L & T Interview Questions For Civil Engineers



Q1. What are the functions of a column in a building?

Q2. What are the uses of Groynes?

Q3. What are the strongest shapes in the building?

Q4. How many feet are in 4 square yards?

Q5. What is the average density of soil?

Q6. What is the ratio of Grades M5, M7.5, M10, M15, M20, M25, M30, M35, M40?

Q7. How do you compute the volume of airflow?

Q8. Who designed the city of Washington DC?

Q9. How do you maintain water pressure?

Q10. The mixture of different ingredients of cement is burnt at

Q11. The foundations are placed below ground level, to increase

Q12. The portion of a brick cut across the width is called

Q13. The concrete slump recommended for beams and slabs; is

Q14. In jack arch floor, the rise is kept

Q15. What is absolute pressure?

Q16. What is the meaning of soil reinforcement?

Q17. Minimum size of the particles of silt soil, is

Q18. Under reamed piles are generally

Q19. Describe briefly the various methods of concrete curing.

Q20. Sometimes the side of concrete bridges is observed to turn black in color. What is the reason for this phenomenon?

Q21. What reinforcements are used in the process of prestressing?

Q22. What are the functions of grout inside tendon ducts?

Q23. What is the different type of slump test indications?

Q24. Is it worthwhile to carry out tests on particle density of soil particles for geotechnical design?

Q25. What are the main reasons for conducting pull-out tests for soil nails?

Top 20 interview questions for civil engineers

1. What are the causes of building collapse? 
Ans. The Passage of time is one reason. Buildings also collapse due to weak foundations. Earthquakes, hurricanes and other natural disasters can also damage the structure of the buildings and cause it to collapse. Bombings or demolition of buildings is also other reasons.
2. What are the applications of modulus of elasticity?
Ans. As the term implies, "Modulus of Elasticity” relates to the elasticity or "flexibility" of a material. The value of modulus of elasticity is very much significant relating to deflection of certain materials used in the construction industry. Take for example the general E value of mild carbon steel is about 200 GPA compared to about 70 GPA for aluminium. This simply translate that aluminium is 3 times flexible than steel.
3. How do you measure concrete?
Ans. Cubic feet, Cubic yards, Cubic Meter

4. Which is stronger solid steel rod or hollow steel pipe?
Ans. On a per pound basis, steel pipe is stronger in bending and is less likely to buckle in axial compression.
5. What is aggregate?
Ans. Aggregate is the component of a composite material used to resist compressive stress.
6. How do you calculate the power of a centrifugal pump?
Ans. The input power, that is, the power required to operate the pump should be stated in Hp (horsepower) on the pump's nameplate. It can also be calculated by the 3-phase power equation:
P(in Hp) = VI(1.7 c) = Rated Voltage x Rated Current x 1.73/ %Efficiency

If this is a consumer grade pump that operates on 120 Vac, then the equation becomes P = VI, simply multiply the operating voltage, 120 x current (which is the number followed by the letter "A".The output power, which really is not technically power, but rated in Gpm (gallons per minute), or capacity should also be on the nameplate. If you have the make, model, and (not necessarily needed) the serial number (also on the nameplate) you could call the manufacturer's customer service dept. As an application engineer, I have contacted countless manufacturers’, and service dept's for assistance. It is now big deal to them, they will be happy to answer your questions.
7. What is rigging?
Ans. In sailing, the ropes used to move the sails around so the boat will move in the right direction when the wind blows.
8. What is absolute pressure?
Ans. Absolute pressure is simply the addition of the observed gage pressure plus the value of the local atmospheric pressure.
9. How do we calculate absolute pressure?
Ans. Absolute is equal to gauge pressure plus atmospheric.
10. What is Gravity flow?
Ans. Gravity flow is fluid flowing due to the forces of gravity alone and not to an applied pressure head. In the Bernoulli equation, the pressure term is omitted, and the height and velocity terms are the only ones included.
11. What do you mean by honeycomb in concrete?
Ans. Some people call it an air pocket in the concrete or a void. It is the exposed course aggregates on surface of concrete without covered by mortar or surrounding the aggregate particles.
12. What is the purpose of the gap in the road on this bridge?
Ans. Purpose of the gap in the road is to allow the road to expand and contract with temperature changes without causing damage or deformation to the road.
13. What is a projection line?
Ans. Projection line is the way, in which the earth is shown on a flat piece of Paper.
14. What are moment of inertia and its importance in civil engineering?
Ans. The moment of inertia measures the opposition any kind of body will have against a certain momentum (along that same axis) trying to rotate that body.
15. What is the absolute pressure scale?
Ans. Absolute pressure is calculated from a vacuum (0 PSI) and atmospheric pressure is 14.7 PSIa or 14.7 PSI above a vacuum 1 PSI on a tire pressure gauge is called 1 PSIg = 15.7 PSIa 10 PSIg=24.7 PSIa 100 PSIg=114.7 PSIa etc.
16. What is diversion tunnel in a dam?
Ans. When a dam is to be built, a diversion tunnel is usually bored through solid rock next to the dam site to by pass the dam construction site. The dam is built while the river flows through the diversion tunnel.
17. How do you maintain water pressure?
Ans. If you have water pressure and wish to maintain it, do not cause flow in the line, which will reduce pressure due to friction. To keep pressure up, reduce friction by increasing the line size or eliminating some other restriction.
18. What are some structures that may be subjected to fatigue?
Ans. Bridges, hydraulic presses, burners trains
19. Why does the pressure increase under soil?
Ans. Soil pressure increases with depth due to the overburden or self-weight of the soil and due to loads imposed upon the soil.
For example, the pressure variation below the depth of soil is linear and the relation is given by pressure = unit wt * depth. As depth increases, there will be a linear increase in the soil pressure.
20. What is the distance between railway tracks?
Ans. 4 feet, 8 1/2 inches.

NBCC Recruitment 2017 – Civil & Electrical Engineer



NBCC (India) Limited, formerly known as National Buildings Construction Corporation Ltd., is a blue-chip Government of India Navratna Enterprise under the Ministry of Urban Development. Listed with both the Stock Exchanges, the companys unique business model has today, made it stand out as a leader in its own right in the construction sector with more than INR 36000 Crore Order Book in hand till March 2016 and counting. The Company has registered a substantial 32% Growth in Top line during FY 2015-16 as compared to previous year. It has posted a profit of Rs.311 crore white its total Income has surged to Rs.5838 Crore during FY 2015-16.
Certified with ISO 9001:2008 from the Bureau of Indian Standards in respect of Project Management & Consultancy, the Companys present areas of operations are categorized into three main segments, i.e. 
NBCC has been executing many Landmark Projects as a PMC which contributes to about 85% of its annual revenue. The segment being the Companys core strength, the areas covered under its umbrella include Roads, Hospitals & Medical Colleges, Institutions, Offices, Airports, Bridges, Industrial & Environmental Structures etc.
The Real Estate segment of the Company which came into being in 1988, mainly executing Commercial Real Estate Projects, today has undergone a sea change operation wise. Keeping pace with the changing business scenario, NBCC, in order to enhance its margin viz-a-viz its faster growth, has restrategized its operation by putting added thrust in Real Estate and giving it a whole new dimension. The present Real Estate Business of the Company could be distinctively viewed falling in two categories based on Source of Origin of the Projects i.e. one is Internally Originated & Conceptualised projects wherein the Company buys land from private and government agencies alike, develops the land and sells it off; while others are Sourced from Government wherein, NBCC carries out re-development of Government properties on a model i.e. self sustaining and does not call for any Government Funding. The New Motibagh- Green Complex (Delhi) under General Pool Residential Accommodation (GPRA) Scheme is one of the finest examples of such a re-development work in recent times. The project today is certified largest Green Home Complex of its kind in the country.
NBCCs success in implementation of the Govts New Moti Bagh Re-development Project, has earned it a huge dividend in the form of Govts awarding huge number of redevelopment projects to the Company.
Apart from Redevelopment, the other category of the Real Estate also holds a great promise for the future of the Company as it has about 30 Residential & Commercial Real Estate Projects presently going on at various locations of the country and more are coming up with huge investments.
In the initiatives towards transparency and corporate governance, NBCC has, under the umbrella of Digital India, introduced Vendor Grievance and Online Annual Property Return Portals to effectively address the issues of these respective areas. The process of implementation of document management system for online tracking of official files are also under progress which on final implementation will reduce the paper consumption enhancing green footprints of NBCC.
The Company shall soon launch a new business venture of e-Commerce which shall cater to the sale of built-up properties of NBCCs Real Estate, as also Government deptts., Financial Institutions and Private Developers.
NBCC has been operating in Infrastructure Segment as well called EPC, wherein it has been executing projects such as Chimneys, Cooling Towers, and various types of Power Plant Works.
NBCC has earned a niche for itself in construction of Green Buildings. Office of The Indian Institute of Corporate Affairs at Manesar (Haryana) constructed by the Company as its first one, has received the prestigious Gold Rating under LEED India for new construction, awarded by Indian Green Building Council (IGBC) in the year 2012. Other Green Building projects by the Company that followed thereafter include CSOI, New Delhi; Aayakar Bhawan, Noida (UP); SIB, Kolkata; Coal India Building, Kolkata, CBI HQ Building, New Delhi; 5-Star Rated National Institute for Solar Energy, Gurgaon (Haryana) etc.
NBCC is also designated as the implementing agency for executing projects under Jawaharlal Nehru National Urban Renewal Mission (JNNURM) now named as Atal Mission for Rejuvenation and Urban Transformation (AMRUT), Pradhan Mantri Gram Sadak Yojna (PMGSY), Solid Waste Management (SWM) and developmental work in North Eastern Region. Due to vast experience and quality of services rendered by NBCC, a number of Central Government Ministries and various State Governments are utilizing the services of NBCC as their extended engineering arm.
The Company has been notified as a Public Works Organization (PWO) explicitly, a construction agency covered under revised Rule 126 (2) of GFRs, as per which Government Department(s)/ PSUs and Autonomous Bodies can award the works to NBCC on nomination basis.
In order to effectively address the issue of Sustainable Development, NBCC has set up a Joint Research and Development Centre for "Sustainable Civil Infrastructure" in association with IIT Roorkee. The Centre would work towards technology upgradation and innovation in construction, required to add value to the initiative.
OVERSEAS OPERATION
NBCC ventured into Overseas Operations in the year 1977, executing projects of diverse nature in countries like Libya, Iraq, Yemen, Nepal, Maldives, Mauritius, Turkey, Botswana. Presently, the Company has its presence in Maldives, Turkey and Botswana implementing various projects and earning consistent revenue. Of late, NBCC has opened an office in Oman and also signed an MoU with Al Naba Services LLC in Oman in order to jointly explore and secure infrastructure projects in Sultanate of Oman & neighbouring countries. To further its prospects overseas, the Company has also entered into MoUs with Construction Industry Development Board Holdings, Malaysia and Form Yapi Malzemeleri Insaat Samayi Ticaret Ltd., Turkey.
Apply here for the latest civil and electrical engineering govt job. NBCC Recruitment 2017 notification is out for civil and electrical engineering graduates. Interested candidates can apply for this job. National Building Construction Corporation is a Indian govt limited construction company which is hiring for civil and electrical engineers in month of September.
NBCC RECRUITMENT 2017 FOR CIVIL ENGINEERS
No Of Vacancies-
Junior Engineers- 40 Posts
Senior Project Executive- 10 Posts
Project Manager- 05 Posts
Age Limit & Experience –
Junior Engineers- 28 years
Senior Project Executive- 30 years ( 02 Years Experience)
Project Manager- 37 years (06 Years of relevant experience)
Educational Qualifications Required- The candidates who are willing to apply for NBCC Recruitment 2017 should possess a full-time degree in civil engineering from a recognized University with 60% of marks.
NBCC RECRUITMENT 2017 FOR CIVIL ENGINEERS
No Of Vacancies-
Junior Engineers- 40 Posts
Senior Project Executive- 10 Posts
Project Manager- 05 Posts
Age Limit & Experience –
Junior Engineers- 28 years
Senior Project Executive- 30 years ( 02 Years Experience)
Project Manager- 37 years (06 Years of relevant experience)
Educational Qualifications Required- The candidates who are willing to apply for NBCC Recruitment 2017 should possess a full-time degree in civil engineering from a recognized University with 60% of marks.
 Last Day To Apply- The candidates who are applying for NBCC Recruitment 2017 can apply for it before 24/09/2017.
How To Apply- Students who fulfills the required eligibility criteria for NBCC Recruitment 2017 can apply online by visiting NBCC official site.