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Net Ultimate Bearing Capacity is the minimum net pressure intensity causing shear failure. Check FAQs
qnf=(Cs⋅Nc)+(σs⋅(Nq-1))+(0.5⋅γ⋅B⋅Nγ)
qnf - Net Ultimate Bearing Capacity?Cs - Cohesion of Soil?Nc - Bearing Capacity Factor dependent on Cohesion?σs - Effective Surcharge in KiloPascal?Nq - Bearing Capacity Factor dependent on Surcharge?γ - Unit Weight of Soil?B - Width of Footing?Nγ - Bearing Capacity Factor dependent on Unit Weight?

Net Ultimate Bearing Capacity given Bearing Capacity Factor Example

With values
With units
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Here is how the Net Ultimate Bearing Capacity given Bearing Capacity Factor equation looks like with Values.

Here is how the Net Ultimate Bearing Capacity given Bearing Capacity Factor equation looks like with Units.

Here is how the Net Ultimate Bearing Capacity given Bearing Capacity Factor equation looks like.

120.159Edit=(5Edit⋅9Edit)+(45.9Edit⋅(2.01Edit-1))+(0.5⋅18Edit⋅2Edit⋅1.6Edit)
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Net Ultimate Bearing Capacity given Bearing Capacity Factor Solution

Follow our step by step solution on how to calculate Net Ultimate Bearing Capacity given Bearing Capacity Factor?

FIRST Step Consider the formula
qnf=(Cs⋅Nc)+(σs⋅(Nq-1))+(0.5⋅γ⋅B⋅Nγ)
Next Step Substitute values of Variables
∴ qnf=(5kPa⋅9)+(45.9kN/m²⋅(2.01-1))+(0.5⋅18kN/m³⋅2m⋅1.6)
Next Step Convert Units
∴ qnf=(5000Pa⋅9)+(45900Pa⋅(2.01-1))+(0.5⋅18000N/m³⋅2m⋅1.6)
Next Step Prepare to Evaluate
∴ qnf=(5000⋅9)+(45900⋅(2.01-1))+(0.5⋅18000⋅2⋅1.6)
Next Step Evaluate
∴qnf=120159Pa
LAST Step Convert to Output's Unit
∴qnf=120.159kN/m²

Net Ultimate Bearing Capacity given Bearing Capacity Factor Formula Elements

Variables
Net Ultimate Bearing Capacity
Net Ultimate Bearing Capacity is the minimum net pressure intensity causing shear failure.
Symbol: qnf
Measurement: PressureUnit: kN/m²
Note: Value should be greater than 0.
Formulas to find Net Ultimate Bearing CapacityOpen Variable
Cohesion of Soil
Cohesion of Soil is the ability of like particles within soil to hold onto each other. It is the shear strength or force that binds together like particles in the structure of a soil.
Symbol: Cs
Measurement: PressureUnit: kPa
Note: Value should be greater than 0.
Formulas to find Cohesion of SoilOpen Variable
Bearing Capacity Factor dependent on Cohesion
Bearing Capacity Factor dependent on Cohesion is a constant whose value depends upon the cohesion of soil.
Symbol: Nc
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Formulas to find Bearing Capacity Factor dependent on CohesionOpen Variable
Effective Surcharge in KiloPascal
Effective Surcharge in KiloPascal also called as surcharge load refers to the vertical pressure or any load that acts over the ground surface additional to basic earth pressure.
Symbol: σs
Measurement: PressureUnit: kN/m²
Note: Value should be greater than 0.
Formulas to find Effective Surcharge in KiloPascalOpen Variable
Bearing Capacity Factor dependent on Surcharge
Bearing Capacity Factor dependent on Surcharge is a constant whose value depends upon surcharge.
Symbol: Nq
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Formulas to find Bearing Capacity Factor dependent on SurchargeOpen Variable
Unit Weight of Soil
Unit Weight of Soil mass is the ratio of the total weight of soil to the total volume of soil.
Symbol: γ
Measurement: Specific WeightUnit: kN/m³
Note: Value should be greater than 0.
Formulas to find Unit Weight of SoilOpen Variable
Width of Footing
Width of Footing is the shorter dimension of the footing.
Symbol: B
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Formulas to find Width of FootingOpen Variable
Bearing Capacity Factor dependent on Unit Weight
Bearing Capacity Factor dependent on Unit Weight is a constant whose value depends upon unit weight of soil.
Symbol: Nγ
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Formulas to find Bearing Capacity Factor dependent on Unit WeightOpen Variable

Other Formulas to find Net Ultimate Bearing Capacity

​Go Net Ultimate Bearing Capacity given Depth and Width of Footing
qnf=((Cs⋅Nc)+((γ⋅D)⋅(Nq-1))+(0.5⋅γ⋅B⋅Nγ))

Other formulas in Terzaghi's Analysis in Water Table is Below the Base of Footing category

​Go Ultimate Bearing Capacity given Bearing Capacity Factor
qf=(Cs⋅Nc)+(γ⋅D⋅Nq)+(0.5⋅γ⋅B⋅Nγ)
​Go Cohesion of Soil given Depth and Width of Footing
C=qfc-((γ⋅Dfooting⋅Nq)+(0.5⋅γ⋅B⋅Nγ))Nc

How to Evaluate Net Ultimate Bearing Capacity given Bearing Capacity Factor?

Net Ultimate Bearing Capacity given Bearing Capacity Factor evaluator uses Net Ultimate Bearing Capacity = (Cohesion of Soil*Bearing Capacity Factor dependent on Cohesion)+(Effective Surcharge in KiloPascal*(Bearing Capacity Factor dependent on Surcharge-1))+(0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight) to evaluate the Net Ultimate Bearing Capacity, The Net Ultimate Bearing Capacity given Bearing Capacity Factor is defined as the maximum load it can support, determined by the bearing capacity factor. Net Ultimate Bearing Capacity is denoted by qnf symbol.

How to evaluate Net Ultimate Bearing Capacity given Bearing Capacity Factor using this online evaluator? To use this online evaluator for Net Ultimate Bearing Capacity given Bearing Capacity Factor, enter Cohesion of Soil (Cs), Bearing Capacity Factor dependent on Cohesion (Nc), Effective Surcharge in KiloPascal (σs), Bearing Capacity Factor dependent on Surcharge (Nq), Unit Weight of Soil (γ), Width of Footing (B) & Bearing Capacity Factor dependent on Unit Weight (Nγ) and hit the calculate button.

FAQs on Net Ultimate Bearing Capacity given Bearing Capacity Factor

What is the formula to find Net Ultimate Bearing Capacity given Bearing Capacity Factor?
The formula of Net Ultimate Bearing Capacity given Bearing Capacity Factor is expressed as Net Ultimate Bearing Capacity = (Cohesion of Soil*Bearing Capacity Factor dependent on Cohesion)+(Effective Surcharge in KiloPascal*(Bearing Capacity Factor dependent on Surcharge-1))+(0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight). Here is an example- 0.1197 = (5000*9)+(45900*(2.01-1))+(0.5*18000*2*1.6).
How to calculate Net Ultimate Bearing Capacity given Bearing Capacity Factor?
With Cohesion of Soil (Cs), Bearing Capacity Factor dependent on Cohesion (Nc), Effective Surcharge in KiloPascal (σs), Bearing Capacity Factor dependent on Surcharge (Nq), Unit Weight of Soil (γ), Width of Footing (B) & Bearing Capacity Factor dependent on Unit Weight (Nγ) we can find Net Ultimate Bearing Capacity given Bearing Capacity Factor using the formula - Net Ultimate Bearing Capacity = (Cohesion of Soil*Bearing Capacity Factor dependent on Cohesion)+(Effective Surcharge in KiloPascal*(Bearing Capacity Factor dependent on Surcharge-1))+(0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight).
What are the other ways to Calculate Net Ultimate Bearing Capacity?
Here are the different ways to Calculate Net Ultimate Bearing Capacity-
  • Net Ultimate Bearing Capacity=((Cohesion of Soil*Bearing Capacity Factor dependent on Cohesion)+((Unit Weight of Soil*Depth of Footing)*(Bearing Capacity Factor dependent on Surcharge-1))+(0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight))OpenImg
Can the Net Ultimate Bearing Capacity given Bearing Capacity Factor be negative?
No, the Net Ultimate Bearing Capacity given Bearing Capacity Factor, measured in Pressure cannot be negative.
Which unit is used to measure Net Ultimate Bearing Capacity given Bearing Capacity Factor?
Net Ultimate Bearing Capacity given Bearing Capacity Factor is usually measured using the Kilonewton per Square Meter[kN/m²] for Pressure. Pascal[kN/m²], Kilopascal[kN/m²], Bar[kN/m²] are the few other units in which Net Ultimate Bearing Capacity given Bearing Capacity Factor can be measured.
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