10.2 Part C (Code Application) Exam Strategies

Key Takeaways

  • Part B (Practical) and Part C (Code) are both open book and both scored at 72% — speed and navigation, not memorization, win them
  • Part B uses molded replica specimens plus the inspection kit (fillet, Bridge-Cam, V-WAC, hi-lo gauges) judged against the Book of Specifications and Book of Exhibits — 46 questions in 2 hours
  • Part C tests applying a code (AWS D1.1, API 1104, or ASME Section IX) to look-up scenarios; tab every key table and figure
  • On Part B, measure exactly (leg, throat, reinforcement, undercut, convexity) and accept/reject ONLY against the Book of Specifications, never memory
  • On Part C, identify the clause/table first, navigate by tab, read the actual code text, and trust it — do not assume
  • Practice both with a timer: find any major reference or take any gauge reading in under 30 seconds
Last updated: June 2026

Part B (Practical) — Gauges, Replicas, and the Book of Specs

Part B is the hands-on, open-book practical part: 46 questions in 2 hours, passed at 72%. AWS provides everything — you do not bring tools. You inspect molded plastic replica weldments (groove plate, fillet/T-joint, and a pipe specimen) using a calibrated inspection tool kit, then accept or reject each feature strictly against the Book of Specifications, with supporting documents in the Book of Exhibits. The whole part is a discipline test: measure precisely, then compare to the written spec — never to memory or field habit.

The inspection kit and what each tool reads:

ToolMeasures
Fillet weld gaugeLeg size and throat of fillet welds
Bridge-Cam gaugeReinforcement, fillet leg, undercut depth, angle of preparation
V-WAC (undercut) gaugeUndercut depth and surface porosity sizing
Hi-Lo gaugeInternal misalignment (high-low) on pipe
Dial caliper / ruler / protractorLengths, thickness, groove angle
Magnifier, mirror, flashlightSurface-flaw detection (cracks, porosity, overlap, IF)

What you measure and judge per replica:

FeatureToolAccept/reject basis
Fillet leg & throatFillet/Bridge-CamBook of Specifications min size
ReinforcementBridge-CamMax height per spec
UndercutV-WAC/Bridge-CamDepth limit per spec
Convexity/concavityBridge-CamProfile limits
Cracks, porosity, overlap, IFVisual + magnifierSpec acceptance limits

Part B traps: wrong gauge for the feature; reading the gauge from the wrong reference face; and — most common — judging by memory instead of the Book of Specifications. Always cite the spec line. Re-zero gauges, and report measured values to the precision the gauge allows.

Part C (Code Application) — Navigation Over Memory

Part C is open book against a chosen code — most candidates sit AWS D1.1 Structural Welding Code — Steel, but API 1104 (pipelines) and ASME Section IX are options. It is 50 scored questions plus pretest, and 72% passes. Because the code is in front of you, the exam tests how fast and accurately you can find and apply the right clause, table, or figure — not whether you memorized it.

Tab the code before exam day. A consistent color scheme turns a 90-second hunt into a 10-second flip:

TabD1.1 referenceContent
RedTable 5.3Approved base metals (groups)
BlueTable 5.4Matching filler metals
GreenTable 5.8Minimum preheat / interpass
YellowFigure 5.1Prequalified CJP groove joints
OrangeFigure 5.2Prequalified PJP groove joints
PurpleTable 7.7Minimum fillet weld size
PinkTable 8.1Visual acceptance criteria
BrownTable 8.2UT acceptance criteria
BlackClause 6Welder/WPS qualification

Common Part C question types:

TypeApproach
Table look-up (preheat, fillet size)Identify metal group, then cross-read thickness row
Acceptance criteriaTable 8.1; pick statically vs cyclically loaded column
Prequalification checkVerify ALL Clause 5 conditions — one miss = not prequalified
Joint detail (root opening, angle)Figures 5.1/5.2 by joint designation
Qualification rangeClause 6 tables — position, thickness, diameter limits
Repair/NDE timingClause 8

Memorize the structure, not the contents: which clause holds qualification, fabrication, and inspection. That mental map is what lets you go straight to the tab.

Open-Book Time Management and Step-by-Step Method

Both open-book parts pass at 72% and both reward a calm, repeatable routine. Time budgets:

PartScored QTimePacePass
B (Practical)46120 min~2.6 min/Q72%
C (Code)50~120 min~2.4 min/Q72%

That pace is generous only if your gauges and tabs are second nature. Build the habit now: set a timer and practice taking each gauge reading and finding each major table until both take under 30 seconds.

The six-step look-up loop (apply to every Part C item):

  1. Read the full question — pin down exactly what value or decision is asked.
  2. Identify the clause/table/figure needed (this is the make-or-break step).
  3. Navigate by tab — go straight to the reference.
  4. Read the actual code text/row — do not assume from memory.
  5. Match the answer to the code wording exactly.
  6. Move on — trust the code; do not second-guess.

Part C mistakes to avoid:

MistakePrevention
Answering from memoryAlways verify in the code, even when sure
Static vs cyclic mix-upRe-read the loading condition before choosing the column
Boundary thickness errorNote "up to and including" vs "over" — equal values matter
Partial prequalification checkA WPS is prequalified only if EVERY condition is met
Time sinkIf unfound in ~4 minutes, flag and move on

Part B/C Readiness Checklist (Last Cram Pass)

  • Take leg, throat, reinforcement, and undercut readings on a sample weld with the correct gauge, blind
  • Practice accepting/rejecting a feature by citing a specific Book of Specifications line
  • Confirm all code tabs are placed and labeled (5.3, 5.4, 5.8, 5.1, 5.2, 7.7, 8.1, 8.2, Clause 6)
  • Time yourself finding any major table — target under 30 seconds
  • Run the six-step look-up loop on 20 practice code questions
  • Verify which code edition the exam allows and tab THAT edition only
  • Plan to flag-and-return on any item exceeding ~4 minutes

For the exam: the single highest-payoff prep for both open-book parts is timed repetition — gauge readings for Part B, table navigation for Part C — until accuracy is automatic and speed is no longer a worry.

Test Your Knowledge

On Part B (Practical), what is the correct basis for accepting or rejecting a feature you measured on a replica weldment?

A
B
C
D
Test Your Knowledge

Why is fast code navigation the decisive skill on Part C rather than memorization?

A
B
C
D
Test Your Knowledge

Approximately how much time per question do you have on Part C (50 scored questions in about 120 minutes)?

A
B
C
D