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CWI D1.1 Design, Materials and Records practice questions

Navigating AWS D1.1 Clauses 1 to 4, base metal and filler metal tables, stud welding and the records the code requires. This domain is about 10% of the exam. Try each question, then open the answer.

Read the D1.1 Design, Materials and Records study guide

Question 1

A project involves welded repair and strengthening of an existing steel building. Which clause of AWS D1.1:2020 specifically addresses this?
  1. Clause 11 (existing structures)
  2. Clause 10 (tubular structures)
  3. Clause 9 (stud welding)
  4. Clause 7 (fabrication and repairs)
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Answer: A. Clause 11 (existing structures)

Clause 11 (Clause 8 in D1.1:2015) covers evaluating, strengthening and repairing existing structures, including base metal evaluation and fatigue considerations.

Source: AWS D1.1/D1.1M:2020, Clause 11 (Clause 8 in D1.1:2015)

Question 2

Under AWS D1.1:2020, what is the effective weld size (throat) of a CJP groove weld joining a 3/4 in. plate to a 1 in. plate?
  1. 1 in., the thicker part
  2. 7/8 in., the average
  3. 5/8 in., the bevel depth less 1/8 in.
  4. 3/4 in., the thickness of the thinner part
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Answer: D. 3/4 in., the thickness of the thinner part

The weld size of a CJP groove weld is the thickness of the thinner part joined. Reinforcement is not counted.

Source: AWS D1.1/D1.1M:2020, Clause 4, Design of Welded Connections (Clause 2 in D1.1:2015), effective areas of groove welds

Question 3

Before production welding starts on a D1.1 project, which records show the inspector that the welding procedures and the welders are qualified?
  1. The mill test reports and filler metal certificates only
  2. The WPSs, with any PQRs, and the welders' qualification records
  3. The NDT procedures and technicians' certificates
  4. The shop drawings and the erection sequence only
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Answer: B. The WPSs, with any PQRs, and the welders' qualification records

Clause 8, Part A has the inspector confirm that each WPS meets the code, with a PQR where it was qualified by test. The inspector also confirms that the welders, welding operators and tack welders are qualified for the work. The inspector keeps records of these qualifications.

Source: AWS D1.1/D1.1M:2020, Clause 8, Part A (inspection of WPSs, welder qualifications and records)

Question 4

Under AWS D1.1:2020, what is the minimum length of each segment of an intermittent fillet weld?
  1. 1 in.
  2. 1-1/4 in.
  3. 1-1/2 in.
  4. 2 in.
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Answer: C. 1-1/2 in.

Each segment of an intermittent fillet weld must be at least 1-1/2 in. long. The general minimum effective length of fillet welds still applies as well. See the Clause 4 provisions on intermittent fillet welds.

Source: AWS D1.1/D1.1M:2020, Clause 4, Design of Welded Connections (Clause 2 in D1.1:2015), intermittent fillet welds, minimum length

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