AWS AWS D1.1 Structural Welding Code 5

Question 1

AWS D1.1 requires that groove weld root openings exceeding the code tolerance by more than 1/16 in (1.6 mm) but not more than 1/4 in (6 mm) must be:

Accepted Answer

Built up with weld metal before final welding

Answer

AWS D1.1 allows oversized root openings up to 1/4 in to be corrected by building up the joint edges with weld metal before proceeding with final welding.

Question 2

In AWS D1.1, the term 'essential variable' in a welding procedure specification refers to a variable whose change requires:

Accepted Answer

Requalification of the WPS by welding and testing

Answer

Essential variables are those that significantly affect weld mechanical properties; changing them requires complete WPS requalification through testing per AWS D1.1 Clause 4.

Question 3

According to AWS D1.1, which type of weld joint is prohibited from being used as a prequalified joint for primary tension members in cyclically loaded structures?

Accepted Answer

CJP groove welds with backing bars left in place

Answer

AWS D1.1 prohibits steel backing bars left in place on CJP groove welds in primary tension members of cyclically loaded structures due to stress concentration.

Question 4

When AWS D1.1 specifies radiographic testing (RT) acceptance criteria, which measurement is used to evaluate elongated porosity (worm tracks)?

Accepted Answer

Maximum length in any 12-inch weld segment

Answer

AWS D1.1 evaluates elongated slag inclusions and porosity by their maximum length within any 12-inch (300 mm) length of weld.

Question 5

Under AWS D1.1, a welder who fails a qualification test in the 2G (horizontal) position is:

Accepted Answer

Required to receive additional training before retesting

Answer

AWS D1.1 Clause 4 states that a welder who fails a qualification test must receive additional training or practice before being retested.

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AWS AWS D1.1 Structural Welding Code 5