explain like I'm new or Show a worked example
  • A quiz on your weak spots, your misses back on a spaced review, and explain it back to me to lock it in
  • After 30 answers, I show you the patterns in your misses and a practice set for each one
  • Exam week: a day-by-day plan for your last 7 days
See all 9 modules
  1. How D1.1 is organized, and its design and materials rules
  2. Prequalified WPSs
  3. Qualifying a WPS by test
  4. Welder, operator and tack welder qualification
  5. Fabrication: preparation, preheat and fit-up
  6. Workmanship, repairs and distortion
  7. Visual inspection acceptance
  8. NDT and its acceptance criteria
  9. Reports and records
Part C (D1.1) course with code-navigation trainer$99Get the Part C course · $99

Instant access. Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

Compare plans

Bundles

Look inside the course

The screens you get after checkout, with sample answers.

  • D1.1 clause-finding drills
    Course practice screen for CWI Part C. A question asks which D1.1 clause to open first for a tubular connection design question. The correct clause is marked and the explanation says where each other clause sits.
    D1.1 clause-finding drillsPractice opening the right clause first, the skill that matters when the exam's code PDF has no word search.
  • Timed lookup sets
    Finished lookup set screen for CWI Part C. It shows the median seconds per lookup, 8 of 8 matched, the change in seconds against the last set and the number of sets finished.
    Timed lookup setsSets of 8 D1.1 lookups against the clock, with your median time and how it moved since your last set.
  • Timed Part C exam
    Timed practice exam screen for CWI Part C with a countdown clock, a flag-for-review button and a numbered question navigator that marks answered and flagged questions.
    Timed Part C exam55 questions on the 135-minute clock, a flag on every question and a navigator that shows what you answered and flagged.
  • Readiness by domain
    Readiness by domain panel for CWI Part C with an accuracy bar per domain. Each domain is marked on track or needs work with its accuracy and answers given, and a link to drill the weakest one. It ends with the line that these are practice results only.
    Readiness by domainEach Part C domain rated from your own practice answers, with a one-click drill into the one that needs work. Practice results only, never a prediction of the real exam.
  • Today's 10
    Today's 10 card on the course home for CWI Part C. It reads 10 questions picked for you, 3 missed questions and 7 from your weakest domain, and says a question leaves the set when you answer it right on a later day. A button below starts a timed lookup set.
    Today's 10Ten questions a day, picked for you. A question you miss comes back on a later day until you get it right.

Every answer comes with a full explanation.

AI study assistant

Ask Tack why an answer is right

AI study assistant

Tack AI

Tack is your AI study assistant. Answer a question, then ask Tack why.

Example

Why is that one wrong?

TackI'll show you why the right answer works, why each other option falls short, and where to look it up.

Example of how I explain. Answer question 1, then tap Ask Tack why. 3 free asks, 10 more with your email. I'm AI, so check important details against your references. Meet Tack

Answer question 1, then ask me why

Email me the free CWI Part C D1.1 exam-day kit

What to bring, arriving and the testing room, plus the booking steps, from the exam body's own candidate guide. Sent to your inbox.

Exam at a glance

Format
55 questions in 135 minutesBook: open book; D1.1 PDF provided on screen (English only); AWS recommends navigating it by bookmarks, but some PDF navigation features may be disabled by Prometric, so whether bookmarks stay clickable is unconfirmed; word search NOT enabled; printed bound copy also permitted for D1.1 per the endorsement description
Delivery
Prometric CBT. The D1.1 codebook is provided as an on-screen PDF (word search disabled; some PDF navigation may be disabled, so navigate by clause number and table of contents). A bound printed D1.1 copy is also permitted (D1.1 endorsement description Rev 10.14.2025 and AWS Exam References Guide 1 Aug 2025).
Exam fee (paid to AWS, not us)
Included in initial CWI exam fee ($1,255/$1,520). As a stand-alone D1.1 endorsement: $445 member / $540 non-member. Part C retest: $445.
Retakes
Must retest with the same code within the 3-year retest period; general CWI retest limits apply (3 retests in 3 years; training for 2nd/3rd)

What it covers

Qualification25%
Fabrication25%
Inspection25%
Reports and Records5%
Materials and Design5%

The free 10-question check follows these domains, subject to the available practice questions.

Practice test FAQ

How long is the free 10-question check?

The free check has 10 questions, is untimed and takes about 25 minutes. You see the answer and explanation after each question. It is a short study check, rather than a full-length exam simulation. Want exam pace? The 25-question timed practice test is also free. You can pause it, and it saves your place.

Is this a free CWI practice test for every part?

Choose Part A for fundamentals, Part B for the practical, or Part C on D1.1, D1.5 or API 1104. Already a CWI or SCWI? The WPQ2 endorsement has its own check too. Each has its own free check and outline. Part B questions send you into the Book of Specifications, as the exam does, and every miss is explained so you know where to look next time.

Is the 10-question check free?

Yes. You can start the check and see your score and weakest domain for free, with no signup or payment. Your score in each domain unlocks when you add your email.

Where does the practice content come from?

Every question is original and written to AWS's published outline. Treat the results as a starting point for study.

How is the check scored?

Practice items are grouped by the published outline's domains, subject to available questions. The check weights domain results using the configured published outline weights. This practice percentage helps set study priorities; it does not predict your exam score or certification outcome.

What do I see after finishing?

You get your score, the published pass mark and how many more correct answers would reach it, your weakest domain and what the CWI Part C D1.1 course holds for it. Add your email to see your score in each domain and get a free study plan.

How should I use the result to study?

Start with your weakest domain. The CWI Part C D1.1 course has lessons, explained practice questions and timed exams on it. Want to test your pace first? Take the free 25-question practice test.

The Fillet Gauge app for iPhone and AndroidToday's questions and your study plan in your pocket. Fillet Gauge already works in your phone's browser today.

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