Question

An unstiffened web I-section is fabricated from a 10 mm thick plate by fillet welding as shown in the figure. If yield stress of steel is 250 MPa, the maximum shear load that section can take is _______.

• A. 750 kN
• B. 337.5 kN
• C. 300 kN
• D. 350 kN

Answer 1

The correct option is C 300 kN



Shear force is resisted by shaded portion.
$\text{Allowable shear stress,}{f}_s=0.4f_y$
$\therefore$ shear load capacity of a section is
$=300\times 10\times 0.4\times 250[\because f_y=250N/m{m}^2]$
$=3\times {10}^{5}N$
or 300 kN