For welders and inspectors sitting CWI Part C on D1.1
CWI Part C D1.1 course and practice exams
Open book, on the clock: find the right D1.1 clause fast.
Practice “How D1.1 is organized, and its design and materials rules” in the courseYou read the free sample for this module. The course has the full lesson and its practice questions, one at a time with the explanation after each answer.
Plans and prices
$445 to retake Part C at AWS vs $99 to prepare.
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Ask Tack about this course AI
Tap a question, or type your own. With Part C (D1.1) course with code-navigation trainer: up to 40 messages a day.
Answers come from this course's own plans and contents.
- Timed AWS D1.1 lookups, 8 a set, with your median time
- 2 timed exams at real length: 55 questions, 135 minutes
- 9 modules of lessons, each with a short check
Lifetime access, including your retake
The CWI exam fee is paid to AWS, not us: $1,255 for AWS members, $1,520 otherwise. An AWS retest costs $385 for Part B, $445 for A or C. Our prep for all three parts: $249. AWS 2026 price list.
Not ready? Try the free 10-question check
How this compares: price, renewal and refunds
Other options
Have my manager pay instead
Everything in Part C (D1.1) course with code-navigation trainer
Learn how D1.1 is laid out, drill finding clauses fast, then practice.
- Everything in the practice pack, plus:
- 9 lesson modules covering every task in AWS's Part C (D1.1) outline
- Timed lookups in AWS D1.1 by clause and table number, 8 a set, with your median time on each set
- A week-by-week study plan built from your free check and exam date
- Exam-day checklist: what to bring, allowed references and the calculator rules
- Written to AWS D1.1/D1.1M:2025
- Flashcards for every domain, with spaced review
- Code-book tab map
- Tack, your AI study assistant
Best if: You want a structured path to the D1.1 code exam.
What's covered
- How D1.1 is organized, and its design and materials rules (Outline topics C.5.1, C.5.2)
- Prequalified WPSs (Outline topic C.1.1)
- Qualifying a WPS by test (Outline topic C.1.2)
- Welder, operator and tack welder qualification (Outline topic C.1.3)
- Fabrication: preparation, preheat and fit-up (Outline topics C.2.1, C.2.2)
- Workmanship, repairs and distortion (Outline topic C.2.3)
- Visual inspection acceptance (Outline topic C.3.1)
- NDT and its acceptance criteria (Outline topic C.3.2)
- Reports and records (Outline topic C.4.1)
In Part C (D1.1) course with code-navigation trainer
- 381original questions
- 2timed exams at real length
- 9modules of lessons
- 8timed code lookups a set
See how Tack answers
A concave fillet weld's throat
Both legs of a fillet weld measure right on the gauge, but its face is dished in. What should you check next?
You: Why the throat? Both legs were the right size.
Tack: A dished-in face pulls the surface of the weld back toward the corner. So the shortest distance from the root to the face gets smaller, even while both legs still measure right. That shortest distance is what carries the load, so a concave weld can come up short with legs that look fine.
Key point: On a concave fillet, check the throat: it can fall short even when both legs measure right.
An original example, not an exam question. AI can be wrong, so check it against your course.
What members get
With the course and every bundle.
Today's 10 10 questions a day from your misses and your weakest domain, so what you got wrong comes back. Plus a missed set of up to 50.
A plan to your exam date Set your date and get a week-by-week plan you can add to your calendar in one tap.
Readiness by domain Your practice results against a 75% study target, and how they moved this week. A study target, not a pass prediction.
- Timed exams on the real clock. A live pace line, and Save and exit when you need a break. You pick up with the time you had left.
- Where your time went. After an open-book timed exam, your slowest questions become a practice set.
- Timed lookup sets. Code lookups timed in sets of 8, with your median time after each set.
- An exam-day guide. What to bring, the references you may use and the calculator rules.
- 381 original questions, every one explained. Review every miss after each timed exam. Practice sets show you the ones you haven't seen first.
- Wrong answer key? We fix it within 2 business days and log it publicly.
- One payment. No subscription, nothing renews.
- Didn't pass? Every plan except the 7-day pass has lifetime access. Your retake prep is already paid for.
Look inside the course
The screens you get after checkout, with sample answers.
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 setsSets of 8 D1.1 lookups against the clock, with your median time and how it moved since your last set. 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 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 10Ten questions a day, picked for you. A question you miss comes back on a later day until you get it right.
AWS exam registration fees
AWS exam fees are paid to AWS, not us. Our prices cover Fillet Gauge prep, not the exam.
The AWS non-member exam-registration price includes 3 years of AWS membership; the AWS all-parts exam-registration fee includes Prometric seat fees.
AWS price listInstant access. Everything in the plan you choose opens as soon as checkout completes.
The free check uses the same question style and explanations as the course.
See the teaching before you buyRead a complete lesson from the course, “How D1.1 is organized, and its design and materials rules”, and try a short practice set with full explanations. Free, no signup.
Read the free lessonWhat the course covers
9 modules, mapped to the task numbers in American Welding Society's published Part C (D1.1) content outline. Taught to AWS D1.1/D1.1M:2025.
- How D1.1 is organized, and its design and materials rules (Outline topics C.5.1, C.5.2)Navigating the on-screen code by clause number · Where design and connection rules sit · Base metals and filler metals in the code
- Prequalified WPSs (Outline topic C.1.1)What makes a WPS prequalified · Prequalified joint details and their figures · Prequalified preheat and process limits
- Qualifying a WPS by test (Outline topic C.1.2)Test coupons, positions and the tests required · Essential variables and qualified ranges · Acceptance of procedure test results
- Welder, operator and tack welder qualification (Outline topic C.1.3)Performance tests and what they qualify · Period of effectiveness and requalification
- Fabrication: preparation, preheat and fit-up (Outline topics C.2.1, C.2.2)Base metal preparation and joint fit-up tolerances · Preheat and interpass temperature in practice · Consumable storage and control in the fabrication clause
- Workmanship, repairs and distortion (Outline topic C.2.3)Weld profiles and workmanship rules · Repairs, removal of defects and heat straightening
- Visual inspection acceptance (Outline topic C.3.1)Finding the visual acceptance table for the connection type · Statically and cyclically loaded criteria compared
- NDT and its acceptance criteria (Outline topic C.3.2)When NDT is required and who performs it · Radiographic and ultrasonic acceptance criteria · Magnetic particle and penetrant testing in the code
- Reports and records (Outline topic C.4.1)Inspection records and what they must show · Qualification records and record retention
Questions
When do I get access?
Straight away. Checkout takes you to your course, and the receipt email has the same link.
How do I get back into my course?
Use the link in your receipt email. If you can't find it, enter your email on the course page and we resend it to the address on your order.
Is 381 questions enough?
Each one comes with a worked explanation and its reference. You also get 27 end-of-module checks and timed code-lookup drills in sets of 8. Today's 10 and your missed set bring your misses back on later days, so you work the bank instead of reading it once.
Can I get a refund?
Eligibility depends on your plan, when you request a refund and your paid use. See the refund terms for the conditions and exceptions.
How long do I keep access?
Lifetime access: your access has no end date. Updates are included, so if American Welding Society moves this exam to a newer code edition while you have access, your course moves with it. The 7-day pass is the exception. 7-day pass: access ends 7 days after payment, to the minute. It does not renew and is not a subscription. A timed practice exam started before then can still be finished.
Which editions does the course use?
The questions are written to AWS D1.1/D1.1M:2025. The timed lookup drills follow the D1.1 2020 clause layout, and the lookup page says so.
More questions (14)
If I buy the 7-day pass now, is its price taken off a bigger plan later?
No. Each plan is a separate purchase at its listed price, and the $29 paid for the 7-day pass is not credited toward another plan. With more than a week before your exam, a full plan is the better buy.
What is the difference between the practice pack and the course?
The practice pack is the question bank and the timed practice exams. The course adds a lesson for every task in American Welding Society's content outline, code-navigation drills, a study plan built from your free 10-question check and an exam-day checklist. If any domain scored under about 60%, take the course.
Are the questions copied from the exam?
No. Every question is original and written to American Welding Society's published content outline. Exam content is confidential and we never use it. We are not affiliated with or endorsed by AWS, ICC or AISC.
How are the questions written?
In our own words, to AWS's current published outline. See how many questions cover each domain.
Do I need my own copy of AWS D1.1?
For Part C, no. AWS provides D1.1:2025 on screen as a PDF, so you do not need a printed copy. The course cites sections by number so you practice finding them, and we never reproduce the code's text. Parts A and B need no copy: Part A is closed book and Part B gives you its Book of Specifications.
What is the Part B task?
You judge weld replicas with a gauge kit against a specification, the AWS Book of Specifications. That is the task our Part B course trains.
In what order do I take the three parts?
Part B comes first. You book it with your application, at an AWS test site, in one of three fixed daily groups that check in at about 7:00 a.m., 10:45 a.m. or 2:45 p.m. Late arrivals are not moved to another group. About 4 to 6 weeks after you apply, AWS emails a confirmation letter with the eligibility codes you use to book Parts A and C at Prometric.
What score do I need to pass?
AWS requires 72% on each part and 72% overall, the average of the three parts. Scores are rounded down to the nearest whole percent.
What if I need a retest?
Your access has no end date, so your course, your scores and your missed set are still there. AWS allows up to 3 retests in 3 years from your first test date. The second and third need proof of more training first. A Part C retest uses the same code as your first Part C.
Why is this so much less than a seminar?
We teach online, so there is no classroom, travel or time off work. You get lessons, drills and timed exams on your phone or computer, and they stay yours.
What does the CWI exam fee cover?
AWS prices members and non-members separately. The non-member price includes a 3-year AWS membership. The all-parts fee also includes the Prometric seat fees, $60 each for Parts A and C.
Can my employer pay?
Yes. Pay at checkout and we email a receipt you can expense, or download a reimbursement request to send your manager.
Is Tack AI?
Yes. Tack is an AI study assistant, not a person or an instructor. Check important details against your lessons and references.
Can you promise I will pass?
No, and nobody honest can. We promise everything listed in your plan, and a fix within 2 business days for any wrong answer key.
Employer paying?
Many employers fund CWI Part C D1.1 prep. Generate a reimbursement request PDF to send to your manager. Buying for a crew? Request a quote