Question

A fillet - welded joint of 6 mm size is shown in the figure. The welded surfaces meet at 60-90 degree and permissible stress in the fillet weld is 108 MPa. The safe load that can be transmitted by the joint is ______.

• A. 113.4 kN
• B. 109.5 kN
• C. 151.6 kN
• D. 162.7 kN

Answer 1

The correct option is A 113.4 kN


Size of weld,
s = 6mm

weld surface meet at 60 - 90 degree.
So, thickness of throat,

t = 0.7s
= 0.7 x 6
= 4.2 mm

Length of weld
L= 100 + 50 + 100
= 250 mm

safe load = (Permissible stress of weld) x (Area resisting shear)
= 108 x t x L
= 108 x 4.2 x 250 N
= 113.4 kN