CWI Codebook Navigation and Application 3 — Questions and Answers
Question 1: In AWS D1.1, what is the purpose of the Essential Variables listed in Section 5?
- They define the minimum number of test specimens required
- They specify changes that require requalification of the WPS (Correct answer)
- They list the acceptable base metal groups
- They describe the order of welding passes
Correct answer: They specify changes that require requalification of the WPS
Essential variables are parameters whose change beyond specified limits requires requalification of the welding procedure specification.
Question 2: An inspector is looking up the RT acceptance criteria for a complete joint penetration groove weld in a statically loaded non-tubular structure per AWS D1.1. Which table applies?
- Table 6.1
- Table 6.2 (Correct answer)
- Table 6.3
- Table 6.4
Correct answer: Table 6.2
Table 6.2 in AWS D1.1 provides RT acceptance criteria for statically loaded non-tubular connections.
Question 3: The AWS D1.1 code index lists 'porosity, pipe.' Where would a CWI look to find this entry in the index?
- Under 'D' for defect
- Under 'P' for porosity (Correct answer)
- Under 'W' for weld discontinuity
- Under 'I' for imperfection
Correct answer: Under 'P' for porosity
Code indexes are alphabetical; 'porosity' is the primary term and 'pipe' is a sub-entry under 'P'.
Question 4: When AWS D1.1 references 'See 4.12.3,' this notation means:
- Section 4, Figure 12, Note 3
- Section 4, Clause 12, Sub-clause 3 (Correct answer)
- Section 4, Table 12, Column 3
- Section 4, Page 12, Paragraph 3
Correct answer: Section 4, Clause 12, Sub-clause 3
AWS D1.1 uses a decimal numbering system where the first digit is the section, second is the clause, and third is the sub-clause.
Question 5: A welder qualifies using a test plate with 3/8-inch thickness. Per AWS D1.1, what maximum production weld thickness is the welder qualified for on groove welds?
- 3/8 inch only
- 3/4 inch
- Unlimited (Correct answer)
- 1/2 inch
Correct answer: Unlimited
Per AWS D1.1, a welder who passes a test on plate 3/8 inch or greater is qualified for unlimited thickness in production.
Question 6: In AWS D1.1, which normative annex provides guidance on the approved base metals and their groupings for prequalified use?
- Annex A (Correct answer)
- Annex B
- Annex F
- Annex M
Correct answer: Annex A
Annex A of AWS D1.1 is a normative annex that lists the approved base metals and their applicable prequalified WPS groups.
Question 7: When a code clause states 'unless otherwise specified by the Engineer,' this means:
- The engineer must always specify otherwise in writing
- The code requirement is the default unless the engineer provides a different requirement (Correct answer)
- The engineer's specification overrides all safety requirements
- Only licensed structural engineers may modify the requirement
Correct answer: The code requirement is the default unless the engineer provides a different requirement
This phrase establishes a code default that the Engineer of Record may modify for a specific project, giving flexibility while maintaining a safety baseline.
CWI Codebook Navigation and Application 3
In AWS D1.1, what is the purpose of the Essential Variables listed in Section 5?