Interview Questions Answers in Civil Engineering, Mechanical Engineering

Questions / { dushyant }

Questions Answers Category Views Company eMail

What Is the Thumb rule to calculate depth and dia of pile required to carry specified load on differeent soil

Civil Engineering 2251

Which technology is better for designing an STP system in a Commercial Mall. 1) SAFF (Submerged Aerobic Fixed Film) or 2) FAB (Fludized Aerobic Biological ) or 3) Some other.

BARC,

Mechanical Engineering 1650

Answers / { dushyant }

Question { Jaypee, 8677 }

how much % of fine sand(jamuna sand)we can use with coase
sand for making concrete.

Answer

the amount of sandto be used depends on the mix design.

Is This Answer Correct ?

5 Yes

0 No

Question { 13081 }

state the main objectives of underpinning

Answer

Under pinning is simply a process of strenthening the
deteriorated foundation of the building without causing any
harm to the building.

Is This Answer Correct ?

16 Yes

0 No

Question { Simplex, 115586 }

What is the unit weight if concrete?.

Answer

Weight of concrete varies with mix proportion but how ever
for P.C.C it is counted as 24kN/m^3 and for R.C.C as
25kN/m^3

Is This Answer Correct ?

45 Yes

7 No

Question { 44619 }

WHAT IS THE %WASTAGES OF CEMENT, BRICK,TILES, STEEL,IN 1
M3,10M2,1 TON RESPECTIVELY

Answer

The Permissible wastage for cement is 3%, for bricks it is
2.5 % and for tiles it depends on the floor shape and size
which can be permitted upto 6%, while wastage is steel is
allowed only 2.5%

Is This Answer Correct ?

13 Yes

9 No

Question { 11123 }

why we are doing post tensioning in beams and slabs.
it is economical compare to rcc? how?

Answer

Post tensioning in RCC is done to achieve more space by
reducing beam depths and increasing column spacing. this
helps in creating a hall or a large space workshop etc
without any column in between.

P.T. is no where cheaper than RCC rather P.T. is a costlier
way of construction but still it is preferred to achieve
more space or else increasing the span (as if in Bridges).

Is This Answer Correct ?

10 Yes

0 No

Question { Reliance, 23549 }

Cost control in civil construction as well as Quality control

Answer

If one can provide a control on Quality, Cost and Time all
at a time then the cost can be perfectly optimised.

For the above said minimum wastage and timely completion of
work must be assured.

This can help in cost control as it can help us reduce
inventory cost.

Also labour time wastage can be reduced if all work is done
with a planned schedule. whichin turn affects the cost.

Lean production is the best method i consider to optimise
the cost.

Is This Answer Correct ?

1 Yes

0 No

Question { Wipro, 212436 }

How to convert n/mm2 in to kg/cm2?

Answer

1N = 9.8 Kg
1mm = 0.1cm
1N/mm^2 = 9.8kg/(0.1cm)^2
= 980kg/cm^2

Is This Answer Correct ?

16 Yes

51 No

Question { Wipro, 212436 }

How to convert n/mm2 in to kg/cm2?

Answer

1 kg = 9.81 N

1 cm = 100 m

9.81 N / m^2 = kg / 10000 sqcm
= ( 1/98100 ) kg / sqcm
= 0.0000102 kg / sqcm

please reffer the link

http://www.cleavebooks.co.uk/scol/ccpress.htm

for most kind of conversions.

Is This Answer Correct ?

15 Yes

26 No

Question { IVRCL, 24102 }

M40 grade concrete has 40 n/mm2 strength.here what"s mean by
n?

Answer

Actually it is typed wrong
Its not smalll letter "n", its capital letter "N" which
stands for Newton that is the SI unit of Load

Is This Answer Correct ?

34 Yes

0 No

Question { NTPC, 18708 }

how is the wastage component in structural steel being
considered while doing the reconcillation for the
fabrication with returning of scrap under 1 meter length

Answer

as per indian standards only 3% wastage is allowed
out of this 2 % is considerable and 1 % in non considerable

Is This Answer Correct ?

32 Yes

2 No

Question { L&T, 52295 }

for 100sft of Cement plastering ratio 1:6 How much quantity
of cement and sand required.

Answer

as per west baengal sor
10mm plaster 0.2cum cement and 1.2cum sand
15mm plaster 0.3cum cement and 1.8cum sand
20mm plaster 0.4cum cement and 2.4cum sand

Is This Answer Correct ?

22 Yes

16 No

Question { L&T, 27001 }

how many m3, mason should done per day if he going to build
4.5 inch brick work(partition wall)?

Answer

generally a masson can build nearly 1 cum brickwork per day
but as this wall is thick one it can be taken upto 1.2
cum/day/masson

Is This Answer Correct ?

7 Yes

4 No

Question { 4407 }

compare the cost of construction of a building by cement and
one in which cement is substituted by fly ash.

Answer

Cement can not be substituted by fly ash
Only some specific amount of fly ash can be added to cement
to reduce the cost of cement.

Is This Answer Correct ?

3 Yes

0 No

Question { 66389 }

HOW TO CALCULATE LABOUR COST FOR CONCRETE WORK PER CUBIC
METER.

Answer

for the rates of all labours, masssons etc we have to check
the rates from the schedule of retes of that area

Is This Answer Correct ?

11 Yes

4 No

Question { 6378 }

what is SPLICES & where it is used?????????????

Answer

A splice plate is the plate that is attached to two
different sections of steel by using revate or bole in
order to make the two sections 1 single unit.

Is This Answer Correct ?

6 Yes

1 No