CWI Codebook Navigation and Application 4 — Questions and Answers
Question 1: A CWI needs to find the prequalified joint detail for a single-V groove weld made from one side without backing. Which Figure series in AWS D1.1 covers this joint type?
- Figure 4.1 series (Correct answer)
- Figure 4.2 series
- Figure 4.3 series
- Figure 4.4 series
Correct answer: Figure 4.1 series
AWS D1.1 Figure 4.1 series covers prequalified CJP groove weld joint details for various joint configurations including single-V without backing.
Question 2: In AWS D1.1, what does the designation 'B-U2' in a joint detail designation mean?
- Butt joint, groove weld, second revision
- Butt joint, U-groove weld, second figure
- B indicates butt joint type, U indicates U-groove weld configuration (Correct answer)
- B indicates backing, U indicates unbacked
Correct answer: B indicates butt joint type, U indicates U-groove weld configuration
AWS D1.1 joint designations use letters to identify joint type (B=butt, C=corner, T=T-joint) and groove shape (U=U-groove, V=V-groove, etc.).
Question 3: Which section of AWS D1.1 contains the requirements for WPS qualification by testing (as opposed to prequalification)?
- Section 3
- Section 4
- Section 5 (Correct answer)
- Section 6
Correct answer: Section 5
Section 5 of AWS D1.1 covers the qualification of welding procedures by testing, including required test specimens and acceptance criteria.
Question 4: A footnote in an AWS D1.1 table states 'See 5.22.1 for exceptions.' How should the CWI handle this footnote?
- Ignore footnotes unless they are labeled 'mandatory'
- Read the referenced clause to determine if an exception applies to the current situation (Correct answer)
- Apply the exception automatically to all similar cases
- Report the exception to the engineer before proceeding
Correct answer: Read the referenced clause to determine if an exception applies to the current situation
Footnotes are part of the code and must be read; the inspector must determine whether the referenced exception is applicable to the specific situation.
Question 5: The AWS D1.1 code contains both AWS D1.1 and AWS D1.1M designations. What does the 'M' signify?
- The code has been modified for offshore applications
- The code uses SI (metric) units (Correct answer)
- The code applies only to military structures
- The code is a mandatory government standard
Correct answer: The code uses SI (metric) units
The 'M' suffix in AWS standard designations indicates the metric (SI) version of the document, using millimeters, degrees Celsius, and other SI units.
Question 6: In AWS D1.1, Table 4.2 lists 'Matching Filler Metal Requirements.' What is the practical use of this table?
- To select filler metals that meet yield strength requirements for the base metal being welded (Correct answer)
- To list filler metals exempt from WPS qualification
- To identify filler metals that can be used without preheat
- To determine the maximum interpass temperature by filler metal classification
Correct answer: To select filler metals that meet yield strength requirements for the base metal being welded
Table 4.2 pairs base metal groups with filler metal classifications that provide matching or overmatching mechanical properties for prequalified WPS use.
Question 7: When AWS D1.1 states a dimension 'as detailed,' what is required of the inspector?
- Use the nearest standard dimension from the code tables
- Verify the dimension against the approved engineering drawings, not the code (Correct answer)
- Apply a ±1/16-inch default tolerance
- Accept any dimension that falls within general workmanship standards
Correct answer: Verify the dimension against the approved engineering drawings, not the code
'As detailed' means the dimension is defined by the approved project drawings, and the inspector must compare actual measurements against those drawings.
CWI Codebook Navigation and Application 4
A CWI needs to find the prequalified joint detail for a single-V groove weld made from one side without backing.
Which Figure series in AWS D1.1 covers this joint type?