Interview Questions Answers in Civil Engineering

Questions / { senthilkumar }

Questions Answers Category Views Company eMail

Answers / { senthilkumar }

what do u mean by shear?and tension?

Answer

tension created when 2 equal and opposite forces acts in the same axis on a body.
shear is created when 2 equal and opposite forces acts tangentially on a body.

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Question { YSB, 3985 }

Strength of brick?

Answer

1st class brick > 10 N/mm2
2nd class brick > 7 N/mm2
class 40 ie. heavy duty bricks > 40 N/mm2

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Question { Parsvnath, 2493 }

State the type of roads and compare the advantages and disadvantages?

Answer

most commonly 2 types of pavements are used,
1) rigid-pcc
2)flexible-bitumen

1) rigid pavements, ie. pcc, is costly. they require low maintenance, the construction speed is very slow.
2)flexible pavements, ie. bitumen, is low cost as compared to rigid pavements. they requires periodical maintenance, the construction speed is faster as compared to pcc road construction.

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Question { 4168 }

What is differences between torsion and buckling?

Answer

torsion is twisting of an object due to applied force.
where as buckling is bending failure occurs in long column.

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Question { 2624 }

What is the exact definition of national highway.
What is the difference between national highway n any other road?

Answer

NH is connecting inter state- it is administered by NHAI and the central govt.
Where as the SH is connecting intra state and administered by state highway authorities or the respective state govts.

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Question { NM Caramoan Builders, 4773 }

Why we test compressive strength after 28 days..?

Answer

after 28 days 99% of characteristics compressive strength will be achieved( rate of hydration is faster). after 28 days in a long course of time, say 1 year, the balance 1% strength will be achieved( rate of hydration is very slower). it is not desirable to keep the cube for 1 or 2 years and test , if the full strength is achieved. so we test after 28 days.

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Question { L&T, 5594 }

How much stirrups spacing required for.column reinforcement?

Answer

as per is 456-2000, the lateral ties may be given the spacing not more than,
1) least lateral dimension
2) 16*dia of the bar used
3) 300 mm
the least of th above may be given

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Question { Casa Grande, 6264 }

What is the result of cube in 7 days test ?

Answer

in 7 days 65% of the characteristics compressive strength will be achieved. the test will be important because, as per standards the form work will be removed after 7 days of curing.

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Question { Bohra Industries Limited, 4972 }

How to calculate water tank capacity in Ltr

Answer

In 1 m3 of volume we can accommodate 1000 kg ie.1000 liter of water. so that first find the volume of the container in m3 and multiply that with 1000, you can get the quantity of water
in liters.
ex. if the volume of the container is 3 m3, the water can be stored is = 3*1000=3000 liter.

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Question { 3639 }

sir, i used 43grade opc cement to my wall plastering,i have cured 20 days ,recently , white dots and white powder shades are appearing on walls, is it any defect by curing excess days? have any disadvantages by it ? please answer

Answer

the white appearance or layer on the concrete is called efflorescence. it is caused by saline water. you might used high ppm saline water for curing.

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Question { IIT, 4052 }

we do not provide reinforcement bar through the centre of a column.why?

Answer

basically column is a compression member. maximum compression load sustained by column and transferred to foundation through the axis of the column. steel is not good in compression. because of lateral loads and eccentric loads the tensile stress created only around the center but not up to the center. because of that only around center reinforcement is enough to take care of the tensile stress.

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Question { NCCL, 10369 }

how to calculate shuttering measurement of beam and slab

Answer

shuttering work of horizontal members are generally called as, centering. centering works are measured in m2. shuttering area = the area of slab (take clear spans for finding area) + total depth of the beam (no. 1 and 3 which are parallel to each other) * the clear span of the slab which is parallel to the no. 1 and 3 beams + width of the beams * total center to center length of the beams + (total depth of the beam + total depth of the slab) * total length of all the beams.

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Question { NCCL, 10369 }

how to calculate shuttering measurement of beam and slab

Answer

sorry, sum also the, total depth of the beam (no. 2 and 4 which are parallel to each other) * the clear span of the slab which is parallel to the no. 2 and 4 beams with the above formula.

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Question { NCCL, 10369 }

how to calculate shuttering measurement of beam and slab

Answer

you also may add 5% for wastage.

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Question { Appco, 3183 }

how the find the quantity of water used to make 1 cubic meter concrete mortor

Answer

first we should know the ratio of the cement mortar, then find the quantity of cement. you should select a w/c ratio. using the water cement ratio and cement content (in kg) per cubic meter of mortar you can find the water content. NOTE: 1 kg of water is 1 liter of water.

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