in Fig. 1.11. Figure 1.11(a) shows two plates that are joined by a rivet. As seen in the FBD, the rivet must carry the shear force V ¼ P. Because only one cross section of the rivet resists the shear, the rivet is said to be in single shear. The bolt of the clevis in Fig. 1.11(b) carries the load P across two cross-sectional areas, the shear force being V ¼ P=2 on each cross section. Therefore, the bolt is said to be in a state of double shear. In Fig. 1.11(c) a circular slug is being punched out of a metal sheet. Here the shear force is P and the shear area is similar to the milled edge of a coin. The loads shown in Fig. 1.11 are sometimes referred to as direct shear to distinguish them from the induced shear illustrated in Fig. 1.9.