RIVETED JOINTS
Diameter of shank of Rivet (d) = 6 t
where t = thickness of plate being connected in mm
The diameter (d) obtained is rounded to the nearest
standard size of rivets.
The standard sizes in mm as per BIS are: 12, 14, 16,
18, 20, 22, 24, 27, 30, 33, 36, 42, 48
Pitch (p) = 3d where pitch is the distance between
axes of adjoining rivets in same row measured
parallel to edges of plates.
RIVETED JOINTS
Row Pitch (pr) is the distance between two rows.
Row pitch is (2d) mm in zigzag type and (2d+6) mm
in chain type.
Diagonal pitch (pd) is the distance between axis of
nearest rivets in the adjoining rows. Its value is
7d/3.
Thickness of cover plates for Butt Joints:
Thickness of cover plate when only one cover plate
is used, tc1 = 1.125t
Thickness of each cover plate when two cover plates
are used, tc2 = 0.8t
Q1. Draw sectional front view and top view of a single-riveted lap joint for 10 mm thick plates.
Q2. Draw sectional front view and top view of a double-riveted lap joint (i) the chain, and (ii) the zigzag formation for 10 mm thick plates.
Q3. Draw sectional front view and top view of a single-riveted single cover plate type and double cover plate type butt joints for connecting 10 mm thick plates.
Q4. Draw top view and sectional front view of a single-riveted double cover butt joint. Take diameter of the rivet = 24 mm.
Q5. Draw sectional front view and top view of a double-riveted double strap butt joint (chain type). Take thickness of main plates = 8mm, cover plates = 5 mm, diameter of rivet = 12 mm, and pitch = 36 mm.
Q6. Sketch various types of welding joints along with their symbol.
ASSIGNMENT 4
Top Related