In concrete calculation, we
always multiply Wet volume with 1.54 to get dry volume. But do you know
what is 1.54 or where this 1.54 came from? If You don’t know, no
problem. In this article, I will explain what is 1.54 while calculating quantity
of cement, sand, aggregates for concrete.
let us take a concrete cube.
The length of the concrete cube
= 1 m
The width of the concrete cube = 1 m
The height of the concrete cube = 1 m
Volume of concrete cube = length x
Width x Height = 1 x 1 x 1 = 1 m³ (Wet volume)
When we convert this we volume
into dry volume, the volume is increased by 54% of wet volume.
When we convert this we volume
into dry volume, the volume is increased by 54% of wet volume.
∴ Dry volume = Wet volume + 54% of Wet volume
= 1 + (54/100) x 1 =1 + 0.54 = 1.54
To convert wet volume of 1 m³
concrete into dry volume = 1.54
To convert wet volume of “n” m³
concrete into dry volume = 1.54 x n
Where n = Wet volume of concrete.
Example:
The width of the concrete cube = 3 m
The height of the concrete cube = 2 m
Wet volume = 4 x 3 x 2 = 24 m³
∴ Dry volume = ( Wet volume + 54% of wet volume)
= 24 + {(54/100) x 24}
= 36.96 m³
Note:
Always remember in concrete
calculation, we get wet volume first, to convert wet volume into dry volume,
multiply wet volume with 1.54.
