types of riveted joints

Riveted joints are classified as :

(1) Lap Joints

(2) Butt joints

1. Lap joints : A lap joints is a connection in which the members joined lap or overlap on each other. The  joints may have one or more row of rivets. In the case of lap joint, the lines of forces are eccentric which develop bending stresses and therefore, have the tendency to deform.

The bending of the plates and the rivet tends to weaken the joint.

Lap joints are further classified according to the number of rivets used and the arrangement of rivet adopted.

(1) Single riveted lap joint

(2) Double riveted lap joint

    (a) Chain riveted

    (b) Zig-Zag riveted

(1) Single riveted lap joint : A lap joint having only one row of rivets is called single riveted lap joint.

(2) Double riveted lap joint : A lap joint having two rows of rivet is called as double riveted lap joint.

    Butt Joint : A butt joints in which the ends of the member that join, come together or butt against each other. Butt joints are two types.

    (1) Single cover butt joint

    (2) Double cover butt joint

(1) Single cover butt joint : In this case, cover plate is provided on one side of main plate. It has pull P as eccentric with respect to cover plate and hence tend to deform due to bending.

(2) Double cover butt joint : In this case, cover plate are provided on either side of the main plants. There is no possibility of the development of bending stress and deformation of this joint. Such joints are further classified according to the number of rivets used and the arrangement of rivets adopted. Following are the different types of butt joints.

    (a) Double cover single riveted butt joint

    (b) Double cover double riveted butt joint

    (c) Double cover Zig-Zag riveted butt joint

    (d) Diamond riveted butt joint