Which of the following is NOT correct for steel sections as per $$IS:$$ $$800-1984$$?

An unstiffened web $${\rm I}$$ 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

The symmetry of stress tensor at a point in the body under equilibrium is obtained from

The components of strain tensor at a point in the plane strain case can be obtained by measuring longitudinal strain in following directions.