Top 20 #Interview Walk-In Q & A for #Civil Engineers by #CivilEngineerMukeshSah

Top 20 Interview Walk-In Q & A for Civil Engineers

Q1. What is the Minimum Length of Hook?

Answer: 75 mm

Q2. What are the factors on which Development Length Depends?

Answer:  Grade of Concrete, Grade of Steel

Q3. What is the purpose of Frog in Brick?

Answer: It helps in developing a proper joint between Brick and mortar.

Q4. Which steel is used in the manufacture of rails?

Answer: Manganese Steel

Q5. What type of cement is preferable in seawater construction?

Answer: Slag or Pozzolana (PSC or PPC) as per IS 456 : 2000 Cl. 8.2.8

Q6. What should be the pH of water used in concrete?

Answer: As per IS 456: 2000 Cl. 5.4.2, pH of water shall be not less than 6

Q7. How to convert N/mm2 to Kg/cm2?

Answer: Multiplying by 10.197

Q8. What is the minimum lap length taken in the Compression zone?

Answer: As per IS 456: 2000 Cl. 26.2.5.1(d), the lap length in compression shall not be less than 24ᶲ, where ᶲ is the diameter of the bar.

Q9. When bars of two different diameters are to be lapped, then lap length will be calculated on the basis of which dia?

Q11. What is the function of Column in the building?

Answer: Column is a vertical member of a building that support structural load transferred by the whole structure through Beams. After that column transfers the load to the Footing and finally Footing transfers the load to the land.

Q12. When the possibility of Segregation of concrete is more?

Answer: a) When the water-cement ratio is high, b) If the ratio of coarser aggregate is much more than the other proportion, c) Coarser grading

Q13. What is the least cover provided for different RCC members?

Answer: Footing – 50 mm, Column – 40 mm, Beam – 25 mm, Slab – 20 mm.

Q14. What is the full form of TMT bar?

Answer: Thermo Mechanical Treatment.

Q15. What do you mean by Honeycomb in Concrete?

Answer: Honeycomb means Void. It is also known as Air Pocket.

Q16. What are Deflection and Deformation?

Answer: Deflection is temporary displacement whereas Deformation is permanent displacement.

Q17. What are the methods of curing?

Answer: a) Spraying, b) Wet covering of a surface, c) Ponding, d) Application of curing compound, e) Steam curing.

Q18. The formula for calculating the unit weight of the round section TMT bar?

Answer: (D)square/162, where ‘D’ is the dia of a bar in mm.

Q19. What is the unit weight of concrete?

Answer: As per IS 456:2000, the Unit weight of PCC is 2400 Kg/Cum & Unit weight of RCC is 2500 Kg/Cum

Q20. What is the Nominal Concrete mix proportion for different grades?

Answer: M5 – 1:5:10, M7.5 – 1:4:8, M10 – 1:3:6, M15 – 1:2:4, M20 – 1:1.5:3, M25 – 1:1:2