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Figure 1.5 shows the basic weld joint designs in fusion welding: the butt, lap, T‐, edge, and corner joints. Figure 1.6 shows the transverse cross sections of some typical weld joint variations. The surface of the weld is called the face, the two junctions between the face and the workpiece surface are called the toes, and the portion of the weld beyond the workpiece surface is called the reinforcement. Figure 1.7 shows four basic welding positions.

Figure 1.5 Five basic types of weld joint designs.

Figure 1.6 Typical weld joint variations.

Figure 1.7 Four welding positions.