Page 162 - CITS - ED - Mechanical

ENGINEERING DRAWING - CITS

Single cover plate thickness
1.125 t = say 40 mm
Pitch of rivets = 3d = 108 mm
Row pitch for chain riveting = 2d + 6 = 78
• Draw the plates in position with single cover plate.

• Mark the centre of rivets and draw rivets.
• Hatch the plates.
• Project and draw the top view showing minimum 3 rivets in a row.
• Show the broken end of the plates.

• Dimension the views. (Fig 8)

Fig 8

Exercise 8.33

Single riveted (Double strap) butt joint (Fig 9)
Draw single riveted double strap butt joint (chain). Plate thickness 25 mm.
Calculate the rivet dia, pitch, distance etc.
Double cover plate thickness (0.6 t to t)

Average = 0.8t
0.8 t = 20 mm
• Draw the main plates and cover plates in position.
• Mark two rows of rivets with distance as shown in Fig 9.

149

CITS :Engineering Drawing (Mechanical) - Exercise 8