:: Home Page            
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
   Refer this Site  Refer This Site to Your Friends  Site Map  Bookmark this Site  Set it as your HomePage  Contact Us     Login  |  Sign Up                      
Categories >> Engineering >> Civil Engineering


 Civil Engineering interview questions  Civil Engineering Interview Questions (3112)
 Mechanical Engineering interview questions  Mechanical Engineering Interview Questions (3298)
 Electrical Engineering interview questions  Electrical Engineering Interview Questions (13408)
 Electronics Communications interview questions  Electronics Communications Interview Questions (2381)
 Chemical Engineering interview questions  Chemical Engineering Interview Questions (421)
 Aeronautical Engineering interview questions  Aeronautical Engineering Interview Questions (77)
 Bio Engineering interview questions  Bio Engineering Interview Questions (17)
 Metallurgy interview questions  Metallurgy Interview Questions (80)
 Industrial Engineering interview questions  Industrial Engineering Interview Questions (165)
 Instrumentation interview questions  Instrumentation Interview Questions (2390)
 Automobile Engineering interview questions  Automobile Engineering Interview Questions (106)
 Mechatronics Engineering interview questions  Mechatronics Engineering Interview Questions (38)
 Marine Engineering interview questions  Marine Engineering Interview Questions (45)
 Power Plant Engineering interview questions  Power Plant Engineering Interview Questions (78)
 Engineering AllOther interview questions  Engineering AllOther Interview Questions (1201)
how do we calculate quantity of cement , sand and 
aggregates in 1 m3 of M30 grade concrete ?
 Question Submitted By :: Civil-Engineering
I also faced this Question!!     Answer Posted By  
# 1
take the ratio 1:1.5:3
cement =1
sand =1.5
metal =3
So what is the ratio we want to mixing 1+1.5+3=5.5
Volum of wet cement concret is 1.54 to 1.57
unit weight of cement bag is 1440 kg/cum
one bag of cement = 50/1440 = 0.034722 cum

SOLUTION : CEMENT = 1.54/5.5 =0.28
=0.28/0.0347 = 8.069 ( 8 bags)
one bag of cement =50 kg X 8.069 = 403.45 kgs.

SAND solution =0.28 X 1.5 = 0.42 Cum
1.5 is the mixing proportion
METAL SOLUTION = 0.28 x 3 = 0.84 cUM.
3 is the mixing proportion
1 Cum cement concrete is 1:1.5:3 ratio

cement = 403.45 kgs.
sand = 0.42 Cum.
metal = 0.84 Cum.
Is This Answer Correct ?    204 Yes 33 No
# 2
M30- cement=1/4*1.54=0.385*28.8=11bags
agregate 0.385*2=0.77cum

Notes;why we multiply by 1.54
dry dencity=1.54*wet denciti in
Is This Answer Correct ?    143 Yes 55 No
Sachdeva D.p
# 3
Is This Answer Correct ?    186 Yes 120 No
# 4
The approach by Sjtbehera is totally correct but has some
little silly mistakes...I have tried to give a rectified

In the case M30 design mix, the quantities of cement,sand
and aggregates cannot be calculated as it is a variable
quantity.It depends upon the Mix designer how much quantity
of cement,sand and aggregates he will employ.His only
intention would be to design a mix whose specified
characteristic compressive strength at 28 days=30 N/
But in case of nominal mix we can use 1:1:2
Let us consider a volume of 10 cu. m (Wet concrete)

It is difficult to access exactly the amount of each
material required to produce 10 cu m of wet concrete when
deposited in place.
Hence to convert the wet volume into dry volume,
Increase by 54 % to account for shrinkage and wastage

Thus it becomes=15.4 cu. m (Variable upto 15.70)

Calculating cement, sand and aggregates in the mix:
Total summation of proportion=1+1+2=4

Cement = 15.4/4= 3.85 cu. m =3.85/0.0347=110 bags
Sand=15.4/4=3.85 cu. m
Aggregates(20mm to 6mm)=15.4 x (2/4)=7.70 cum

Hope u have understood and the mistake is clarified!!!
Is This Answer Correct ?    81 Yes 27 No
Rajarshi Basu
# 5
Take the retio 1:1.5:3
Cement = 1
Sand = 1.5
Aggregates = 3
The volume of none mixed material is 1.52 m3 for one cu.m
mexid concret becouse the the aggregate sand and cement
have porosity that will fill with some of sand and
cement,so 1.52/(1+1.5+3)=1.52/5.5=0.276
Cement=0.276*1=0.276 cu.m = 0.276/0.036*50 bag = 383kg
0.036 is one bag volume
Sand = 0.276*1.5 = 0.414 cu.m
Aggregate = 0.276*3 = 0.828 cu.m
0.276+0.414+0.828=1.518 near to 1.52
Is This Answer Correct ?    14 Yes 1 No
# 6
Take a Ratio 1:1.5:3
Now 1+1.5+3= 5.5
Now Divide This By 1.52 Which Is wet Volume
Now 1.52/5.5 =0.276
Now Multiply This by 30 Coz 1 Cum Of Cement Contains 30
bags dry.
==> 0.276 X 30 = 8.29 Bags Or 414 Kg cement.
Is This Answer Correct ?    47 Yes 35 No
Rahul Mehta J.e
# 7
for designing 1m3 concrete of M25 mix the ratio is 1:1:2
for calculating cement,sand and course aggregate ,
cement= 1/(1+1+2)=.25
density of cement =1440kg/m3
cement required for this mix=1440*.25=360kg=6bags+10kg
course aggregate=1-.5=.5m3
this methode of designing is known as volume batching ,this
methode will be ues to design mixes upto m25.
Is This Answer Correct ?    39 Yes 32 No
Subilash .s(civil Engineer)
# 8
For m30 8 bags cement 
Is This Answer Correct ?    8 Yes 2 No
# 9
for m30 grade .we have to calculate the quantity of all
ingredients of concrete by design mix as per IS depends upon the whether admixture is used or not.
Is This Answer Correct ?    25 Yes 20 No
Samsulhoque@jadavpur Universit
# 10
first of all We should conseder in our colculation the
ratio of cement,Sand , aggregate and water cement ratio
which we have received from mix design test
Is This Answer Correct ?    8 Yes 4 No
Engineer M.aziz

Other Civil Engineering Interview Questions
  Question Asked @ Answers
how much binding wire is reqd for 1 MT IVRCL 7
What should be the 28 days cube strength for M-25 grade concrete?How it is connected with acceptance criteria of fck+3 as per IS 456-2000 and why? IVRCL 3
what is the proportion of m20 grde concrete? also how much water is required for this proportions? As there were any formula for water-quantity?   3
How to Calculate steel   8
what means if slump is less than 25mm and greater than 80mm?   7
What is the diffrence between FE 415 & FE 500 TMT BARS Gammon 7
How may digree of freedon in four bar chain.   1
In case of tunnels (Railway) what is the way of securing a wall beam? L&T 1
In pile foundation which kind of action are take place?   2
advantage and dis adventagesof using crusher dust insted of sand in rcc works DLF 3
shuttering consumption per square feet in multi storeyed building? L&T 4
For more Civil Engineering Interview Questions Click Here 

Copyright Policy  |  Terms of Service  |  Articles  |  Site Map  |  RSS Site Map  |  Contact Us
Copyright 2013  All Rights Reserved.   ::