Question

The safe load that can be transmitted by the fillet welded joint shown in fig. The size of weld is 6 mm. (Assume permissible stress in weld is 100 MPa) is______.

• A. 120 kN
• B. 67.2 kN
• C. 50.4 kN
• D. 84 kN

Answer 1

The correct option is D 84 kN

Effective length of weld,
$L_w=60+40+60$
= 160 mm

Effective throat thickness,
$t_t=k\times s$
$=0.7\times 6=4.2mm$

Safe load,
P $=L_w\times t_t\times {\tau }_{vf}$
$=160\times 4.2\times 100$
= 67.2 kN