List of top Building Construction and Structural systems Questions on Design of structural elements with different materials

The section of a R.C.C. staircase flight is shown in the figure below. Each riser and tread of the staircase is 150 mm and 300 mm, respectively. The steps are supported by a 75 mm thick waist slab.

The width of the staircase is 1500 mm. The flight consists of 10 steps. Consider reinforcement to be 0.75% by volume of the total R.C.C. The density of steel is 7800 kg/m\(^3\). The amount of reinforcement required to construct the staircase flight (in kg) is (rounded off to two decimal places).

A simply supported RCC beam of span 4 m is supporting a brick wall over its entire span. The brick wall is 250 mm thick and 2 m high. The RCC beam has a depth of 600 mm and width of 250 mm. The density of brick masonry and RCC can be assumed as \(18 \, \text{kN/m}^3\) and \(25 \, \text{kN/m}^3\) respectively. Considering the load of the wall and self-weight of the RCC beam, the maximum bending moment in the beam (in kN-m) will be ......... [rounded off to two decimal places]. \begin{center} \includegraphics[width=0.5\textwidth]{08.jpeg} \end{center}