Top Best Most Important Basic Civil Engineering Interview Questions with Answers On Design of Steel and R.C.C Structures

1) What is Effective Depth?

Ans: The minimum effective depth of the beam may be assumed 1/10 of span.
         Add clear cover in effective depth to take Total depth of the beam.

2) What is Effective Breath?

Ans: minimum breath of beam should be between ½ to 2/3 of its total Depth.

3) What is Minimum Reinforcement?

Ans: Minimum area of tensile reinforcement should not less than that given by the following formula:
                        As=0.85bd/fy    
                Where,
                       As = Minimum area of tensile reinforcement
                       b = Breath
                       d = Effective depth
                       fy = Characteristic strength of reinforcement.

4) What is Maximum Reinforcement?

Ans: Maximum are of tensile reinforcement should not exceed 0.04 bd.

5) What are Functions of Distribution Bars?

Ans: Functions:
        1. It distribute the superimposed load equally to the main bars.
        2. It resists temperature stress produced in the slab due to
            temperature variations.
        3. It maintains the main bars in their proper position (spacing).
        4. Diameter of distribution bar should not less than 8mm.

6) How to convert N/mm2 to Kg/cm2?

Ans: Multiplying by 10.197.

7) What is the function of stirrups in the column?

Ans: Stirrups are provided to handle the shear force and to hold the rebar’s (main bars) in position.

8) What is the angle of Hook in Stirrups?

Ans: 135 degree.

9) What is the direction of Main & Distribution bar in R.C.C Slab?

Ans: Main bar in shorter span and Distribution bar in longer span.

10) What do you mean by normal tension?

Ans: The tension at which the measured distance is equal to the correct distance (i.e. when sag correction is neutralized by pull correction) is known as normal tension.

11) What is the full form of R.C.C?

Ans: Reinforced Cement Concrete.

12) What are the factors on which Development Length depends?

Ans:  Grade of Concrete, Grade of Steel.

13) Why we provide Alternate Bent Up bar in slab?

Ans: To resist Negative Bending Moment.

14) What is the maximum dia of bar we can use in a slab?

Ans: As per IS 456: 2000 Cl. 26.5.2.2, the dia of reinforcing bars shall not exceed 1/8 th of total thickness of slab.

15) What is the maximum spacing between 2 chairs or spacers bar in slab?

Ans: 1 meter.

16) As per IS code 456:2000, what is the minimum dia of main bar in column?

Ans: 12 mm.

17) What is the Reinforcement criterion for beam?

Ans: As per IS code 13920: 2016 Cl. 6.2.1, Beam shall have at least two numbers 12 mm dia bar each at the top and bottom faces.

18) In one way slab, Main bar is provided along which span?

Ans: Shorter span.

19) What is Working Load?

Ans: The load assigned to a pile as per design.

20) What is the Function of Stirrups?

Ans: Stirrups are provided to resist the Shear force. It also holds the main bars in position.