Page 161 - CITS - ED - Mechanical

ENGINEERING DRAWING - CITS

(2p d)
Diagonal pitch (pd) = 3 = = 84 mm
Margin = d = 36 mm or lap (l) = 1.5d = 54 mm

• Draw the plates as in previous exercise and mark centre lines at Pr = 78 or 86 mm, draw rivet heads.
• Mark the ends of the plates.
• Project on to top view, mark three rivet centres at distance. (108 mm)
• Draw intersecting arcs with Pd as radius from centre.

• Draw rivet head circles and shank as hidden circles.
• Draw the edges of the plates as shown
• Show proportions of plate thickness. (Fig 7)

Fig 7

Exercise 8.32
Single riveted (Single strap) butt joint (Fig 8)
Draw a single riveted butt joint with single cover plate. Two plates of 36 mm thick butting each other are to be
joined by riveting.
Calculations:
Given plate thickness t = 36 mm

Dia of rivet = = 36 mm
Pitch of rivets P = 3d = 108 mm
Lap l = 1.5d = 54 mm
for butt joints

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CITS :Engineering Drawing (Mechanical) - Exercise 8