15 important interviews questions and answers
Q 1. What is grouting?
Grout is a fluid form of concrete which is used to fill the voids.
Q 2. What is allowable moisture content in Fine aggregate for the concrete mix?
We won’t use the aggregate if its moisture content is more than 5%.
Q 3. What do you mean by segregation?
Segregation is a separation of cement, sand from aggregate. This is caused due to Water cement ratio and when concrete is poured about more than 1.5m
Q 4. What is Seepage?
Slow percolation of water through soil is called Seepage.
Q 5. What is the Compressive Strength of brick?
First class brick-105kg/cm2
Second class brick-70kg/cm2
Fire brick-125kg/cm2
Q 6. How do you check the quality of cement on the site?
1. Date of Mfg. : Cement strength decreases with its age.
2. Color: Color should be grey with light greenish shade and it should be uniform. Color gives an indication of excess lime or clay.
3. Float test: A good cement won’t float if you throw a cement in water.
4. When you put your hand in cement bag you should feel cool.
Q 7. 1BHK full form ?
1 Bedroom, 1 Hall, 1kitchen
Q 8. What are the Different types of Slabs?
There are 16+ different types of slabs
Q 9. What is Initial & final setting time of concrete?
Iintel Setting time : 30mins,
Final setting time : 10hrs
Q 10. What is durability?
Ability to withstand under pressure is called Durability.
Q 11. What are the concrete tests?
Slump test, Compressive strength test, water permeability test, Water absorption test
Q 12. What is bleeding in concrete?
Bleeding is one form of segregation, where water comes out to the surface of the concrete, being lowest specific gravity among all the ingredients of concrete.
Q 13. What is the name of the machine to get compression test?
Universal testing machine (UTM)
Q 14. When we go for Pile foundation?
Pile foundation is adopted when the Soil bearing capacity is less than 24KN/m^3
Q 15. What is the function of stirrups in the column?
Stirrups are provided to handle the shear force and to hold the rebars (main bars) in position.