GATE 2023 RCC & Prestressed Concrete Evaluation Quiz 10

For a beam given below. If shear force is 70 kN then for M20 grade

of concrete and Fe 415 Grade of steel (F.O.S = 1.5)

The spacing of spirals are per IS 456 should be (Dc = diameter of core) (ϕh = diameter of spiral)

The loads carried by the longitudinal steel and concrete be in the ratio of 0.1. Assume modular ratio = 10. Find the percentage of longitudinal steel reinforcement.

Limit state method as compared to working stress method takes correct to -

In a combined footing for two columns carrying unequal loads, the maximum hogging moment occurs at,

A concrete column carries an axial load of 450 kN and a bending moment of 60 kN-m at its base. An isolated footing of size 2m × 3m with the 3 m side along the plane of the bending moment is provide under the column. Centres of gravity of the column and the footing coincide. The net maximum and minimum pressure, in kPa, in the soil under the footing are, respectively.

A doubly reinforced rectangular beam is 240 mm wide and 500 mm deep. If the limiting stress in concrete and steel are 5 N/mm² and 230 N/mm² respectively. The applied bending moment is 100 kN-m. effective cover to steel is 40 mm. m = 19. Then area for compression will be?

A simply supported prestressed concrete beam as of 25m span the initial stress of 1000 MPa. The slip in the jack during tensioning has a beam of 4mm. If E_S = 200 GPa. The loss of prestress due to anchorage slip is? (in%)