For prequalified fillet welds using SMAW under AWS D1.1, the maximum size of a single-pass fillet weld in the flat or overhead position is:

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Multiple choice — select the best answer

A3/8 in (9.5 mm)
B1/4 in (6.4 mm)
C5/16 in (7.9 mm)
D1/2 in (12.7 mm)

✓ Correct answer: B. 1/4 in (6.4 mm) AWS D1.1 limits single-pass SMAW fillet welds in the flat (1F) and overhead (4F) positions to 1/4 in (6.4 mm) maximum. The 5/16 in limit applies to the horizontal position. Exceeding these sizes requires multiple passes.

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Topic: Codes & Standards

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For prequalified fillet welds using SMAW under AWS D1.1, the maximum size of a single-pass fillet weld in the flat or overhead position is:

Related questions — Codes & Standards

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