Steel Reinforcement for Civil Engineers I +30 Tips and Trick

“Technical Knowledge of Steel Reinforcement”

Hey, guys what’s up? I hope you are alright everywhere. So friends today I will explain about the +35 Steel Reinforcement Technical Knowledge for fresher Civil engineers. It is like Theoretical knowledge about steel reinforcements. So guys if you are a fresher civil engineer and you are going to the job field you need to know this knowledge. More than more steel reinforcement is to be used in the construction field. So that we need to learn more than more technical knowledge of steel reinforcement. 

Steel Reinforcement


Steel Reinforcement

Each and everywhere steel Reinforcement should be used for better construction. So that in this article I will explain the Technical Knowledge of Reinforcement. If you are a fresher civil engineer, before goes to the job sector you should have more than more knowledge about steel reinforcement. 


I will shear you more than 35 points of technical knowledge of steel Reinforcement. The formula, terms, and conditions, strength, spacing of bar, lapping, concrete cover, etc. This is concluded in this article. Which are the following? 


Why cover blocks used in Reinforcement:

  1. Maintain a specified distance between Rebar and shuttering.
  2. To protect steel Reinforcement from corrosion. 
  3. Provide thermal insulation. 


Concrete cover for Steel Reinforcement:

  1. Foundation = 3” or 75 mm.
  2. Column = 1.5” or 40 mm.
  3. Beam = 1.5” or 40 mm.
  4. Slab = 0.75” or 20 mm.
  5. Stair = 0.75” or 20 mm.


Formula to find out the weight of  Reinforcement in meter:

Weight of steel =D²/162.2 kg/m.


Formula to find out the weight of Reinforcement in feet:

Weight of steel =D²/533 kg/ft.


a Minimum number of bars in a square shape column = 4 numbers. 


a Minimum number of bars in a round shape column = 6 numbers. 


Types of steel:

• Mild steel = 250 N/m250

Characteristics strength Fy = 250 N/mm²


• HYSD = High yield strength deformed bars

Fe 415, fy=415 N/mm²

Fe 500, fy=500 N/mm²


Maximum chair spacing = 1 meter.


MS bar for the chair shouldn’t be less than 12 mm in diameter. 


Deformed of Reinforcement:



Thermomechanical Treated Bars.



This means Thermax Powered Bars.



which is Super Ductile Bars.



it is Super Yield Strength Deformed Bars.



The full from Cold Twisted Bars Deformed. 


The standard length of MS bar.

The full length of deformed MS bars is about 40 feet or 12 meters. 



Tension zone

T. Lapping = 50 D to 60 D (D=diameter of the bar)

compression zone

C. Lapping = 24 D


Minimum percentage of steel in column = 0.8 % of the gross area of the column. 


Maximum percentage of steel in column = 6% of the gross area of the column. 


The transverse Reinforcement of the column is called Ties.


The transverse Reinforcement of the column is called stirrups. 


How to calculate no stirrups in beam:

• Formula = (clear span/ C to C length)+1


Minimum hook length of stirrups = 9D (90mm)


Stirrups hook angle be 135°.


The end hook angle of longitudinal bars of column and beam should be 90°.


The length of the hook should not be less than 12 d. Where d is the diameter of the bar.


No lapping should be placed in the Tension zone. 


More than 50 % of bars shouldn’t be lapped in one zone.


Deflection means = Temporary displacement 


Deformation means = Permanent displacement. 


Why do we use only steel as a Reinforcement?

• Only the steel should be used for Reinforcement because of the coefficient of thermal expansion. 


For binding one ton of MS bar, 8 kg to 12 kg binding wire is required. 


The minimum diameter of bars used is slab: 8 mm.


Minimum diameter of bars used in Column: 12 mm.


Minimum diameter of bars used in dowel bars: 12 mm.

The maximum diameter of bars used in the slab shouldn’t exceed 1/8th of the total slab thickness. 


Young modulus of steel (Es)=2×10⁵ N/mm².


The strength of reinforcement should not be less than 15 % of its designed strength. 


Ms bar larger than 36 mm diameter shouldn’t be lapped welding is preferred. 


The longitudinal bars should be bent at 90° and the bent length should not be less than 18” or 1.5 feet.



This is the most important Technical knowledge of steel Reinforcement for the fresher civil engineers. The construction was used for steel Reinforcement and the engineer should have knowledge of all works of Reinforcement in the construction. So I complete a collection of the Technical knowledge of Steel Reinforcement for the fresher civil engineer.


Before you go to the working field the above points should learn to easily work in the field. After getting this Technical Information on Reinforcement you will be a successful person at the base of steel reinforcements. If you like this article if you get informative knowledge about steel reinforcement comment to me.


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