Consider a reinforced concrete beam section of 300 mm width and 700 mm depth. The beam is reinforced with the tension steel of $2000 \mathrm{~mm}^2$ area at an effective cover of 50 mm . Concrete in the tension zone is assumed to be cracked. Assume the modular ratio of 12 and Young's modulus of 200 GPa for steel. When the extreme fibre in the compression zone undergoes the strain of 0.0004 due to the applied bending moment, the stress in the steel (in MPa ) is _________ (rounded off to the nearest integer).

Consider the built-up column made of two l-sections as shown in the figure, with each batten plate bolted to a component l-section of the column through 6 black bolts. Each connection of the batten plate with the component section is to be designed for a longitudinal shear of 70 kN and moment of $10 \mathrm{kN} . \mathrm{m}$. The minimum bolt value required (in kN ) is __________ (rounded off to the nearest integer).

Consider the beam $A C D E B$ given in the figure. Which of the following statements is/ are correct:

For the beam and loading shown in the figure, the second derivative of the deflection curve of the beam at the mid-point of $A C$ is given by $\frac{\alpha M_0}{8 E I}$. The value of $\alpha$ is _________ (rounded off to the nearest integer).