How to Calculate the Total Bags of Cement and Tones of Sand for a Particular Volume of Concrete

As an Engineer on site, you must know the amount of cement and sand require for a particular volume of concrete.

Knowing this will prevent you from running loss. I will explain to you how to calculate the amount of cement and sand require for any volume of concrete.

The calculations below is all about 1:2:4 mix ratio of Concrete

 

CALCULATING FOR CEMENTĀ 

TOTAL RATIO = 1+2+4
= 7
Since:
Cement = 1
Sand = 2
Granite = 4

We are dealing with cement, we have 1/7 = 0.143

For 1mĀ³ of cement = 1mĀ³ * 0.143
= 0.143mĀ³

Addition of waste and shrinkage 54% = (54/100 * 0.143) + 0.143
= 0.0772mĀ³ + 0.143mĀ³
= 0.22mĀ³

Density =Ā  Mass/Volume

1440 = 50/Volume

Volume = 0.03472mĀ³

1 Bag of Cement = 0.03472mĀ³

Y Bags of Cement = 1mĀ³

Y = 1/0.03472

Y = 28.8 bags of Cement

1mĀ³ of cement = 28.8 bags
0.22mĀ³ of cement = X bags

X = 6.3 bags of cement

Now for 1:2:4 mix ratio, the number of cement require to mix 1mĀ³ of concrete
= 6.3 bags.

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Assuming you are to calculate the amount of cement require for 0.55mĀ³ of concrete

1mĀ³ of ConcreteĀ  = 6.3 bags of cement

0.55mĀ³ of concrete = X bags of cement

X = 3.47 bags of cement.

This means 3.47 bags of cement will mix 0.55mĀ³ of concrete using 1 : 2 : 4 mix Ratio

 

CALCULATING FOR SAND

TOTAL RATIO = 1+2+4 = 7
Since we are dealing with sand, we have 2/7 = 0.285
For 1mĀ³ of sand = 1mĀ³ * 0.285
= 0.285mĀ³

Addition of 35% bulking = 0.099mĀ³
Addition of 10% waste = 0.03mĀ³
= 0.285 + 0.099 + 0.03
= 0.414mĀ³

0.65mĀ³ of sand = 1 ton of sand
0.414mĀ³ of sand = x tons of sand

X = 0.637 tons.

 

Now for 1:2:4 mix ratio, the number of sand require to mix 1mĀ³ of concrete
= 0.637 tons.

Assuming you are to calculate the amount of sand require for 0.55mĀ³ of concrete

 

1mĀ³ of concrete = 0.637 tons of sand

0.55mĀ³ of concrete = X tons of sand

X = 0.35 tons of Sand

 

This means 0.35 tons of sand will mix 0.55mĀ³ of concreteĀ using 1 : 2 : 4 mix Ratio

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Check outĀ How to Calculate The Total Tons of Granite for a Volume of Concrete

 

This is a must know calculation for Engineer, Quantity Surveyor and Site Manager on site to avoid wastage of Materials

Comment below to ask question, Add or Subtract

Thanks for Reading.

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Calculating Total Bags of Cement and Tones of Sand Require in a Particular Volume of Concrete

6 thoughts on “How to Calculate the Total Bags of Cement and Tones of Sand for a Particular Volume of Concrete”

  1. Anonymous says:

    Watch your computations bro, you messed up you used .283 on your computation instead of .285, 2/7= .285 yet you used .283 edit it because its misleading readers

    1. Cornelius says:

      Thanks for the correction. I already take note of that and proper amendment will be made with immediate effect.

  2. Umair says:

    AOA
    I want to apply plaster on the roof of my top floor flat can you please calculate me the cost of it I don’t know how much cement sand etc will require for it I want the final product to be at least 3 inches thick the area to cover is 1000 sqft
    thank you

    0
    1. Cornelius says:

      Please Check out How to Calculate The Total Bags of Cement for a Unit Area of Plastering for basic explanation, You can also Post this on our Forum for answers from different people.

      Thanks for Visiting Engineering Basic

      Stay Connected…..

  3. Anonymous says:

    Hello I want floor an area with concret 3cm thick and 10m wide, 11m long.so I wish to know what quantity of cement in bags, sand and granite in wheelbarrow to use. Thank u

  4. kwesi murwayi says:

    Good information, makes me remember some things i had forgotten. You know sometimes you go to the market place and you tend to forget what you learned in school. Very insightful information. Thanks again PIN.

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