Ultimate Bearing Capacity for Rectangular Footing Solution

STEP 0: Pre-Calculation Summary
Formula Used
Ultimate Bearing Capacity in Soil = ((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+(0.4*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)
qfc = ((C*Nc)*(1+0.3*(B/L)))+(σs*Nq)+(0.4*γ*B*Nγ)
This formula uses 9 Variables
Variables Used
Ultimate Bearing Capacity in Soil - (Measured in Pascal) - Ultimate Bearing Capacity in Soil is defined as the minimum gross pressure intensity at the base of the foundation at which the soil fails in shear.
Cohesion in Soil as Kilopascal - (Measured in Pascal) - Cohesion in Soil as Kilopascal 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.
Bearing Capacity Factor dependent on Cohesion - Bearing Capacity Factor dependent on Cohesion is a constant whose value depends upon the cohesion of soil.
Width of Footing - (Measured in Meter) - Width of Footing is the shorter dimension of the footing.
Length of Footing - (Measured in Meter) - Length of Footing is the length of the larger dimension of the footing.
Effective Surcharge in KiloPascal - (Measured in Pascal) - 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.
Bearing Capacity Factor dependent on Surcharge - Bearing Capacity Factor dependent on Surcharge is a constant whose value depends upon surcharge.
Unit Weight of Soil - (Measured in Newton per Cubic Meter) - Unit Weight of Soil mass is the ratio of the total weight of soil to the total volume of soil.
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.
STEP 1: Convert Input(s) to Base Unit
Cohesion in Soil as Kilopascal: 1.27 Kilopascal --> 1270 Pascal (Check conversion here)
Bearing Capacity Factor dependent on Cohesion: 9 --> No Conversion Required
Width of Footing: 2 Meter --> 2 Meter No Conversion Required
Length of Footing: 4 Meter --> 4 Meter No Conversion Required
Effective Surcharge in KiloPascal: 45.9 Kilonewton per Square Meter --> 45900 Pascal (Check conversion here)
Bearing Capacity Factor dependent on Surcharge: 2.01 --> No Conversion Required
Unit Weight of Soil: 18 Kilonewton per Cubic Meter --> 18000 Newton per Cubic Meter (Check conversion here)
Bearing Capacity Factor dependent on Unit Weight: 1.6 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
qfc = ((C*Nc)*(1+0.3*(B/L)))+(σs*Nq)+(0.4*γ*B*Nγ) --> ((1270*9)*(1+0.3*(2/4)))+(45900*2.01)+(0.4*18000*2*1.6)
Evaluating ... ...
qfc = 128443.5
STEP 3: Convert Result to Output's Unit
128443.5 Pascal -->128.4435 Kilopascal (Check conversion here)
FINAL ANSWER
128.4435 Kilopascal <-- Ultimate Bearing Capacity in Soil
(Calculation completed in 00.004 seconds)

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15 Frictional Cohesive Soil Calculators

Bearing Capacity Factor Dependent on Surcharge for Rectangular Footing given Shape Factor
Go Bearing Capacity Factor dependent on Surcharge = (Ultimate Bearing Capacity in Soil-(((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+((0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)*(1-0.2*(Width of Footing/Length of Footing)))))/ Effective Surcharge in KiloPascal
Bearing Capacity Factor Dependent on Cohesion for Rectangular Footing given Shape Factor
Go Bearing Capacity Factor dependent on Cohesion = (Ultimate Bearing Capacity in Soil-((Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+((0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)*(1-0.2*(Width of Footing/Length of Footing)))))/((Cohesion in Soil as Kilopascal)*(1+0.3*(Width of Footing/Length of Footing)))
Bearing Capacity Factor Dependent on Weight for Rectangular Footing given Shape Factor
Go Bearing Capacity Factor dependent on Unit Weight = (Ultimate Bearing Capacity in Soil-(((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)))/((0.5*Width of Footing*Unit Weight of Soil)*(1-0.2*(Width of Footing/Length of Footing)))
Effective Surcharge for Rectangular Footing given Shape Factor
Go Effective Surcharge in KiloPascal = (Ultimate Bearing Capacity in Soil-(((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+((0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)*(1-0.2*(Width of Footing/Length of Footing)))))/ Bearing Capacity Factor dependent on Surcharge
Unit Weight of Soil for Rectangular Footing given Shape Factor
Go Unit Weight of Soil = (Ultimate Bearing Capacity in Soil-(((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)))/((0.5*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)*(1-0.2*(Width of Footing/Length of Footing)))
Cohesion of Soil for Rectangular Footing given Shape Factor
Go Cohesion in Soil as Kilopascal = (Ultimate Bearing Capacity in Soil-((Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+((0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)*(1-0.2*(Width of Footing/Length of Footing)))))/((Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))
Ultimate Bearing Capacity for Rectangular Footing given Shape Factor
Go Ultimate Bearing Capacity in Soil = ((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+((0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)*(1-0.2*(Width of Footing/Length of Footing)))
Unit Weight of Soil given Ultimate Bearing Capacity for Rectangular Footing
Go Unit Weight of Soil = (Ultimate Bearing Capacity in Soil-(((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)))/(0.4*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)
Cohesion of Soil given Ultimate Bearing Capacity for Rectangular Footing
Go Cohesion in Soil as Kilopascal = (Ultimate Bearing Capacity in Soil-((Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+(0.4*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)))/((Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))
Bearing Capacity Factor Dependent on Unit Weight for Rectangular Footing
Go Bearing Capacity Factor dependent on Unit Weight = (Ultimate Bearing Capacity in Soil-(((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)))/(0.4*Width of Footing*Unit Weight of Soil)
Bearing Capacity Factor Dependent on Surcharge for Rectangular Footing
Go Bearing Capacity Factor dependent on Surcharge = (Ultimate Bearing Capacity in Soil-(((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(0.4*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)))/ Effective Surcharge in KiloPascal
Bearing Capacity Factor Dependent on Cohesion for Rectangular Footing
Go Bearing Capacity Factor dependent on Cohesion = (Ultimate Bearing Capacity in Soil-((Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+(0.4*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)))/((Cohesion in Soil as Kilopascal)*(1+0.3*(Width of Footing/Length of Footing)))
Length of Rectangular Footing given Ultimate Bearing Capacity
Go Length of Footing = (0.3*Width of Footing)/(((Ultimate Bearing Capacity in Soil-((Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+(0.4*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)))/(Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion))-1)
Effective Surcharge for Rectangular Footing
Go Effective Surcharge in KiloPascal = (Ultimate Bearing Capacity in Soil-(((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(0.4*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)))/ Bearing Capacity Factor dependent on Surcharge
Ultimate Bearing Capacity for Rectangular Footing
Go Ultimate Bearing Capacity in Soil = ((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+(0.4*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)

Ultimate Bearing Capacity for Rectangular Footing Formula

Ultimate Bearing Capacity in Soil = ((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+(0.4*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)
qfc = ((C*Nc)*(1+0.3*(B/L)))+(σs*Nq)+(0.4*γ*B*Nγ)

What is Footing?

Footings are an important part of foundation construction. They are typically made of concrete with rebar reinforcement that has been poured into an excavated trench. The purpose of footings is to support the foundation and prevent settling. Footings are especially important in areas with troublesome soils.

How to Calculate Ultimate Bearing Capacity for Rectangular Footing?

Ultimate Bearing Capacity for Rectangular Footing calculator uses Ultimate Bearing Capacity in Soil = ((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+(0.4*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight) to calculate the Ultimate Bearing Capacity in Soil, The Ultimate Bearing Capacity for Rectangular Footing is defined as the value of bearing capacity for rectangular footing when we have prior information of other parameters used. Ultimate Bearing Capacity in Soil is denoted by qfc symbol.

How to calculate Ultimate Bearing Capacity for Rectangular Footing using this online calculator? To use this online calculator for Ultimate Bearing Capacity for Rectangular Footing, enter Cohesion in Soil as Kilopascal (C), Bearing Capacity Factor dependent on Cohesion (Nc), Width of Footing (B), Length of Footing (L), Effective Surcharge in KiloPascal s), Bearing Capacity Factor dependent on Surcharge (Nq), Unit Weight of Soil (γ) & Bearing Capacity Factor dependent on Unit Weight (Nγ) and hit the calculate button. Here is how the Ultimate Bearing Capacity for Rectangular Footing calculation can be explained with given input values -> 0.127984 = ((1270*9)*(1+0.3*(2/4)))+(45900*2.01)+(0.4*18000*2*1.6).

FAQ

What is Ultimate Bearing Capacity for Rectangular Footing?
The Ultimate Bearing Capacity for Rectangular Footing is defined as the value of bearing capacity for rectangular footing when we have prior information of other parameters used and is represented as qfc = ((C*Nc)*(1+0.3*(B/L)))+(σs*Nq)+(0.4*γ*B*Nγ) or Ultimate Bearing Capacity in Soil = ((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+(0.4*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight). Cohesion in Soil as Kilopascal 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, Bearing Capacity Factor dependent on Cohesion is a constant whose value depends upon the cohesion of soil, Width of Footing is the shorter dimension of the footing, Length of Footing is the length of the larger dimension of the footing, 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, Bearing Capacity Factor dependent on Surcharge is a constant whose value depends upon surcharge, Unit Weight of Soil mass is the ratio of the total weight of soil to the total volume of soil & Bearing Capacity Factor dependent on Unit Weight is a constant whose value depends upon unit weight of soil.
How to calculate Ultimate Bearing Capacity for Rectangular Footing?
The Ultimate Bearing Capacity for Rectangular Footing is defined as the value of bearing capacity for rectangular footing when we have prior information of other parameters used is calculated using Ultimate Bearing Capacity in Soil = ((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+(0.4*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight). To calculate Ultimate Bearing Capacity for Rectangular Footing, you need Cohesion in Soil as Kilopascal (C), Bearing Capacity Factor dependent on Cohesion (Nc), Width of Footing (B), Length of Footing (L), Effective Surcharge in KiloPascal s), Bearing Capacity Factor dependent on Surcharge (Nq), Unit Weight of Soil (γ) & Bearing Capacity Factor dependent on Unit Weight (Nγ). With our tool, you need to enter the respective value for Cohesion in Soil as Kilopascal, Bearing Capacity Factor dependent on Cohesion, Width of Footing, Length of Footing, Effective Surcharge in KiloPascal, Bearing Capacity Factor dependent on Surcharge, Unit Weight of Soil & Bearing Capacity Factor dependent on Unit Weight 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 Ultimate Bearing Capacity in Soil?
In this formula, Ultimate Bearing Capacity in Soil uses Cohesion in Soil as Kilopascal, Bearing Capacity Factor dependent on Cohesion, Width of Footing, Length of Footing, Effective Surcharge in KiloPascal, Bearing Capacity Factor dependent on Surcharge, Unit Weight of Soil & Bearing Capacity Factor dependent on Unit Weight. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Ultimate Bearing Capacity in Soil = ((Cohesion in Soil as Kilopascal*Bearing Capacity Factor dependent on Cohesion)*(1+0.3*(Width of Footing/Length of Footing)))+(Effective Surcharge in KiloPascal*Bearing Capacity Factor dependent on Surcharge)+((0.5*Unit Weight of Soil*Width of Footing*Bearing Capacity Factor dependent on Unit Weight)*(1-0.2*(Width of Footing/Length of Footing)))
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