Top Best Most Important Basic Civil Engineering Interview Questions with Answers On Building Construction

1) What is the standard thickness of Putty?

Ans: 3 mm.

2) What is the Standard thickness of mortar for bedding of Flooring?

Ans: 35 mm.

3) What is the standard thickness of External Plaster?

Ans: 19 mm.

4) What is the standard thickness of Internal Plaster?

Ans: 12 mm.

5) In plastering, What is the name of 1st coat?

Ans: Undercoat.

6) Which IS code Illustrates about the Earthquake force?

Ans: IS 1893.

7) What is the use of Cover block?

Ans: It protects the reinforcement from thermal expansion during fire or excessive heat. It also protects the steel from corrosion.

8) What is the ultimate load carrying capacity of a pile?

Ans: The maximum load which a pile can carry before failure.

9) What is the minimum height of Parapet wall?

Ans: 1 meter.

10) How we can measure the thickness of Plaster?

Ans: Bull mark is provided at specific distance to make sure that the required thickness of Plaster is uniform throughout.

11) In plastering, What is the name of 2nd coat?

Ans: Floating coat.

12) What is the specific gravity range of Bentonite slurry during Piling?

Ans: 1.05 to 1.12.

13) What is the use of Damp Proof Course?

Ans: It prevents the moisture rising up the wall from the ground.

14) What is small and large diameter pile?

Ans: As per IS 2911, Part – 1, Section – 2, Piles of 600 mm or less in diameter are called small diameter pile and Piles greater than 600 mm in diameter are called large diameter pile.

15) What is Friction Pile?

Ans: If the pile supports the load primarily by friction along its surface, then it is called Friction Pile.

16) What is the standard thickness of Ceiling Plaster?

Ans: 6 mm.

17) What is the length of rise and tread in staircase?

Ans: Rise:- 150 mm to 200 mm ; Tread:-  250 mm to 300 mm.

18) What is the slope of staircase?

Ans: As per IS 456:2000, the slope or pitch of stair should be between 25 degrees to 40 degrees.

19) Why foundations are placed below ground level?


Ans: To increase the stability of structure.

20) What is the use of 3-4-5 method in construction sites?

Ans: 
This method used for setting out plan accurately at right angles.