Factored Axial Load on Member Solution

STEP 0: Pre-Calculation Summary
Formula Used
Factored Load on Member = (0.4*Characteristic Compressive Strength*Area of Concrete)+(0.67*Characteristic Strength of Steel Reinforcement*Area of Steel Reinforcement)
Pfm = (0.4*fck*Ac)+(0.67*fy*Ast)
This formula uses 5 Variables
Variables Used
Factored Load on Member - (Measured in Newton) - Factored Load on Member is the specific factor designated by codes of practice to determine the strength of a structural member such as reinforced concrete.
Characteristic Compressive Strength - (Measured in Megapascal) - 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.
Area of Concrete - (Measured in Square Millimeter) - The Area of Concrete is defined as the concrete area in a beam or column excluding the area of reinforcement.
Characteristic Strength of Steel Reinforcement - (Measured in Megapascal) - The Characteristic Strength of Steel Reinforcement is the yield strength of steel.
Area of Steel Reinforcement - (Measured in Square Millimeter) - 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.
STEP 1: Convert Input(s) to Base Unit
Characteristic Compressive Strength: 20 Megapascal --> 20 Megapascal No Conversion Required
Area of Concrete: 52450 Square Millimeter --> 52450 Square Millimeter No Conversion Required
Characteristic Strength of Steel Reinforcement: 450 Megapascal --> 450 Megapascal No Conversion Required
Area of Steel Reinforcement: 452 Square Millimeter --> 452 Square Millimeter No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Pfm = (0.4*fck*Ac)+(0.67*fy*Ast) --> (0.4*20*52450)+(0.67*450*452)
Evaluating ... ...
Pfm = 555878
STEP 3: Convert Result to Output's Unit
555878 Newton -->555.878 Kilonewton (Check conversion ​here)
FINAL ANSWER
555.878 Kilonewton <-- Factored Load on Member
(Calculation completed in 00.004 seconds)

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Short Axially Loaded Tied Columns Calculators

Area of Longitudinal Reinforcement for Columns given Factored Axial Load on Member
​ LaTeX ​ Go Area of Steel Reinforcement = (Factored Load on Member-0.4*Characteristic Compressive Strength*Area of Concrete)/(0.67*Characteristic Strength of Steel Reinforcement)
Area of Concrete given Factored Axial Load on Member
​ LaTeX ​ Go Area of Concrete = (Factored Load on Member-0.67*Characteristic Strength of Steel Reinforcement*Area of Steel Reinforcement)/(0.4*Characteristic Compressive Strength)
Factored Axial Load on Member
​ LaTeX ​ Go Factored Load on Member = (0.4*Characteristic Compressive Strength*Area of Concrete)+(0.67*Characteristic Strength of Steel Reinforcement*Area of Steel Reinforcement)
Area of Longitudinal Reinforcement given Gross Area of Concrete
​ LaTeX ​ Go Area of Steel Reinforcement in Compression = Percentage of Compression Reinforcement*Gross Area of Concrete/100

Factored Axial Load on Member Formula

​LaTeX ​Go
Factored Load on Member = (0.4*Characteristic Compressive Strength*Area of Concrete)+(0.67*Characteristic Strength of Steel Reinforcement*Area of Steel Reinforcement)
Pfm = (0.4*fck*Ac)+(0.67*fy*Ast)

What is Axial Load?

An axial load is any force whether tensile or compressive in nature acting parallel to the centroidal / longitudinal axis of the member.

If an axial load coincides with centroidal axis of the member then it is called concentric axial load and if an axial load is at a distance from the axis then it is called eccentric axial load.

How to calculate the Factored Axial Load?

The factored concentric load applied on short, tied columns is resisted by the concrete of area Ac and longitudinal steel of areas effectively held by lateral ties at intervals. Assuming the design strengths of concrete and steel are 0.4fck and 0.67fy we calculate the factored axial load.

How to Calculate Factored Axial Load on Member?

Factored Axial Load on Member calculator uses Factored Load on Member = (0.4*Characteristic Compressive Strength*Area of Concrete)+(0.67*Characteristic Strength of Steel Reinforcement*Area of Steel Reinforcement) to calculate the Factored Load on Member, The Factored Axial Load on Member formula is defined as an axial load multiplied by a certain factor designated by codes of practice to determine the strength of a structural members such as reinforced concrete. Factored Load on Member is denoted by Pfm symbol.

How to calculate Factored Axial Load on Member using this online calculator? To use this online calculator for Factored Axial Load on Member, enter Characteristic Compressive Strength (fck), Area of Concrete (Ac), Characteristic Strength of Steel Reinforcement (fy) & Area of Steel Reinforcement (Ast) and hit the calculate button. Here is how the Factored Axial Load on Member calculation can be explained with given input values -> 0.555878 = (0.4*20000000*0.05245)+(0.67*450000000*0.000452).

FAQ

What is Factored Axial Load on Member?
The Factored Axial Load on Member formula is defined as an axial load multiplied by a certain factor designated by codes of practice to determine the strength of a structural members such as reinforced concrete and is represented as Pfm = (0.4*fck*Ac)+(0.67*fy*Ast) or Factored Load on Member = (0.4*Characteristic Compressive Strength*Area of Concrete)+(0.67*Characteristic Strength of Steel Reinforcement*Area of Steel Reinforcement). 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, The Area of Concrete is defined as the concrete area in a beam or column excluding the area of reinforcement, The Characteristic Strength of Steel Reinforcement is the yield strength of steel & 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.
How to calculate Factored Axial Load on Member?
The Factored Axial Load on Member formula is defined as an axial load multiplied by a certain factor designated by codes of practice to determine the strength of a structural members such as reinforced concrete is calculated using Factored Load on Member = (0.4*Characteristic Compressive Strength*Area of Concrete)+(0.67*Characteristic Strength of Steel Reinforcement*Area of Steel Reinforcement). To calculate Factored Axial Load on Member, you need Characteristic Compressive Strength (fck), Area of Concrete (Ac), Characteristic Strength of Steel Reinforcement (fy) & Area of Steel Reinforcement (Ast). With our tool, you need to enter the respective value for Characteristic Compressive Strength, Area of Concrete, Characteristic Strength of Steel Reinforcement & Area of Steel Reinforcement and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Factored Load on Member?
In this formula, Factored Load on Member uses Characteristic Compressive Strength, Area of Concrete, Characteristic Strength of Steel Reinforcement & Area of Steel Reinforcement. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Factored Load on Member = (0.4*Characteristic Compressive Strength+(Percentage of Compression Reinforcement/100)*(0.67*Characteristic Strength of Steel Reinforcement-0.4*Characteristic Compressive Strength))*Gross Area of Concrete
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