How To Calculate Quantities Of Materials For Concrete


Calculation Of Materials For Different Mix Ratio:

Quantity estimation of building materials is essentially required in any construction work and the quantity of materials depends on the mix proportions of the concrete.

In our previous article, we have already discussed how to calculate bricks in a wall. Today we will discuss how to calculate quantities of materials for different concrete mix ratios. (Dry mix method)

We will calculate quantities of materials for 1 m3 concrete (By volume).

Let us assume the mix proportion is 1 : 2: 4 (Cement : Sand : Stone = a:b:c)

Volume of wet concrete = 1 m3

Volume of dry concrete = 1 × 1.54 = 1.54 m3

What Is 1.54 Given Below:

Or You Can check out this article – What is 1.54 in Concrete Calculation?

Calculation For Cement

Formula, Cement = (Volume of dry concrete/a+b+c) × a

  • = (1.54/a+b+c) × a = [(1.54/1+2+4)] × 1 = 0.22 cum

Now density of cement = 1440 kg/cu.m

  • Volume of cement = 0.22 ×  1440 =316.8 kg.

As we know, 1 bag of cement contains 50 kg of cement .

  • Cement bags required = 316.8/50 = 6.33 bags.

Calculation For Sand

Formula,  Sand = (Volume of dry concrete/a+b+c) × b

  • = (1.54/a+b+c) × b = (1.54/1+2+4) × 2 = 0.44 cu.m.

Calculation For Aggregates

Formula, Aggregatess = (Volume of dry concrete/a+b+c) × c

  • = (1.54/a+b+c) ×c  = (1.54/1+2+4) × 4 = 0.88 cu.m.

Calculation For Water Content

Let us assume the water cement ratio of concrete is 0.45.

  • w/c = 0.45
  • Required water for 1 bag cement = 0.45 × 0.0353 = 0.0159 cu.m.

Where volume of 50 kg cement = 0.0353 cu.m

  • 1 m3 water = 1000 Litre

Required water for 1 bag cement=0.0159 × 1000 = 15.9 Litre.

Required water for 6.33 bags cement = 6.33 × 15.9 = 101 Litre.

Summary

  • Cement = 6.33 bags.
  • Sand = 0.44 cum
  • Aggregates = 0.88 cum
  • Water = 101 litre.

Note: Yield of concrete is considered as 67% & Wastages of materials = 2%

You can use the same formula for different mix proportions such as 1:1.5:3 etc.

Here, we have used cubic meter unit but you can also calculate in cubic feet unit.

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Also Read

How To Calculate Volume Of Cement Bag
How To Calculate Cement Bags In M3
How To Calculate Cement, Sand For Plastering
How To Calculate Bricks In A Wall

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67 thoughts on “How To Calculate Quantities Of Materials For Concrete”

  1. In Note you have written “Yield of concrete is considered as 67%” what does that actually mean? Please elaborate.

    Reply
  2. sir please explain what is 0.353 which you multiply with 0.45 in calculation of water content .. please i need the answer will be very thankfull to you

    Reply
  3. dear sir, thank you so much for this information, please upload how to calculate no of footing and coloumn in a roof slab??

    Reply
  4. You can calculate the total volume of stone required through using the formula given below:
    length x width x height = volume in cubic feet
    However, it could be quite difficult for a non-professional to calculate the total volume, therefore it would be best to hire a professional Brick & Stone Repointing service provider to do the job for you.

    Reply
  5. Thank you for your kind sharing. As a guideline, please advise on the nominal mix proportion by Volume for M40 would be 1 : ??? : ???
    The approximate quantities are
    Cement = ??? bags/cum of concrete
    Sand = ??? cft/cum
    Aggregate = ??? cft/cum Your kind sharing is very much appreciated

    Reply
  6. Concrete ratio and the quantity of material involved in the formation of the concrete what civil engineer as the fresher dont know these days , i recommend them to read your article well written and they can easily learn from here and sharpen their skills for the interview.

    Reply
  7. Admin let’s calculate quantity of these ingredients using different dimensions
    Like casting a slab of about 10m*5m*0.125m
    Now how we use that 54%?

    Reply
  8. Sometimes we can use 1.57 as as dry vol instead of 1.54
    Thanks so much
    For those asking wea 0.0333 is coming from
    Volume one bag of cement=50kg of 1bag of cement divide by density of cement wic z 1440kg/m3

    Reply
  9. Thank you Sir for good training about the topic of construction materials estimation I just extract very nice techniques in any construction, Now we expect the other techniques from you in the field of Engineering!!!

    Reply

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