Civil Engineering Basic Interview Questions and Answers
Q1. Name various authorities or workers on a construction site?
· Senior Engineer/Project manager
· Site Engineer
Q2.What is least cover provided for different RCC Members?
· Footing = 50 mm
· Column = 40mm
· Beam = 25mm
· Slab = 20mm
Q3. What are the functions of the column in a building?
A column is a vertical member in the building whose primary function is to support the structural load and transfer it through beams. Upper columns transfer the load to the lower columns and finally to the ground through footings.
Q4. What is the cement sand & aggregate ratios for various grades of concrete mix?
· M10 – 1:3:6
· M15 – 1:2:4
· M20 – 1:1.5:3
· M25 – 1:1:2
· M30 – 1:1:1
Q5. What do you mean by honeycomb in concrete?
Honeycomb, also known as air pocket, is nothing but the air voids in the concrete. It is usually formed during concrete casting.
Q6. Does Water damage concrete?
Plain concrete is not affected or damaged by water but Reinforced Concrete (RCC) can be damaged due to water. This is because the water may seep into the concrete and corrode the steel reinforcement inside.
Q7. What is the initial and final setting time of ideal cement mix?
Initial setting time for ideal cement mix is around 30 minutes for almost all kind of cement. For masonry cement, it can be 90minutes. The final setting time of ideal cement mix should be 10 hours at max. For masonry cement, it shouldn’t exceed 24hours.
Q8. What are common methods of curing the concrete?
· Wet covering of Surface
· Application of curing chemicals
· Steam curing
Q9. What is the formula for the weight of steel?
The weight of steel in kg can be calculated by the formula (D2*L)/162; where D is the diameter of steel bar in millimeter and L is the total length of steel bar in the meter.
Q10. What do you know about “TMT”?
TMT stands for “Thermo Mechanically Treated”. Generally, we use TMT bars and sheet for construction purposes for the reason that they have high strength and high corrosion resistance compared to normal steels.