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Depth of Footing given Net Pressure Intensity Formula

GoDepth of Footing given Minor Normal Stress Formula

GoDepth of Footing given Major Normal Stress Formula

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Depth of Footing is the longer dimension of the footing. Check FAQs

D = \frac{q g - q n}{γ}

D - Depth of Footing?q_g - Gross Pressure?q_n - Net Pressure?γ - Unit Weight of Soil?

Depth of Footing given Net Pressure Intensity Example

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With units

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Here is how the Depth of Footing given Net Pressure Intensity equation looks like with Values.

Here is how the Depth of Footing given Net Pressure Intensity equation looks like with Units.

Here is how the Depth of Footing given Net Pressure Intensity equation looks like.

2.55 = \frac{60.9 - 15}{18}

2.55m = \frac{60.9kN/m² - 15kN/m²}{18kN/m³}

2.55 = \frac{60.9 - 15}{18}

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Depth of Footing given Net Pressure Intensity Solution

Follow our step by step solution on how to calculate Depth of Footing given Net Pressure Intensity?

FIRST Step Consider the formula

D = \frac{q g - q n}{γ}

Next Step Substitute values of Variables

∴

D = \frac{60.9kN/m² - 15kN/m²}{18kN/m³}

Next Step Convert Units

∴

D = \frac{60900Pa - 15000Pa}{18000N/m³}

Next Step Prepare to Evaluate

∴

D = \frac{60900 - 15000}{18000}

LAST Step Evaluate

∴

D = 2.55m

Depth of Footing given Net Pressure Intensity Formula Elements

Variables

Depth of Footing

Depth of Footing is the longer dimension of the footing.

Symbol: D

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Depth of Footing

Gross Pressure

Gross Pressure is the total pressure at the base of the footing due to the weight of the superstructure and earth fill if any.

Symbol: q_g

Measurement: PressureUnit: kN/m²

Note: Value should be greater than 0.

Formulas to find Gross Pressure

Net Pressure

Net Pressure is defined as the excess pressure.

Symbol: q_n

Measurement: PressureUnit: kN/m²

Note: Value should be greater than 0.

Formulas to find Net Pressure

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 Soil

Other Formulas to find Depth of Footing

Go Depth of Footing given Minor Normal Stress

D = \frac{σ min}{γ}

Go Depth of Footing given Major Normal Stress

D = \frac{σ major}{γ \cdot {(\tan (i))}^{2}}

Go Depth of Footing given Angle of Inclination from Horizontal

D = \frac{q f}{γ \cdot {(\tan (\frac{i \cdot π}{180}))}^{4}}

Other formulas in Minimum Depth of Foundation by Rankine's Analysis category

Go Major Stress during Shear Failure by Rankine Analysis

σ major = σ min \cdot {(\tan (\frac{i \cdot 180}{π}))}^{2} + (2 \cdot C s \cdot \tan (\frac{i \cdot 180}{π}))

Go Minor Normal Stress during Shear Failure by Rankine Analysis

σ min = \frac{σ major - (2 \cdot C s \cdot \tan ((i)))}{{(\tan ((i)))}^{2}}

Go Minor Normal Stress given Unit Weight of Soil

σ min = γ \cdot D

Go Unit Weight of Soil given Minor Normal Stress

γ = \frac{σ min}{D}

How to Evaluate Depth of Footing given Net Pressure Intensity?

Depth of Footing given Net Pressure Intensity evaluator uses Depth of Footing = (Gross Pressure-Net Pressure)/Unit Weight of Soil to evaluate the Depth of Footing, The Depth of Footing given Net Pressure Intensity is defined as the value of depth of footing when we have prior information of other parameters used. Depth of Footing is denoted by D symbol.

How to evaluate Depth of Footing given Net Pressure Intensity using this online evaluator? To use this online evaluator for Depth of Footing given Net Pressure Intensity, enter Gross Pressure (q_g), Net Pressure (q_n) & Unit Weight of Soil (γ) and hit the calculate button.

FAQs on Depth of Footing given Net Pressure Intensity

What is the formula to find Depth of Footing given Net Pressure Intensity?

The formula of Depth of Footing given Net Pressure Intensity is expressed as Depth of Footing = (Gross Pressure-Net Pressure)/Unit Weight of Soil. Here is an example- 1.111111 = (60900-15000)/18000.

How to calculate Depth of Footing given Net Pressure Intensity?

With Gross Pressure (q_g), Net Pressure (q_n) & Unit Weight of Soil (γ) we can find Depth of Footing given Net Pressure Intensity using the formula - Depth of Footing = (Gross Pressure-Net Pressure)/Unit Weight of Soil.

What are the other ways to Calculate Depth of Footing?

Here are the different ways to Calculate Depth of Footing-

Depth of Footing=Minor Principal Stress in Soil/Unit Weight of Soil
Depth of Footing=Major Principal Stress in Soil/(Unit Weight of Soil*(tan(Angle of Inclination to Horizontal in Soil))^2)
Depth of Footing=Ultimate Bearing Capacity in Soil/(Unit Weight of Soil*(tan((Angle of Inclination to Horizontal in Soil*pi)/180))^4)

Can the Depth of Footing given Net Pressure Intensity be negative?

No, the Depth of Footing given Net Pressure Intensity, measured in Length cannot be negative.

Which unit is used to measure Depth of Footing given Net Pressure Intensity?

Depth of Footing given Net Pressure Intensity is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Depth of Footing given Net Pressure Intensity can be measured.

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Depth of Footing given Net Pressure Intensity Formula

​GoDepth of Footing given Minor Normal Stress Formula

​GoDepth of Footing given Major Normal Stress Formula

Depth of Footing given Net Pressure Intensity Example

Depth of Footing given Net Pressure Intensity Solution

Depth of Footing given Net Pressure Intensity Formula Elements

Other Formulas to find Depth of Footing

Other formulas in Minimum Depth of Foundation by Rankine's Analysis category

How to Evaluate Depth of Footing given Net Pressure Intensity?

FAQs on Depth of Footing given Net Pressure Intensity

Variable Name

GoDepth of Footing given Minor Normal Stress Formula

GoDepth of Footing given Major Normal Stress Formula