How To Calculate Quantities Of Materials For Concrete

Calculation Of Materials For Different Mix Ratio:

Quantity estimation of materials is essentially required in any construction works and quantity of materials depend 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 mix ratio of concrete. (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/cum

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 cum.

Calculation For Aggregates:

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

= (1.54/a+b+c) ×c  = (1.54/1+2+4) × 4 = 0.88 cum.

Calculation For Water Content:

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

w/c = 0.45

Required water for 1 bag cement = 0.45 × 0.0353 = 0.0159 cum.

Where volume of 50 kg cement = 0.0353 cum

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.

Save

Save

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

  1. 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
  2. dear sir, thank you so much for this information, please upload how to calculate no of footing and coloumn in a roof slab??

    Reply
  3. 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
  4. 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
  5. 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

Leave a Comment


error: Content is protected !!