Determine the strength of a single riveted joint:

Determine the strength of a single riveted joint of 6 mm thick plates having 20 mm nominal dia rivets at a pitch of 6 cm. (f_y for plates is 150 MPa and rivets are hand-driven shop rivets.)

Solution

Consider one pitch length (60 mm) of joint.

Gross dia of rivet = 20 + 1.5 = 21.5 mm

Maximum permissible stresses in hand-driven shop rivet (Table 2)

Shear (τ_vf) = 80 MPa

Bearing on rivet (σ_pt) = 250 MPa

Bearing on connected Part = f_y= 150 MPa

Strength of rivets in

Single shear = π /4 × (21.5)² × 80 = 29044 N

Bearing = 6 × 21.5 × 250 = 32250 N

Tearing of plates = (60 - 21.5) × 6 × 150 = 34650 N

The strength of the joint per pitch length is the minimum of the above three, i.e. 29044 N or 29 kN (say).