How Do Rivets Works..?



A rivet is a short cylindrical shaft with a head on one end. These cylindrical portion is called Shank or body and the other end of the rivet is called Tail. Rivets are used to connect two or more plates inserted through the hole in plates and pressed on the other side. Riveted joints play an important part in forming the joints, between a big structures like Boiler shells,  Air crafts, Ship Building,bridges,Tanks etc..
The riveted joints mainly used to join the light metals.

Riveted Joints : 

Basically the major Riveted Joints are widely used depending upon the way in which the members are connected.
Following are two types of riveted joints:

1. Lap joint, and 
2. Butt joint.

Lap Joint: 

A "Lap joint" is that in which the the edges of plates are simply lied over each other and riveted.

Butt Joint:

A “Butt joint” is that in which the  plates are lie in same plane as main plates are kept in alignment butting(i.e.touching) each other and a cover plate (i.e.strap) is placed on one side or on both sides of main plates. And joined through cover plates then riveted together with the main plates. 

Important Terms Used in Riveted Joint : 

Following are important terms used in riveted joint : 
1. Pitch : 
It is the distance from center of one rivet to the center of the next rivet measured parallel to the seam. 
2. Back pitch : 
It is the perpendicular distance between the center lines of the successive rows. 
3. Diagonal pitch : 
It is the distance b/w the center of the rivets in the adjacent rows of zigzag riveted joint. 
4. Margin or marginal pitch : 
It is distance between the center of rivet hole to the nearest of the plate.

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