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Axial Load Capacity is defined as the maximum load along the direction of the drive train. Check FAQs
Pu=Φ((Astfy(3eDb)+1)+(Agf'c(12Le(L+0.67Db)2)+1.18))
Pu - Axial Load Capacity?Φ - Resistance Factor?Ast - Area of Steel Reinforcement?fy - Yield Strength of Reinforcing Steel?e - Eccentricity of Column?Db - Bar Diameter?Ag - Gross Area of Column?f'c - 28-Day Compressive Strength of Concrete?L - Effective Length of Column?

Ultimate Strength for Short, Square Members when Governed by Compression Example

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With units
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Here is how the Ultimate Strength for Short, Square Members when Governed by Compression equation looks like with Values.

Here is how the Ultimate Strength for Short, Square Members when Governed by Compression equation looks like with Units.

Here is how the Ultimate Strength for Short, Square Members when Governed by Compression equation looks like.

1321.9762Edit=0.85Edit((7Edit250Edit(335Edit12Edit)+1)+(33Edit55Edit(123000Edit35Edit(3000Edit+0.6712Edit)2)+1.18))
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Ultimate Strength for Short, Square Members when Governed by Compression Solution

Follow our step by step solution on how to calculate Ultimate Strength for Short, Square Members when Governed by Compression?

FIRST Step Consider the formula
Pu=Φ((Astfy(3eDb)+1)+(Agf'c(12Le(L+0.67Db)2)+1.18))
Next Step Substitute values of Variables
Pu=0.85((7mm²250MPa(335mm12mm)+1)+(33mm²55MPa(123000mm35mm(3000mm+0.6712mm)2)+1.18))
Next Step Convert Units
Pu=0.85((7mm²250MPa(30.035m0.012m)+1)+(33mm²55MPa(123m0.035m(3m+0.670.012m)2)+1.18))
Next Step Prepare to Evaluate
Pu=0.85((7250(30.0350.012)+1)+(3355(1230.035(3+0.670.012)2)+1.18))
Next Step Evaluate
Pu=1321.97623269127N
LAST Step Rounding Answer
Pu=1321.9762N

Ultimate Strength for Short, Square Members when Governed by Compression Formula Elements

Variables
Axial Load Capacity
Axial Load Capacity is defined as the maximum load along the direction of the drive train.
Symbol: Pu
Measurement: ForceUnit: N
Note: Value should be greater than 0.
Resistance Factor
The Resistance Factor accounts for the possible conditions that the actual fastener strength may be less than the calculated strength value. It is given by AISC LFRD.
Symbol: Φ
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Area of Steel Reinforcement
The Area of Steel Reinforcement is the cross-sectional area of steel reinforcement.
Symbol: Ast
Measurement: AreaUnit: mm²
Note: Value should be greater than 0.
Yield Strength of Reinforcing Steel
The Yield Strength of Reinforcing Steel is the maximum stress that can be applied before it begins to change shape permanently. This is an approximation of the elastic limit of the steel.
Symbol: fy
Measurement: StressUnit: MPa
Note: Value should be greater than 0.
Eccentricity of Column
The Eccentricity of Column is the distance between the middle of the column's cross-section and the eccentric load.
Symbol: e
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Bar Diameter
Bar Diameter are most usually comprised to 12, 16, 20, and 25 mm.
Symbol: Db
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Gross Area of Column
The Gross Area of Column is the total area enclosed by the column.
Symbol: Ag
Measurement: AreaUnit: mm²
Note: Value should be greater than 0.
28-Day Compressive Strength of Concrete
The 28-Day Compressive Strength of Concrete is the average compressive strength of concrete specimens that have been cured for 28 days.
Symbol: f'c
Measurement: StressUnit: MPa
Note: Value should be greater than 0.
Effective Length of Column
The Effective Length of Column can be defined as the length of an equivalent pin-ended column having the same load-carrying capacity as the member under consideration.
Symbol: L
Measurement: LengthUnit: mm
Note: Value should be greater than 0.

Other Formulas to find Axial Load Capacity

​Go Ultimate Strength for Short, Square Members when Controlled by Tension
Pu=0.85bLf'cΦ(((((eL)-0.5)2)+(0.67(DbL)Rho'm))-((eL)-0.5))

How to Evaluate Ultimate Strength for Short, Square Members when Governed by Compression?

Ultimate Strength for Short, Square Members when Governed by Compression evaluator uses Axial Load Capacity = Resistance Factor*((Area of Steel Reinforcement*Yield Strength of Reinforcing Steel/((3*Eccentricity of Column/Bar Diameter)+1))+(Gross Area of Column*28-Day Compressive Strength of Concrete/((12*Effective Length of Column*Eccentricity of Column/((Effective Length of Column+0.67*Bar Diameter)^2))+1.18))) to evaluate the Axial Load Capacity, The Ultimate Strength for Short, Square Members when Governed by Compression formula is defined as Ultimate strength is equivalent to the maximum load that can be carried by one square inch of cross-sectional area when the load is applied as simple tension. Axial Load Capacity is denoted by Pu symbol.

How to evaluate Ultimate Strength for Short, Square Members when Governed by Compression using this online evaluator? To use this online evaluator for Ultimate Strength for Short, Square Members when Governed by Compression, enter Resistance Factor (Φ), Area of Steel Reinforcement (Ast), Yield Strength of Reinforcing Steel (fy), Eccentricity of Column (e), Bar Diameter (Db), Gross Area of Column (Ag), 28-Day Compressive Strength of Concrete (f'c) & Effective Length of Column (L) and hit the calculate button.

FAQs on Ultimate Strength for Short, Square Members when Governed by Compression

What is the formula to find Ultimate Strength for Short, Square Members when Governed by Compression?
The formula of Ultimate Strength for Short, Square Members when Governed by Compression is expressed as Axial Load Capacity = Resistance Factor*((Area of Steel Reinforcement*Yield Strength of Reinforcing Steel/((3*Eccentricity of Column/Bar Diameter)+1))+(Gross Area of Column*28-Day Compressive Strength of Concrete/((12*Effective Length of Column*Eccentricity of Column/((Effective Length of Column+0.67*Bar Diameter)^2))+1.18))). Here is an example- 1321.976 = 0.85*((7E-06*250000000/((3*0.035/0.012)+1))+(3.3E-05*55000000/((12*3*0.035/((3+0.67*0.012)^2))+1.18))).
How to calculate Ultimate Strength for Short, Square Members when Governed by Compression?
With Resistance Factor (Φ), Area of Steel Reinforcement (Ast), Yield Strength of Reinforcing Steel (fy), Eccentricity of Column (e), Bar Diameter (Db), Gross Area of Column (Ag), 28-Day Compressive Strength of Concrete (f'c) & Effective Length of Column (L) we can find Ultimate Strength for Short, Square Members when Governed by Compression using the formula - Axial Load Capacity = Resistance Factor*((Area of Steel Reinforcement*Yield Strength of Reinforcing Steel/((3*Eccentricity of Column/Bar Diameter)+1))+(Gross Area of Column*28-Day Compressive Strength of Concrete/((12*Effective Length of Column*Eccentricity of Column/((Effective Length of Column+0.67*Bar Diameter)^2))+1.18))).
What are the other ways to Calculate Axial Load Capacity?
Here are the different ways to Calculate Axial Load Capacity-
  • Axial Load Capacity=0.85*Width of Compression Face*Effective Length of Column*28-Day Compressive Strength of Concrete*Resistance Factor*((sqrt((((Eccentricity of Column/Effective Length of Column)-0.5)^2)+(0.67*(Bar Diameter/Effective Length of Column)*Area Ratio of Gross Area to Steel Area*Force Ratio of Strengths of Reinforcements)))-((Eccentricity of Column/Effective Length of Column)-0.5))OpenImg
Can the Ultimate Strength for Short, Square Members when Governed by Compression be negative?
No, the Ultimate Strength for Short, Square Members when Governed by Compression, measured in Force cannot be negative.
Which unit is used to measure Ultimate Strength for Short, Square Members when Governed by Compression?
Ultimate Strength for Short, Square Members when Governed by Compression is usually measured using the Newton[N] for Force. Exanewton[N], Meganewton[N], Kilonewton[N] are the few other units in which Ultimate Strength for Short, Square Members when Governed by Compression can be measured.
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