# Unit weight of construction materials- How to calculate it?

## What is Unit weight of construction materials?

The ratio of the weight of a material to its volume is known as the unit weight of that materials. Sometimes it is termed specific weight or weight density. It is denoted by (y) Gama.

If you want to calculate the unit weight of materials then you have to take unit volume of materials and its weight.

As we know that the volume is expressed in the terms of liters or  m3 and weight is measured in terms of Kg or KN. So, Unit weight can be expressed in Kg/L or  KG/m3 or KN/m3 .

The formula of unit weight is given below;

Read Also, Easy way to calculate unit weight of steel rod

## Why we need the unit weight of different constructional materials?

1. To estimate the total cost and materials as per volume.
2. Unit weight let us know how heavy is the materials.
3. The unit weight helps to calculate the total load which will be acted on the structure.
5. It helps to know the different characteristics of materials like permeability, compactness, etc.

There are many materials which are used in construction. The table below shows the Unit weight of construction materials which is commonly used in the construction sites.

## Unit weight of construction materials

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