Important Terms Used in Riveted Joints

The following terms in connection with the riveted joints are important from the subject point of view :

1. Pitch: It is the distance from the centre of one rivet to the centre of the next rivet measured parallel to the seam as shown in Fig. 9.6. It is usually denoted by p.
2. Back pitch: It is the perpendicular distance between the centre lines of the successive rows as shown in Fig. 9.6. It is usually denoted by pb.
3. Diagonal pitch: It is the distance between the centres of the rivets in adjacent rows of zig-zag riveted joint as shown in Fig. 9.6. It is usually denoted by pd.
4. Margin or marginal pitch: It is the distance between the centre of rivet hole to the nearest edge of the plate as shown in Fig. 9.6. It is usually denoted by m.