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Bearing Capacity for Round Footing Formula

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Bearing Capacity for Round Footing is the maximum load per unit area that the soil can support without experiencing shear failure subjected to the loads applied by a round footing. Check FAQs
qround=(1.3⋅C⋅Nc)+(σ'⋅Nq)+(0.5⋅γ⋅B⋅Nγ⋅0.6)
qround - Bearing Capacity for Round Footing?C - Cohesion?Nc - Bearing Capacity Factor dependent on Cohesion?σ' - Effective Surcharge?Nq - Bearing Capacity Factor dependent on Surcharge?γ - Unit Weight of Soil?B - Width of Footing?Nγ - Bearing Capacity Factor dependent on Unit Weight?

Bearing Capacity for Round Footing Example

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With units
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Here is how the Bearing Capacity for Round Footing equation looks like with Values.

Here is how the Bearing Capacity for Round Footing equation looks like with Units.

Here is how the Bearing Capacity for Round Footing equation looks like.

27.9132Edit=(1.3⋅4.23Edit⋅1.93Edit)+(10Edit⋅2.01Edit)+(0.5⋅18Edit⋅2Edit⋅1.6Edit⋅0.6)
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Bearing Capacity for Round Footing Solution

Follow our step by step solution on how to calculate Bearing Capacity for Round Footing?

FIRST Step Consider the formula
qround=(1.3⋅C⋅Nc)+(σ'⋅Nq)+(0.5⋅γ⋅B⋅Nγ⋅0.6)
Next Step Substitute values of Variables
∴ qround=(1.3⋅4.23kPa⋅1.93)+(10Pa⋅2.01)+(0.5⋅18kN/m³⋅2m⋅1.6⋅0.6)
Next Step Convert Units
∴ qround=(1.3⋅4230Pa⋅1.93)+(10Pa⋅2.01)+(0.5⋅18000N/m³⋅2m⋅1.6⋅0.6)
Next Step Prepare to Evaluate
∴ qround=(1.3⋅4230⋅1.93)+(10⋅2.01)+(0.5⋅18000⋅2⋅1.6⋅0.6)
Next Step Evaluate
∴qround=27913.17Pa
Next Step Convert to Output's Unit
∴qround=27.91317kPa
LAST Step Rounding Answer
∴qround=27.9132kPa

Bearing Capacity for Round Footing Formula Elements

Variables
Bearing Capacity for Round Footing
Bearing Capacity for Round Footing is the maximum load per unit area that the soil can support without experiencing shear failure subjected to the loads applied by a round footing.
Symbol: qround
Measurement: PressureUnit: kPa
Note: Value should be greater than 0.
Formulas to find Bearing Capacity for Round FootingOpen Variable
Cohesion
Cohesion 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: C
Measurement: PressureUnit: kPa
Note: Value should be between 0 to 50.
Formulas to find CohesionOpen 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
Effective Surcharge 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: σ'
Measurement: PressureUnit: Pa
Note: Value should be greater than 0.
Formulas to find Effective SurchargeOpen 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 in Specialization of Terzaghi's Equations category

​Go Bearing Capacity depending on Shape Factors
qs=(sc⋅C⋅Nc)+(σs⋅Nq)+(0.5⋅γ⋅B⋅Nγ⋅sγ)
​Go Cohesion of Soil depending on Shape Factors
C=qf-((σ'⋅Nq)+(0.5⋅γ⋅B⋅Nγ⋅sγ))sc⋅Nc

How to Evaluate Bearing Capacity for Round Footing?

Bearing Capacity for Round Footing evaluator uses Bearing Capacity for Round Footing = (1.3*Cohesion*Bearing Capacity Factor dependent on Cohesion)+(Effective Surcharge*Bearing Capacity Factor dependent on Surcharge)+(0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight*0.6) to evaluate the Bearing Capacity for Round Footing, The Bearing Capacity for Round Footing formula is defined as the value of the maximum load per unit area that a foundation soil can support without experiencing shear failure for round footing. Bearing Capacity for Round Footing is denoted by qround symbol.

How to evaluate Bearing Capacity for Round Footing using this online evaluator? To use this online evaluator for Bearing Capacity for Round Footing, enter Cohesion (C), Bearing Capacity Factor dependent on Cohesion (Nc), Effective Surcharge (σ'), 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 Bearing Capacity for Round Footing

What is the formula to find Bearing Capacity for Round Footing?
The formula of Bearing Capacity for Round Footing is expressed as Bearing Capacity for Round Footing = (1.3*Cohesion*Bearing Capacity Factor dependent on Cohesion)+(Effective Surcharge*Bearing Capacity Factor dependent on Surcharge)+(0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight*0.6). Here is an example- 0.027913 = (1.3*4230*1.93)+(10*2.01)+(0.5*18000*2*1.6*0.6).
How to calculate Bearing Capacity for Round Footing?
With Cohesion (C), Bearing Capacity Factor dependent on Cohesion (Nc), Effective Surcharge (σ'), 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 Bearing Capacity for Round Footing using the formula - Bearing Capacity for Round Footing = (1.3*Cohesion*Bearing Capacity Factor dependent on Cohesion)+(Effective Surcharge*Bearing Capacity Factor dependent on Surcharge)+(0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight*0.6).
Can the Bearing Capacity for Round Footing be negative?
No, the Bearing Capacity for Round Footing, measured in Pressure cannot be negative.
Which unit is used to measure Bearing Capacity for Round Footing?
Bearing Capacity for Round Footing is usually measured using the Kilopascal[kPa] for Pressure. Pascal[kPa], Bar[kPa], Pound Per Square Inch[kPa] are the few other units in which Bearing Capacity for Round Footing can be measured.
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