Question

Two plates of 8 mm thickness each are connected by a fillet weld of 6 mm thickness as shown in figure below.

The permissible stresses in the plate and the weld are 160 MPa and 120 MPa, respectively. Assuming the length of the weld as shown in the figure to be the effective length, the permissible tensile load P is________kN.

• A. 98
• B. 64
• C. 180
• D. 126

Answer 1

The correct option is B 64

$p_w=f_w\times l_{eff}\times t_t$
$=120(100+100+50)\times 0.7\times 6\times {10}^{-3}kN$
$=126kN$
$P_{Plate}={\sigma }_{at}\times A_{net}=160\times 50\times 8\times {10}^{-3}=64kN$
So, permissible tensile load = 64 kN