GATE CE 2021: RCC #4

A rectangular column section of 250mm x 400mm is reinforced with five steel bars of grade Fe 500, each of 20mm diameters. Concrete mix is M30. Axial load on the column section with minimum eccentricity as per IS: 456-2000 using limit state method can be applied upto

An RC column 500 mm x 500 mm is reinforced with 4 bars of 25 mm diameter, placed at a cover of 50 mm to the centre of steel bars. The maximum and minimum stresses (in N/mm²) in concrete if the column is subjected to a load of 500 kN at an eccentricity of 50 mm about one of the axes is [Use M 15 concrete and m = 18]

The allowable load carrying capacity of circular column section 400 mm diameter reinforced with 3245 mm² steel with bars adequately tied with spirals based on working stress method, is ____kN.
[Use M 25 grade of concrete and Fe415 grade of steel, assume short column]

An isolated footing for a square column, 450 mm x 450 mm, is reinforced with 8-25 ∅bars, and carrying a working load of 2500 kN. The limiting bearing resistance at column base is ___ kN.
[Use M25 grade of concrete and Fe415 grade of steel]