civil engineering interview question

1. the standard size of brick

ans:19x19x9(mm)

2.crusing strenght of first class bricks

ans:105 kg/cm2

3.water absorption for good brick should not be more than

ans:20%

4.compression strenght of common building bricks should not be less than

ans: 3.5 N/mm2

5.number of standard bricks in one cubic metre of brick masonary is

ans : 500

6.identification provided in the face of brick is

ans : frog

7.a layer of dry bricks put below the foundation concrete in case of soft soil is called

ans :dpc

8.hollow bricks are generaally provided for

ans : for providing insulation against heating

9.when brick is cut into 2 parts longitudinally it is called

ans: queen closer

10.red colour of brick is due to the

and: iron oxide

11.brickwork is measured in square metre in case of

ans :honey comb brickwork ,brick flat soiling , partition walls or half brick walls

12.brick wall are measured in square metre if the thickness of the wall is

ans:10 cm

13.what is the purpose of soaking of brick before its use

ans: to prevent absorption of moisture from motar when it is used with it

14.main purpose of providing frong in brick

ans:to form keyed joint between brick and motar

15.brick is manufactured by the process called

ans :tempering

16.what does 415 in fe415 means?

Ans:415 means the tensile strength of steel

17.what do 20 means in M20 grade

Ans:it means the compressive strength of concrete

18.what are the test performed on cement at site

Ans:1. Colour test

2.adulatration test

3.lump test

4.temperature test

5.check whether their is IS mark

6.date of manufacture

7.setting time test

19.mimimum and maximum setting time of cement

Ans:initial is 30 min and final is 10hours

20.maximum angle at which the stair should be inclined

Ans:40 degree acording to is code

21.different types of cement

Ans:1.portland cement

2.portland pozzolana cement

3.portland clag cement

4.low heat cement

5.rapid hardening cement

Comments

point and crossing railway

Point and crossing points and crossing are special arrangement on the track to facilitate smote diversion of train from One track to another. Important terms in points and crossing main track: track from which are trains to be diverted is called main track. Branch track : track to which a train is diverted is called branch track. Tongue rail: the tappered movable rail which is attached at or near one end to a running rail is called tongue rail. Stock rail: stock rail is a running rail to which our tongue rail is attached. Switch: which is a pair of tongue rail with necessary connection. Points: a pair of tongue rail and stock rail with necessary connection form points. Heel of switch: heel of switch is untampered end of switch rail which is fixed to the lead rail. Toe of switch : toe of switch is the thin tapering end of the tongue rail. Heel of divergence :heel of divergence is a distance between the running face of the stock rail and that of the tongue rail measured at the heel

different type of rail

1.bull headed rail : the rail section whose head dimension are more than that of foot are called bull headed rail. 2.flat footed rail: the rail section having their foot flat. 3.double headed rails: rail section whose head and foot are of the same size.

Working stress method

Assumption in theory of simple bending of RCC structure(working stress method) 1. A section which is plane before bending remains plane after bending. 2. The concrete and steel reinforcement are perfectly bonded . 3. All tensile stress are taken up by steel and non by concrete. 4.the stress strain relation of Steel and concrete under working load is a straight line. 5. The modulli of elasticty of Steel and concrete are constant. 6. The modular ratio has the value ,where. Is the permissible compressive strength of concrete in bending in Newton per mm square. 7. There are no initial stress in steel and concrete. CONCEPT OF TRANSFORMED OR EQUIVALENT SECTION ANALYSIS OF SINGLE REINFORCED BEAM A SINGLY REINFORCED BEAM SECTION IS SHOWN IN FIGURE 2.3 (a). To analyse this section it is necessary to convert it into a transformed or equivalent section of concrete.

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