12 Civil Engineering Interview Questions with Answers. 2020 Updated

We've prepared a list of 12 frequently asked civil engineering interview questions along with their answers that will help you to crack the civil engineering interview questions in one go.

Before sitting for an interview to avoid stress, you should be well prepared. You need to be able to give well researched and thoughtful answers while being asked about the civil engineering interview questions. To limit your efforts and time, we are here to help you get prepared for your civil engineering interview questions.



Civil engineering is an engineering field that handles the design, construction, and maintenance of the physical and naturally developed environment. The questions asked in civil engineering interviews can be tricky sometimes so, you need to be well prepared. So, in this article, we’ve prepared a list of 12 frequently asked civil engineering interview questions along with their answers that will help you to crack the civil engineering interview questions in one go.


The top time and again asked 12 civil engineering interview questions with answers.

1. Explain the concreting process.

The concreting process is divided into four parts which are namely:

  • Batching – Batching refers to the measurement of different materials required in the production of concrete. The measurement is usually done in two ways, i.e., Volume Batching and Weight Batching. In volume batching, the materials are weighed according to the volume. On the other hand, in weight batching, the materials are measured according to their weight.
  • Mixing – Mixing refers to making a mixture of the products to produce concrete. The process is first done in the dry form and then the wet form. The two methods of mixing are hand mixing and machine mixing.
  • Transportation and Placement – After the concrete mix has been created, now it is the time for transporting this mixture. The mixed concrete is delivered to its final location and consumed at the desired place as soon as possible.
  • Compacting the concrete – The last step in the concreting process is compacting the concrete. In this step, the removal of air bubbles from the concrete mixture takes place. The bubbles can be removed either using hands or vibrators.


2. Which softwares are used in civil engineering?

The most popular softwares used in civil engineering are Autocad and 3D Max. These softwares help make various presentations and reports. Auto Desk 2D and 3D designs can be made with the help of using these two softwares. Architectural drawings and sketches can also be made through these softwares. Employers very frequently ask this question in civil engineering interview questions.


3. What are the different types of building contracts?

  • Fixed Price Contracts – Under this contract, the buyer and contractor make a deal involving a set amount that cannot be changed in the future. Although allowances are provided to the contractor. 
  • Time and material contracts – The time plays a crucial role in determining the cost of the contract. The value of these contracts is not fixed as it keeps on changing throughout the completion of the contract.
  • Cost-plus contracts – Under this type, the cost involved in the project is paid to the contractor. Also, an additional percentage is decided for the overall construction project.

You must be informed about the type of contracts while appearing for the civil engineering interview questions.


4. What do you understand by a projection line?

Projection lines give an exact visual image of the objects, which can be expressed in mathematical terms. This projection line can be used to measure the area under or area covered and many other aspects that are useful for civil engineers during the designing of projects.


5. What are the reinforcements used in the process of prestressing?

You should be aware of the term ‘prestressing‘ if asked by the employer in the civil engineering interview questions. The primary type of reinforcements used in the process of prestressing are:

  • Spalling Reinforcement – The spalling reinforcement leads to stress behind the loaded area of the anchor blocks. This leads to the breaking off of the concrete surface.
  • Equilibrium Reinforcement – Under this type of reinforcement, the prestressing loads are applied in sequence. Equilibrium reinforcement is required where there are various anchorages present.
  • Bursting Reinforcements – Bursting Reinforcements takes place where the stress path is concave towards the line of action of load. To reduce such stress, reinforcement in the form of bursting is required.


6. Explain the various type of slump test indicators.

Slump tests are conducted to check the working ability of fresh concrete produced. The consistency and stability of concrete are measured under this test. Different types of slumps that take place at the time of slump tests are:

  • True Slump – This type of slump is the most desirable. Under this type, the concrete mass is evenly spread without disintegration.
  • Shear slump – This type of slump lacks unity and hence is undesirable for the durability of the concrete.
  • Collapse slump – This type of slump is too wet. The mixture is said to be sharp and sway in nature. Hence, it is undesirable.

Being a civil engineer, you should be well acquainted with the types of slumps so that you can confidently answer the civil engineering interview questions asked by the employers.


7. What is the purpose of placing separation membranes between concrete pavement slab and sub-base?

  • The separation membrane placed between the concrete pavement slab and sub-base reduces the friction. The membrane supports the movement of the concrete slab.
  • It also helps in separating the sub-base material from freshly produced concrete.
  • The membrane also helps in the reduction of water and cement loss. This increases the durability of the cement.


8. Why should ponding and polythene sheets not be used for the process of curing?

The primary purpose of curing is to limit the heat loss of concrete that is freshly produced. Ponding is not preferred because this method of curing is majorly affected by cold winds.

In ponding, a large amount of water is used and needs to be disposed off from the construction site. Polythene sheets are used because they create an airtight environment that stops the evaporation of water from the construction site. But the use of polythene can also act as a disadvantage because it can be easily carried away by the winds.

Being a civil engineer, you should know the reaction of all the actions you do and must be able to answer the civil engineering interview questions.


9. Why are steel plates used inside bearings in elastomeric bearings?

To make the elastomeric bearings work, it should be allowed to bulge laterally. The stiffness compression can be increased by increasing the limiting amount. Once still plates are included in the bearing, the relaxation of the bulge is limited. 


10. Describe the methods of concrete curing?

Curing is the process in which the moisture and temperature are maintained for the freshly produced concrete. The method of curing is done for a short time to let the concrete get hard.

The methods involved in concrete curing are:
  • Water spraying
  • A wet covering of the surface
  • Ponding
  • Steam curing
  • Curing compounds

The process of concrete curing is known to every civil engineer, so prepare this question thoroughly for answering the civil engineering interview questions asked by the interviewers.


11. Why and how are alloys made?

It is believed that alloys produce better quality materials. Alloys are made using the hot-press method. In this, a hot metal base is rolled in a metal powder drum. Later, the hot spraying function is performed. Depending on the requirements, different alloys are added to the molten base metal.


12. What are the different types of roofs?

  • Flat roof
  • Earth roof
  • Mono-pitch roof
  • Double pitched (Gable) roof
  • Hip roof
  • Conical roof



These were some of the civil engineering interview questions that have been asked time and again in the interviews. You can also revise some of the important civil engineering formulas that you have studied earlier. Now, you are all set to crack the interview that leads you to your dream job. Good luck!

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