Civil Engineering Interview Questions and Answers
Q1. Name various government or people on a production website online?
Senior Engineer/Project supervisor
Q2. What are the capabilities of column in a constructing?
Ans: Column is a verticle member in constructing whose number one characteristic is to assist structural load and switch it via beams. Upper columns transfers the weight to the decrease columns and in the end to the ground thru footings.
Q3. What is the Unit Weight of concrete?
Ans: The unit weight of concrete depends on the sort of aggregates and amount of voids. As per IS : 456-200 Unit weight of PCC is 24KN/m3 and RCC is 25KN/m3
Q4. What is ductility?
Ans: Ductility is the Ability to deform underneath tensile strain.
Q5. What is the cement sand & aggregate ratios for diverse grades of concrete blend?
M10 – 1:three:6
M15 – 1:2:4
M20 – 1:1.Five:three
M25 – 1:1:2
M30 – 1:1:1
Q6. What do you suggest by honeycomb in concrete?
Ans: Honeycomb, additionally known as airpocket, is nothing but the air voids in concrete. It is usually fashioned throughout concrete casting.
Q7. What is flat slab?
Ans: The slab which is supported on columns. (Flab slab don’t have beams)
Q8. What do you imply by way of One storeyed, Two storeyed building?
Ans: The constructing which has flooring is referred to as two storeyed constructing.
Q9. What do you suggest via the moment of inertia?
Ans: A quantity expressing a frame’s tendency to resist angular acceleration, that's the sum of the products of the mass of each particle inside the body with the rectangular of its distance from the axis of rotation.
Q10. What are the sorts of a hunch?
True Slump: The concrete mass after the test while slumps evenly all round without disintegration is called the authentic stoop.
Shear Slump: When one-1/2 of the concrete mass slide down the other is called the shear stoop. This type of stoop is acquired in a lean concrete mix.
Collapse Slump: When the sample is collapsed due to adding excessive water, it's miles referred to as fall apart hunch.
Zero Slump: For very stiff or dry mixes it does not display any modifications of the stoop after removing the slump cone.
Q11. What is the initial and final placing time of best cement blend?
Ans: Initial setting time for perfect cement blend is round 30 minutes for almost all sort of cements. For masonry cement it is able to be 90minutes. Final putting time of perfect cement blend have to be 10 hours at max. For masonry cement it shouldn’t exceed 24hours.
Q12. What are commonplace strategies of curing the concrete?
Wet protecting of Surface
Application of curing chemical substances
Q13. What do you already know approximately “TMT”?
Ans: TMT stands for “Thermo Mechanically Treated”. Generally we use TMT bars and sheet for creation purposes for the motive that they have high energy and excessive corrosion resistance compared to regular steels.
Q14. What is difference among working pressure approach and restriction country technique?
Ans: Working pressure method is an elastic design method wherein structure is designed to undergo the burden upto elastic limit. Whereas, restriction country technique is a plastic design method in which shape is designed to undergo the burden past plastic restrict.
Q15. What discipline tests are required for exceptional check of cement?
Ans: Quality of cement may be checked with color, physical houses, and so on. Cement must have grey shade with light greenish colour. It should experience smooth whilst rubbed among fingers. If hand is inserted in a heap of cement or its luggage, it should sense cool. When pinch of cement is thrown in Water then cement have to go with the flow for some time earlier than it sink. Also, it need to be lump free.
Q16. What are the sorts of foundation utilized in production?
Ans: There are basically sorts of basis: Shallow & Deep basis. Again shallow basis can be classified as spread footing, blended footing, strap or cantilever footing and subsequently mat or raft footing. Deep foundations can be categorised as pile footing, pier footing, caissons footing and well foundation.
Q17. What are the sorts of cement?
Ans: There are various varieties of cement which might be: Ordinary Portland Cement (OPC), White Portland Cement (WPC), Portland Pozzolana Cement (PPC), Low Heat Portland Cement, Coloured Portland Cement, Hydrophobic cement, Rapid Hardening Cement, Portland Slag Cement, Sulphate resisting Portland Cement, and so on.
Q18. What is guniting?
Ans: It is a process in which aggregate of cement & sand in proportion of one:three is shooted on concrete floor with the help of cement gun underneath stress of two to 3 kg/cm2. It is a highly effective technique for repairing concrete partitions or damaged surfaces.
Q19. What is the characteristic of sand in mortar?
Ans: The most important function of sand (mixture) in mortar or plaster is to provide core energy, but it has other advantages too. If water is mixed with binder with out including sand to the aggregate, each compressive and tensile electricity of the combination might be significantly decrease than in mixture with delivered sand. It additionally facilitates to prevent mortar shrinkage, will increase density and enables in setting.
Q20. What are various exams for checking brick pleasant?
Ans: We can use water absorption check, hardness test, form & size, crushing strength check, soundness take a look at, and many others. To test the brick excellent. In water absorption test, we dip the brick for 16 hours in water. If weight of brick after dipping in water doesn’t exceed through 20%, it may be considered as first class brick, if under 22.Five% it could be considered as 2d class brick, if under 25% it may be considered as third magnificence brick. In crushing check, it crushing strength must be minimal of 10 N/mm2 for first magnificence brick, 7.5 N/mm2for 2nd class bricks. In hardness check, we scratch the brick with nails. It should be scratch loose. In soundness test we test the metal sound with the aid of hanging two bricks with each other.
Q21. What is void ratio?
Ans: Void ratio is the ratio of quantity of voids to quantity of solids.
Q22. What are the obligations and responsibilities of civil site engineer in road and constructing creation?
Ans: While in obligation of supervision of building, you need to ensure that the concrete blending is according to the grade exact. While supervision of avenue, you should ensure that the special layers of the road are laid in proper thickness.
Civil website online engineer. Is responsible for execution of all construction interest allowed to him & he have to take obligation in the direction of all scope of work beneath him. He ought to carryout work allowed to him.
There are kinds of website civil engineer , first task is a supervisory one if he works with the representative, in this example he desires to ensure that the report in hand is an appropriate designed.
Q23. What is duty of civil foreman?
Ans: A Civil foremen obligations/responsibilities is investigate on facets and control of every work on facet and hard work paintings, work pleasant additionally file of all paintings and each labor guy & control work on time,on side coincidence, machines,fabric,tools. And so forth are full duty a side foremen.
Q24. What is shuttering? How it's far completed on site?
Ans: Shuttering is Temporary Structure. This Structure used for Placing of Permanent Structure in keeping with Approved Drawing and Design. This shape commonly Wooden or Steel.
Q25. How to distinguish the volumes of moist and dry sand / soil?
Ans: It must discover by using Rapid moisture meter, technique moisture correction method.In Wet sand moisture come to be extra and it dry moisture end up much less then wet.In sand moisture should be allowing most effective 12 %. 25% of Volume might be range from the each.
Q26. Which is extra green – square beam or a circular beam? Give example?
Ans: According to cloth of beam if we use concrete then rectangular beam however on the usage of metallic beam tubular phase are higher than rectangular.
Q27. What is fineness of cement?
Ans: Fineness of cement is property of cement that suggest particle length of cement and precise floor area. And not directly impact heat of hydration. If fineness is more then warmth of hydration should be more.
To calculate fineness of cement sieving are performed sieve variety nine and size of sieve 90 micron sieve
Q28. Describe in short the numerous methods of concrete curing?
Ans: Curing is the manner of keeping the moisture and temperature situations for freshly deployed concrete. This is finished for small duration of time to permit the hardening of concrete. The strategies which can be worried in saving the shrinkage of the concrete consists of:
Spraying of water: on partitions, and columns may be cured through sprinkling water.
Wet protecting of floor: may be cured by the usage of the floor with wet gunny bags or straw.
Ponding: the horizontal surfaces which include the slab and floors can be cured with the aid of stagnating the water.
Steam curing: of pre-fabricated concrete units steam may be cured by using passing it over the devices which are underneath closed chambers. It allows quicker curing method and outcomes in faster healing.
Application of curing compounds: compounds having calcium chloride may be applied on curing surface. This continues the surface wet for a very long term.
Q29. Why are metal plates inserted interior bearings in elastomeric bearings?
Ans: In order to make a elastomeric bearing act/ feature as a smooth spring it need to be made to allow it to bulge laterally and additionally the stiffness compression may be multiplied by way of sincerely increasing the limiting amount of the lateral bulging. In many instances so one can increase the compression stiffness of the bearing the use of metallic plates is made. Once metallic plates are included in the bearings the liberty of the bulge is constrained dramatically, additionally the deflection of the bearing is reduced as compared to a bearing without the presence of metal plates. The tensile stresses of the bearings are brought on into the steel plates. But the presence of the metallic plates does no longer have an effect on the shear stiffness of the bearings.
Q30. What reinforcements are used inside the method of prestressing?
Ans: The essential sorts of reinforcements used in prestressing are:
Spalling Reinforcement: The spalling stresses results in strain in the back of the loaded region of the anchor blocks. This results within the breaking off of the floor concrete. The maximum likely reasons of such types of stresses are Poisson`s consequences strain interoperability or via the strain trajectory shapes.
Equilibrium reinforcements: This form of reinforcements are required where numerous anchorages exist wherein the prestressing loads are applied in a sequential manner.
Bursting Reinforcements: These forms of stresses arise in cases in which the stress trajectories are concave closer to the road of action of load. In order to reduce such stresses reinforcements inside the shape of bursting is required.