Civil Engineering latest interview questions and Answers Part-I

Facing an interview with full confidence levels will do the work easy, even though not answering some of their questions. Revising or skimming through the basics and some concepts of the subject will add up to the confidence. The questions imposed in the interview will not be too complicated. The interviewers test the basic knowledge required to perform efficiently in the position what they are offering.

As we know that Civil Engineering is a vast branch of study and listing all the questions is an herculean task. In this 3 part Interview Question&Answer series, we tried to cover as much questions as possible. So, don’t just rely on these questions, study all the basic concepts. These are some questions asked in various interviews by L&T, TATA Projects, Aarvee, etc.,


Q) How do you calculate Bearing capacity of soil?
A) Firstly, it depends on the soil type and type of the project. Calculation of bearing capacity is done either by boring a hole to collect samples of soil or by plate load test.

Q) Explain Bleeding in Concrete
A) The separation of the cement slurry from the concrete mass is called bleeding. It occurs if water is added excess in concrete or poor mixing. In this scenario, the water tries to rise up to the surface of the concrete.

Q) What do you know about tender? Discuss different types of tenders.
A) Tender usually refers to the process whereby governments and financial institutions invite bids for large projects that must be submitted within a finite deadline. The term also refers to the process whereby shareholders submit their shares or securities to a takeover offer.
Types of tenders: (
  • Open Tendering : Under open tendering the employer advertises his proposed project, and permits as many contractors as are interested to apply for tender documents. Sometimes he calls for a deposit from applicants, the deposit being returned ‘on receipt of a bona fide tender’.
  • Selective Tendering: Under selective tendering the employer advertises his project and invites contractors to apply to be placed on a selected list of contractors who will be invited to bid for the project. Contractors applying are given a list of information they should supply about themselves in order to ‘pre-qualify’.
  • Negotiated tenders: These are obtained by the employer inviting a contractor of his choice to submit prices for a project. Usually this is for specialized work or when particular equipment is needed as an extension of existing works, or for further work following a previous contract.
Q) What are IS Code for mix design? (M20, M25 etc)
A) IS 456 : 2000
Download any IS Code here

Q) What are the IS Codes for Prestressed concrete, General construction in Steel, coarse and fine aggregates respectively?

Q) Abbreviate TMT, PPC.
A) TMT: Thermo Mechanically Treated. TMT bars are pre treated thermally and mechanically to bear more loads.
PPC: Portland Pozzolana Cement. To reduce the cement content, flyash is used in this type of cement. It also reduces the heat of hydration.

Q) How to find out the quantity of Steel in Fe415?
A) Dia of bar square/162= wt kg/m.

Q) What is the minimum value of camber provided for thin bituminous surface hill roads?
A) 2.5 Percent

Q) How do you calculate the quantity of concrete?
A) By finding out the volume of concreting area, one can calculate the quantity of concrete required.

Q) Why I-section is preferred to channel section?
A) Its because of MOMENT OF INERTIA. I section has got more moment of inertia than Channel.

Q) How to find the quantity of bricks required for given dimensions of wall?
A) By calculating the total volume of the wall and also the volume of each brick. Then dividing them.

Q) The foundation in which a cantilever beam is provided to join two footings, is known as?
A) Strip footing

Q) Why Shear reinforcement is provided?
A) Shear reinforcement, as name implies, is to provide the resistance against shear forces to which a beam is subjected to and is usully in the form of stirrups which also serve the purpose of holding the main tensile and compression reinf in place. Now the basic doubthere is, although, if the stirrups are provided to resis the shear force, why are these provided parallel to shear force and this way how will they resist shear force.
Thats for two main reasons -
1. shear force does'nt directly acts at stirrups but gets transmitted through tensile and compression reinf, thus
shear stirrups actually bear the shear force as like a tensile bar.
2. the profile of crack developed due to shear force shall not be absolutely vertical (in case of beam) as there are
other forces acting also and because of this the crack shall be always be inclined and if stirrups are there, the
crack profile shall pass through the stirrups and shall be resisted. By: Rohit agarwal

Q) What are the tests performed to check the quality of Portland cement?
A) Tensile strength, Setting time and soundness.

Q) Why PCC (Plain Cement Concrete) is required?
A) PCC is laid on the soil surface to protect the above reinforcement from direct contact with mud/soil. It also helps in levelling.

Q) What is the difference between shear and tension?
A) Shear is the resisting force of a member. Tension is the elongation property of a member when a force act on it.

Q) What is the period of removal of the form work? (Under normal conditions)
  • A) 7 days for beam soffits
    14 days for bottom slabs of spans 4.6 m and more
    21 days for bottom beams over 6 m spans
    2 days for vertical sides of columns
Q) What materials are added generally to improve workability of concrete?
A) Air-entraining admixtures, Oily or foaming agents.

Q) What is Expansion joint and where it is required?

A) Expansion joints are the gaps which are provided in a structure. Expansion joint is provided to avoid the failure of the structure due to thermal expansion.

Q) What are the minimum covers for different members of a structure like column, beam, footing and slab?
  • Footing: 50 mm
  • Column: 40 mm
  • Beam: 25 mm
  • Slab: 20 mm

Here is a question for you. What is the difference between Working Stress method and Limit state design method?
Work on this question and subscribe to CIVIL SCHOLAR. The answer for this question along with many other questions and Answers will be available soon on CIVIL SCHOLAR’s Civil Engineering INterVIEW Q&A Part II.

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