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The area of steel reinforcement for columns or beams is defined as an area of vertical reinforcement which is provided to absorb the bending tensile stresses in the longitudinal direction. Check FAQs
Ast=(Pf1.05)-(0.4fckAc)0.67fy
Ast - Area of Steel Reinforcement?Pf - Factored Load?fck - Characteristic Compressive Strength?Ac - Area of Concrete?fy - Characteristic Strength of Steel Reinforcement?

Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns Example

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Here is how the Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns equation looks like with Values.

Here is how the Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns equation looks like with Units.

Here is how the Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns equation looks like.

452.0003Edit=(583672Edit1.05)-(0.420Edit52450Edit)0.67450Edit

Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns Solution

Follow our step by step solution on how to calculate Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns?

FIRST Step Consider the formula
Ast=(Pf1.05)-(0.4fckAc)0.67fy
Next Step Substitute values of Variables
Ast=(583672kN1.05)-(0.420MPa52450mm²)0.67450MPa
Next Step Prepare to Evaluate
Ast=(5836721.05)-(0.42052450)0.67450
Next Step Evaluate
Ast=0.000452000315880913
Next Step Convert to Output's Unit
Ast=452.000315880913mm²
LAST Step Rounding Answer
Ast=452.0003mm²

Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns Formula Elements

Variables
Area of Steel Reinforcement
The area of steel reinforcement for columns or beams is defined as an area of vertical reinforcement which is provided to absorb the bending tensile stresses in the longitudinal direction.
Symbol: Ast
Measurement: AreaUnit: mm²
Note: Value should be greater than 0.
Factored Load
The factored load is multiplied by a specific factor designated by codes of practice to determine the strength of a structural member such as reinforced concrete.
Symbol: Pf
Measurement: ForceUnit: kN
Note: Value should be greater than 0.
Characteristic Compressive Strength
The Characteristic Compressive Strength is defined as the strength of the concrete below which not more than 5% of the test results are expected to fall.
Symbol: fck
Measurement: PressureUnit: MPa
Note: Value should be greater than 0.
Area of Concrete
The Area of Concrete is defined as the concrete area in a beam or column excluding the area of reinforcement.
Symbol: Ac
Measurement: AreaUnit: mm²
Note: Value should be greater than 0.
Characteristic Strength of Steel Reinforcement
The Characteristic Strength of Steel Reinforcement is the yield strength of steel.
Symbol: fy
Measurement: StressUnit: MPa
Note: Value should be greater than 0.

Other Formulas to find Area of Steel Reinforcement

​Go Area of Cross-section of Spiral Reinforcement given Volume
Ast=Vhπ(dc-Φ)

Other formulas in Short Axially Loaded Columns with Helical Ties category

​Go Factored Axial Load on Member of Spiral Columns
Pf=1.05(0.4fckAc+0.67fyAst)
​Go Characteristic Compressive Strength of Concrete given Factored Axial Load in Spiral Columns
fck=(Pf1.05)-0.67fyAst0.4Ac
​Go Area of Concrete given Factored Axial Load
Ac=(Pf1.05)-0.67fyAst0.4fck
​Go Characteristic Strength of Compression Reinforcement given Factored Load in Spiral Columns
fy=(Pf1.05)-(0.4fckAc)0.67Ast

How to Evaluate Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns?

Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns evaluator uses Area of Steel Reinforcement = (((Factored Load)/(1.05))-(0.4*Characteristic Compressive Strength*Area of Concrete))/(0.67*Characteristic Strength of Steel Reinforcement) to evaluate the Area of Steel Reinforcement, The Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns formula is defined as the area covered by the longitudinal reinforcement. Area of Steel Reinforcement is denoted by Ast symbol.

How to evaluate Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns using this online evaluator? To use this online evaluator for Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns, enter Factored Load (Pf), Characteristic Compressive Strength (fck), Area of Concrete (Ac) & Characteristic Strength of Steel Reinforcement (fy) and hit the calculate button.

FAQs on Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns

What is the formula to find Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns?
The formula of Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns is expressed as Area of Steel Reinforcement = (((Factored Load)/(1.05))-(0.4*Characteristic Compressive Strength*Area of Concrete))/(0.67*Characteristic Strength of Steel Reinforcement). Here is an example- 4.5E+8 = (((583672000)/(1.05))-(0.4*20000000*0.05245))/(0.67*450000000).
How to calculate Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns?
With Factored Load (Pf), Characteristic Compressive Strength (fck), Area of Concrete (Ac) & Characteristic Strength of Steel Reinforcement (fy) we can find Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns using the formula - Area of Steel Reinforcement = (((Factored Load)/(1.05))-(0.4*Characteristic Compressive Strength*Area of Concrete))/(0.67*Characteristic Strength of Steel Reinforcement).
What are the other ways to Calculate Area of Steel Reinforcement?
Here are the different ways to Calculate Area of Steel Reinforcement-
  • Area of Steel Reinforcement=Volume of Helical Reinforcement/(pi*(Diameter of Core-Diameter of Spiral Reinforcement))OpenImg
Can the Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns be negative?
No, the Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns, measured in Area cannot be negative.
Which unit is used to measure Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns?
Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns is usually measured using the Square Millimeter[mm²] for Area. Square Meter[mm²], Square Kilometer[mm²], Square Centimeter[mm²] are the few other units in which Area of Longitudinal Reinforcement for Columns given Factored Axial Load in Spiral Columns can be measured.
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