Riveted joints

1. Riveted Joints

2. Introduction
• Fasteners are the thousands of bolts, nuts, screws, clips
and adhesives that hold a vehicle together
• Must be able to identify and use fasteners properly
• Each fastener is engineered for a specific application
• Always replace a fastener with exactly the same type
that was removed from the original equipment
manufacture (OEM) assembly

3. Introduction
Arivet is ashort cylindrical bar with ahead integral to it. The
cylindrical portion of the rivetis called shank or body
and lower portion of shank is known astail.
Therivets are used to make permanent fastening betweenthe
plates suchasin structural work, ship building, bridges, tanks
and boiler shells.
Theriveted joints are widely used forjoining light metals.
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4. Types of Rivet
Heads
04/04/13 HareeshaNGowda, DSCE,Blore-78 4

5. Type of Joints
Lap Joint (single Joint) But Joint

6. Types of riveted
joints
1. Lapjoint
2. Butt joint
• Lapjoint: Alap joint is thatin which one plate overlaps the
other and the two plates are then riveted together.
• Butt joint: Abutt joint is that in which the main plates are kept
in alignment butting (i.e. touching) each other and a cover
plate (i.e. strap) is placed either on one side or on both
sides of the main plates. Thecover plate is then riveted
together with the main plates.
Butt joint
Lapjoint 4

7. 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 seamas
shown in Fig. It is usually denoted byp.
2. Transverse pitch. It is the perpendicular distance between the
centre lines of the successive rows as shown in Fig. It is usually
denoted by pt.
3. Diagonal pitch. It is the distance between the centres of the
rivets in adjacent rows of zig-zag riveted joint asshown in Fig. 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 asshown in Fig.It is
usually denoted by m.
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8. Proportions of dimensions of riveted
joints
• Thickness of plate
t = Thickness of the
plate Diameter of
rivets.
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the diameter of the rivet hole (d) may be determined by
using
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• Distance of centre of the rivet from edge of the
plate = 1.5d
Margin , m=d
Longitudinal Pitch
p=3d
Transverse pitch pt = 0.8P for chain riveting
= 0.6P for zig-zag
riveting Thickness of butt strap.
Single cover plate t1 = 1.125 t 6

9. • Typesof Rivetedjoints
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10. • Double Riveted lapjoints
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11. • Double Riveted ZigzagLap joint
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12. • Single riveted, single strap butt joint

13. • Single riveted, double strap butt joint

14. • Double riveted, double strap chain buttjoint

15. • Double riveted, double strap zig zagbutt joint

16. Failure of bolted or riveted joints

17. Example 1

18. Example 2

19. Example 2

20. Example 3