30 Shielded Metal Arc Welding Copyright Goodheart-Willcox Co., Inc. May not be reproduced or posted to a publicly accessible website. Figure 5-10. The four welding positions. Goodheart-Willcox Publisher Flat Position 1 Vertical Position 3 Overhead Position 4 Horizontal Position 2 The positions are also described by a letter and type of weld. They are as follows: • Flat: 1 • Horizontal: 2 • Vertical: 3 • Overhead: 4, Figure 5-10. Two letters are used to describe the type of weld: G for groove and F for fi llet. For example, a groove weld made in the horizontal position would be designated 2G.