# Some useful tips to find out the quantity of concrete blocks

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Concrete blocks are constructed with cast concrete like port land cement and aggregate, generally sand and fine gravel, for high-density blocks.

Lower density blocks are built up with various industrial wastes like fly ash or bottom ash, as an aggregate.

In this civil engineering article, you will learn how to work out the quantity of concrete blocks.

Suppose, the length of the concrete blocks is 405 mm, width is 152 mm (top view) and length is 405 mm and height is 200 mm (front view).

The length of the wall, where the concrete blocks will be applied, is 10m and the height of the wall is 3m.

Initially, it is required to determine the total volume of the wall as follow :-

V = Length x height x width = 10 x 3 x 0.152 = 4.56 m3 (152 mm = 0.152m)

Then, the volume of block is calculated as follow :-

V = Length x height x width = 0.405 x 0.152 x 0.2 = 0.012312 m3 (after converting mm to m)

Now, it is required to determine the volume of one block with mortar as follow :-

Suppose, the thickness of mortar = 1 inch or 25 mm

The length of the block = 405 mm, after adding mortar it becomes 405 + 25 = 430 mm = 0.43 m

### Also Read: How to Calculate Number of Bricks and Quantity of Cement and Sand in Mortar

As the mortar will be provided on one side, the height will also be increased as 200 +25 = 225 mm or 0.225m

So, V = Width x length x height = 0.152 x 0.43 x 0.225 = 0.014706 m^{3}

Therefore, total numbers of blocks will be calculated with the following formula :-

Numbers of blocks = Total volume of wall / volume of one block with mortar

Numbers of blocks = 4.56 / 0.014706 = 310 numbers

Go through the following civil engineering video to calculate quantity of concrete blocks.

Video Source: Civil Engineers

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