Assignment - design of reinforced concrete structures

Question

Assignment - Design of Reinforced Concrete Structures

Part A -

1. Define Slenderness ratio.

2. Differentiate long column and short column.

3. Explain Minimum eccentricity.

4. Explain the Functions of foundation.

5. When do you go for combined footing?

6. Give the general steps involved in design of combined footing?

7. Sketch one way shear and two way shear in footing.

Part B -

1. Design the required reinforcements in a column of 400 mm x 400 mm size subjected to a characteristic axial load of 900 kN. The column has an unsupported length of 3m using LSM. Use M20 and Fe415.

2. Design a rectangular footing of uniform thickness for a RCC column bearing a factored load of 1350 kN and having a base size of 400mm x 600mm. SBC of the soil may be taken as 150 kN/m². Use M20 and Fe415.

3. Design a combined rectangular footing for two columns A and B, carrying loads of 1200 kN and 1200 kN respectively. Column A is 300 mm x 300mm in size and column B is 400 mm x 400 mm in size. The centre to centre spacing of the column is 3.m. The SBC of soil is 150 kN/m². Use M20 and Fe415.