HOW TO CALCULATE THE QUANTITY OF CONCRETE BLOCKS FOR WALLS

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The quantity of concrete blocks calculation is very easy and necessary in every blocks wall constructions. For better understanding lets solve this example

Example:

Suppose we have a wall having a length of 14 feet and having a width 10 feet. The thickness of the wall will be 8 inches. Calculate the number of blocks required in this wall. The thickness of the mortar will be

Given Data:

Length     = 14 ft

Height       = 10 ft

Thickness = 8 inch

Blocks =?

Mortar =?

Solution:

The calculation was to be divided into 5 different steps

  1. Volume of wall
  2. The volume of 1 block
  3. The  volume of 1 block with mortar
  4. No of Blocks
  5. volume of Mortar

 

Step 1: volume of wall

volume of wall

Lenght = 14 feet

Height = 10 feet

width = 8 in or 0.666 feet

volume of wall

= lenght  x height  x width

= 14 x 10 x 0.666

= 93.24 cubic feet

 

Step 2: volume of 1 block :

Lenght   = 1 feet

Height    = 8 in or  0.666 feet

width     = 8 in or  0.666 feet

volumeof 1 block

= lenght x height x width

= 1 x 0.666 x 0.666

= 0.4443 cubic feet

Step 3: volume of 1 block with mortar

= Lenght  x height  x width

< mortar thickness = 1 inches or 25mm>

= 1.083  x 0.75 x 0.666

= 0.5414 cubic feet

 

Step 4: No of blocks

No of blocks

= vol of wall/vol of 1 block with mortar

= 93.24 / 0.5414

= 172 no of blocks

The total volume of blocks

= 172 x  0.4443

= 76.41 cubic feet

 

Step 5: Volume of mortar:   

volume of mortar

=  total volume  – the volume of blocks

= 93.24 – 76.41

= 16.83 cubic feet

33% volume will increases in 1 cubic foot when we convert from wet to dry condition so,

the volume of mortar required

= 16.83 x 1.33

= 22.38 cft Ans…

22.83 of mortar is req for the wall.

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HOW TO CALCULATE THE QUANTITY OF CONCRETE BLOCKS FOR WALLS 1


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