Net Pressure Intensity Calculator

✖Gross Pressure is the total pressure at the base of the footing due to the weight of the superstructure and earth fill if any.ⓘ Gross Pressure [q_g]			+10% -10%
✖Effective Surcharge in Kilo Pascal also called as surcharge load refers to the vertical pressure or any load that acts over the ground surface additional to basic earth pressure.ⓘ Effective Surcharge in Kilo Pascal [σ_s]			+10% -10%

✖Net Pressure is the pressure exerted by the overlying soil or rock mass, minus the pore water pressure within the groundwater system.ⓘ Net Pressure Intensity [q_n]

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Net Pressure Intensity Solution

STEP 0: Pre-Calculation Summary

Formula Used

Net Pressure = Gross Pressure-Effective Surcharge in Kilo Pascal
q_n = q_g-σ_s
This formula uses 3 Variables

Variables Used

Net Pressure - (Measured in Pascal) - Net Pressure is the pressure exerted by the overlying soil or rock mass, minus the pore water pressure within the groundwater system.
Gross Pressure - (Measured in Pascal) - Gross Pressure is the total pressure at the base of the footing due to the weight of the superstructure and earth fill if any.
Effective Surcharge in Kilo Pascal - (Measured in Pascal) - Effective Surcharge in Kilo Pascal also called as surcharge load refers to the vertical pressure or any load that acts over the ground surface additional to basic earth pressure.

STEP 1: Convert Input(s) to Base Unit

Gross Pressure: 60.9 Kilonewton per Square Meter --> 60900 Pascal (Check conversion here)
Effective Surcharge in Kilo Pascal: 0.45 Kilonewton per Square Meter --> 450 Pascal (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

q_n = q_g-σ_s --> 60900-450

Evaluating ... ...

q_n = 60450

STEP 3: Convert Result to Output's Unit

60450 Pascal -->60.45 Kilonewton per Square Meter (Check conversion here)

FINAL ANSWER

60.45 Kilonewton per Square Meter <-- Net Pressure

(Calculation completed in 00.020 seconds)

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Credits

Created by Suraj Kumar

Birsa Institute of Technology (BIT), Sindri

Suraj Kumar has created this Calculator and 2100+ more calculators!

Verified by Ishita Goyal

Meerut Institute of Engineering and Technology (MIET), Meerut

Ishita Goyal has verified this Calculator and 2600+ more calculators!

< Bearing Capacity of Soils Calculators

Ultimate Bearing Capacity of Soil under Long Footing at Surface of Soil

LaTeX Go Ultimate Bearing Capacity = ((Prandtls Cohesion/tan(Angle of Internal Friction of Soil))+(0.5*Dry Unit Weight of Soil*Width of Footing*sqrt(Coefficient of Passive Pressure))*(Coefficient of Passive Pressure*exp(pi*tan(Angle of Internal Friction of Soil))-1))

Net Ultimate Bearing Capacity given Ultimate Bearing Capacity

LaTeX Go Net Ultimate Bearing Capacity of Soil = Ultimate Bearing Capacity-Effective Surcharge in Kilo Pascal

Ultimate Bearing Capacity

LaTeX Go Ultimate Bearing Capacity = Net Ultimate Bearing Capacity of Soil+Effective Surcharge in Kilo Pascal

Effective Surcharge given Depth of Footing

LaTeX Go Effective Surcharge in Kilo Pascal = Unit Weight of Soil*Depth of Footing

Net Pressure Intensity Formula

LaTeX Go

Net Pressure = Gross Pressure-Effective Surcharge in Kilo Pascal
q_n = q_g-σ_s

What is Net Pressure Intensity?

Net Pressure Intensity is the net pressure that can be applied to the footing by external loads that will just initiate failure in the underlying soil. It is equal to the ultimate bearing capacity minus the stress due to the weight of the footing and any soil or surcharge directly above it.

How to Calculate Net Pressure Intensity?

Net Pressure Intensity calculator uses Net Pressure = Gross Pressure-Effective Surcharge in Kilo Pascal to calculate the Net Pressure, The Net Pressure Intensity formula is defined as the difference between the pressure in the aquifer and the pressure in a well or piezometer that is open to that aquifer. Net Pressure is denoted by q_n symbol.

How to calculate Net Pressure Intensity using this online calculator? To use this online calculator for Net Pressure Intensity, enter Gross Pressure (q_g) & Effective Surcharge in Kilo Pascal (σ_s) and hit the calculate button. Here is how the Net Pressure Intensity calculation can be explained with given input values -> 0.06045 = 60900-450.

FAQ

What is Net Pressure Intensity?

The Net Pressure Intensity formula is defined as the difference between the pressure in the aquifer and the pressure in a well or piezometer that is open to that aquifer and is represented as q_n = q_g-σ_s or Net Pressure = Gross Pressure-Effective Surcharge in Kilo Pascal. Gross Pressure is the total pressure at the base of the footing due to the weight of the superstructure and earth fill if any & Effective Surcharge in Kilo Pascal also called as surcharge load refers to the vertical pressure or any load that acts over the ground surface additional to basic earth pressure.

How to calculate Net Pressure Intensity?

The Net Pressure Intensity formula is defined as the difference between the pressure in the aquifer and the pressure in a well or piezometer that is open to that aquifer is calculated using Net Pressure = Gross Pressure-Effective Surcharge in Kilo Pascal. To calculate Net Pressure Intensity, you need Gross Pressure (q_g) & Effective Surcharge in Kilo Pascal (σ_s). With our tool, you need to enter the respective value for Gross Pressure & Effective Surcharge in Kilo Pascal and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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