Size of Steel Used in Construction

Size of Steel Used in Construction Sites | 6,8,10,12,16 mm Steel bars

In this article, we will discuss the size of steel used in construction sites.


  1. Introduction  

It is not fixed to use the size of steel bars for specific purposes. It is based on the types of construction and the aim of the structure that we are going to build.

Steel Bars are the construction material that is utilized to build structures like building, bridges, RCC roads, towers, etc. It is utilized in Concrete to give a better tensile strength in concrete as the tensile strength of concrete is very low as compared to the compressive strength of concrete.

To balance the bearing capacity of concrete structure in both tensile as well as compressive strength we need to utilize various sizes of steel rods according to design into the concrete. This type of concrete includes steel rods which are known as RCC (Reinforced Concrete Cement).

But we can see that usually utilized diameter of steel bars are for various structures can be written below,

The slabs in the building are built utilizing steel bars containing a diameter of 8mm, 10mm, 12mm.

Size of Steel Used in Construction


  2. Size of Steel Used in Construction  

In a similar way Beams and columns of the building are built utilizing 12mm to 25mm diameter of steel bars. But it is also based on the load design and the span of the beam and column.

Similarly, the size steel bars containing a diameter of 25mm, 32mm, and 36mm are used in hydraulic structures like Dam, bridges, aqueducts, reservoirs, etc.

At last, it is concluded that whatever be the structure like column, beam, slab, foundation, RCC wall, etc we utilize the following size of steel bars having a diameter of,

a. 6mm

b. 8mm

c. 10mm

d. 12mm

e. 16mm

f. 20mm

g. 25mm

h. 32mm

i. 36mm

Also, we can calculate the steel bars containing a diameter of 5 mm but they are utilized for the non-structural members.


Read Also: Unit weight of Steel


But if needed the constructors should order the factory to prepare the desired diameter of steel according to the need of the structure. So it may be, 40mm, 45mm, 50mm, 60mm, etc.