Top 30 civil engineering questions

Top 30 civil engineering interview questions

In this article we discussed Top 30 important civil engineering practical knowledge questions 

After reading this article you will gain some basic knowledge of civil engineering 

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1. what is the peak of 1 Storey Building?

Ans 3.15 m

2. what is the quantity of 1 bag cement?

Ans 0.347 Cum or 1.25 Cubic feet.

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👉Doubly reinforcement beam section

👉Segregation

👉Bleeding in Concrete

👉Types of buildings

3. what is the load of 1 bag cement?

Ans 50 Kg

4. what's initial Setting time of Cement?

Ans 30 min

5. Final Setting time of Cement for Ordinary Portland cement is ?

Ans 10 hours

6. what is the minimum nos of bar for an oblong column?

Ans 4 Nos

7. what's minimum nos of bar for circular column?

Ans 6 Nos

8. what is the dimensions of Concrete cube?

Ans 150 x 150 x 150 mm

9 what proportion layer must fill a concrete cube for testing?

Ans 3 layers

10. what proportion layer must fill a slump for slump test?

Ans 4 Layers

11. what is the Validity of use of Cement?

Ans it's 3 months from Manufacturing

12.  Universal Testing Machine is used?

Ans Compression test for Concrete and for Tensile test of reinforcement.

13. the minimum curing period for concrete?

Ans In normal Weather, it's seven days.

For Dry or weather , it's 10 Days.

14. what's Deflection?

Ans Deflection means temporary displacement

15. what's deformation?

Ans Deformation could also be a permanent displacement.

16. what is the formula for lastingness of concrete?

Ans 0.7 route fck

17. Ordinary Concrete is known as?

Ans M10 to M20 concrete are ordinary concrete.

18. What types of grade of concrete are called Standard Concrete?

Ans M25 to M35

19.  High Strength Concrete are ?

Ans M60 to M80

20. what proportion time required to mix concrete during a mix machine?

Ans Minimum 2-3 min must mix concrete during a mix machine.

21. The bar of which diameter is used for chair?

Ans Minimum 12 mm diameter bar.

22. what is the Minimum protect Footing , Column, Slab and Beam?

Ans Minimum cover should be:

 Footing-50 mm,

 Column-40 mm,

Slab- 20 mm,

 Beam-25 mm

23. what is the ratio  cement concrete M10, M15, M20, M25?

Ans For M10-(1:3:6), M15-(1:2:4), M20-1:1.5:3, M25-(1:1:2)

Cement: Sand: Aggregates.

24. what is the minimum thickness of slab?

Ans Minimum thickness of slab should be 125 mm

25. what proportion water absorption is allowed for brick?

Ans almost 20 %

26. what is the minimum Diameter for dowels bar?

Ans Minimum 12 mm dia. bar.

27. what is the minimum allowable PH value of water?

Ans it is not but 6.

28. lap length of bars for compression zone?

Ans 24 d

29. the lap length of bar for M20 Grade Concrete?

Ans For Column-45d, Beam-60d, Slabs -60d.

30. the lap length of bars for Tension zone?

Ans 50d to 60 d, d=dia of bar.