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AWS D1.1 Structural Welding Code Flashcards

6 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. AWS D1.1 requires that welding procedure specifications (WPS) include which essential variables?

    Answer: Process, joint design, base metal, filler metal, position, preheat, and PWHT

    A WPS under AWS D1.1 must document all essential variables: welding process, joint design/geometry, base metal group, filler metal classification, welding position, preheat/interpass temperature, and post-weld heat treatment if applicable.

  2. Under AWS D1.1, what is the minimum preheat temperature for ASTM A572 Grade 50 steel, 1.5 inches thick, welded with SMAW using E7018?

    Answer: 150°F

    AWS D1.1 Table 4.5 requires 150°F (65°C) minimum preheat for A572 Grade 50 (Group II steel) at thicknesses over 1.5 inches with low-hydrogen electrodes.

  3. According to AWS D1.1, the minimum fillet weld size for a base metal thickness of 3/4 inch is:

    Answer: 1/4 inch

    AWS D1.1 Table 6.1 specifies a minimum fillet weld size of 1/4 inch for base metal thicknesses from 1/2 inch through 3/4 inch.

  4. Porosity acceptance criteria under AWS D1.1 for statically loaded non-tubular connections limit visible porosity to:

    Answer: Maximum 3/8-inch diameter individual pores and total area not exceeding 3/8 inch in any linear inch

    D1.1 Clause 6.9.2 limits visible porosity for statically loaded structures to maximum 3/8-inch diameter for any individual pore and aggregate porosity not exceeding 3/8 square inch in any 1-inch length of weld.

  5. Under AWS D1.1, a welder who passes a groove weld qualification test in the 3G position is also qualified to weld in which positions?

    Answer: 1F, 2F, 3F, 1G, and 2G (flat, horizontal, and all fillet weld positions)

    Per AWS D1.1 Table 4.12, passing a 3G (vertical groove) qualification qualifies the welder for flat (1G/1F), horizontal (2G/2F), vertical (3G/3F) groove and fillet weld positions.

  6. What action is required when a weld is found to contain a crack under AWS D1.1?

    Answer: Stop welding, notify the engineer, completely remove the crack, and repair per approved procedure

    AWS D1.1 categorically prohibits cracks in welds (Clause 6.9.1). Any crack found requires work stoppage, notification of the responsible engineer, complete crack removal (verified by NDE), and repair using an approved WPS.