AWS AWS D1.1 Structural Welding Code 2

Question 1

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

Accepted Answer

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

Answer

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.

Question 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?

Accepted Answer

150°F

Answer

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.

Question 3

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

Accepted Answer

1/4 inch

Answer

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.

Question 4

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

Accepted Answer

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

Answer

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.

Question 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?

Accepted Answer

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

Answer

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.

AWS Practice Test

AWS Practice Test

AWS AWS D1.1 Structural Welding Code 2