Alithea Fernandes
Don Bosco College of Engineering (DBCE), Goa
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Kethavath Srinath
Osmania University (OU), Hyderabad
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8 Other formulas that you can solve using the same Inputs

Allowable Load when Safety Factors are Given
Allowable Load=(Shaft Resistance/Factor of Safety F1)+(Toe Resistance/Factor of Safety F2) GO
Shaft Resistance when Allowable Load and Safety Factor is Given
Shaft Resistance=Factor of Safety*Allowable Load-Toe Resistance GO
Toe Resistance when Allowable Load and Safety Factor is Given
Toe Resistance=Allowable Load*Factor of Safety-Shaft Resistance GO
Nominal Strength if Allowable Design Strength is Given
Nominal strength=Factor of Safety*Allowable design strength GO
Allowable Design Strength
Allowable design strength=Nominal strength/Factor of Safety GO
Permissible stress if factor of safety is known
Permissible stress=Ultimate stress/Factor of Safety GO
Ultimate stress if factor of safety is known
Ultimate stress=Factor of Safety*Permissible stress GO
Pile Capacity
Pile Capacity=Shaft Resistance+Toe Resistance GO

3 Other formulas that calculate the same Output

Allowable Unit Load for Bridges using Structural Carbon Steel
Allowable Load=(Yield Strength*Cross sectional area/Factor of safety)/(1+0.25*sec((0.375*pi/180)/Least Radius of Gyration*Length of column*sqrt(Factor of safety*Allowable Load/Modulus Of Elasticity*Cross sectional area))) GO
Total Allowable Axial Load for Short Columns
Allowable Load=Gross area of column*(0.25*Compressive strength+Allowable stress in vertical reinforcement*Area ratio of cross sectional area to gross area) GO
Allowable Load when Safety Factors are Given
Allowable Load=(Shaft Resistance/Factor of Safety F1)+(Toe Resistance/Factor of Safety F2) GO

Allowable Load when Safety Factor is Given Formula

Allowable Load=(Shaft Resistance+Toe Resistance)/Factor of Safety
Q <sub>a</sub>=(Q <sub>su</sub>+Q <sub>bu</sub>)/F
More formulas
Allowable Load when Safety Factors are Given GO
Pile Capacity GO
Shaft Resistance when Allowable Load and Safety Factor is Given GO
Toe Resistance when Allowable Load and Safety Factor is Given GO

What is Factor of Safety?

In engineering, a factor of safety (FoS), also known as (and used interchangeably with) safety factor (SF), expresses how much stronger a system is than it needs to be for an intended load. Safety factors are often calculated using detailed analysis because comprehensive testing is impractical on many projects, such as bridges and buildings, but the structure's ability to carry a load must be determined to a reasonable accuracy.

How to Calculate Allowable Load when Safety Factor is Given?

Allowable Load when Safety Factor is Given calculator uses Allowable Load=(Shaft Resistance+Toe Resistance)/Factor of Safety to calculate the Allowable Load, The Allowable Load when Safety Factor is Given formula is defined as the maximum working load that can be applied on the pile. Allowable Load and is denoted by Q a symbol.

How to calculate Allowable Load when Safety Factor is Given using this online calculator? To use this online calculator for Allowable Load when Safety Factor is Given, enter Shaft Resistance (Q su), Toe Resistance (Q bu) and Factor of Safety (F) and hit the calculate button. Here is how the Allowable Load when Safety Factor is Given calculation can be explained with given input values -> 20 = (10000+10000)/1.

FAQ

What is Allowable Load when Safety Factor is Given?
The Allowable Load when Safety Factor is Given formula is defined as the maximum working load that can be applied on the pile and is represented as Q a=(Q su+Q bu)/F or Allowable Load=(Shaft Resistance+Toe Resistance)/Factor of Safety. Shaft Resistance is the load resisted by a pile's shaft, Toe Resistance is the load resisted by the toe of a pile and Factor of Safety expresses how much stronger a system is than it needs to be for an intended load.
How to calculate Allowable Load when Safety Factor is Given?
The Allowable Load when Safety Factor is Given formula is defined as the maximum working load that can be applied on the pile is calculated using Allowable Load=(Shaft Resistance+Toe Resistance)/Factor of Safety. To calculate Allowable Load when Safety Factor is Given, you need Shaft Resistance (Q su), Toe Resistance (Q bu) and Factor of Safety (F). With our tool, you need to enter the respective value for Shaft Resistance, Toe Resistance and Factor of Safety 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 Allowable Load?
In this formula, Allowable Load uses Shaft Resistance, Toe Resistance and Factor of Safety. We can use 3 other way(s) to calculate the same, which is/are as follows -
  • Allowable Load=(Shaft Resistance/Factor of Safety F1)+(Toe Resistance/Factor of Safety F2)
  • Allowable Load=Gross area of column*(0.25*Compressive strength+Allowable stress in vertical reinforcement*Area ratio of cross sectional area to gross area)
  • Allowable Load=(Yield Strength*Cross sectional area/Factor of safety)/(1+0.25*sec((0.375*pi/180)/Least Radius of Gyration*Length of column*sqrt(Factor of safety*Allowable Load/Modulus Of Elasticity*Cross sectional area)))
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