Types Of Steel Bars in Lahore for Building Construction
There are 2 types of steel bars used in construction:
- Mild steel bars
- Deformed steel bars
1. Mild Steel bars:
Mild steel bars are used for tensile stress of RCC (Reinforced cement concrete) slab beams etc. in reinforced cement concrete work. These steel bars are plain in outside and are round sections of diameter from 6 to 50 mm. These rods are manufactured in long lengths and can be cut quickly and be bent easily without damage.
2. Deformed Steel bars:
As deformed steel bars are rods of steels provided with lugs, ribs or deformation on the outside of the steel bar, these steel bars minimize slippage in material and increases the bond between the two materials. Steel deformed bars have more tensile stresses than that of mild steel plain bars. These steel bars can be used without end hooks. The deformation should be spaced along the steel bar at substantially uniform distances.
To limit cracks that may develop in reinforced concrete around mild steel bars due to stretching of steel bars and some lose of bond under load it is common to use deformed steel bars that have projecting ribs or are twisted to advance the bond with concrete. These steel bars are produced in sections from 6 mm to 50 mm dia.
In addition, the strength of bonds of steel deformed bars calculated should be 40 to 80 % higher than that of plain round bars of the same nominal size. And it has more tensile stress than that of plain round steel bars of the same nominal size.
Cold twisted deformed (Ribbed or Tor Steel Bars) bars are recommended as high quality steel deformed bars for construction work by structural Engineer.
Steel Deformed Bars Grade 60 in Lahore
