Pore Pressure Ratio given Horizontal Width Solution

STEP 0: Pre-Calculation Summary
Formula Used
Pore Pressure Ratio = (Upward Force*Width of Soil Section)/Total Weight of Slice in Soil Mechanics
ru = (u*w)/ΣW
This formula uses 4 Variables
Variables Used
Pore Pressure Ratio - Pore pressure ratio is a crude way of describing pore-water conditions in a slope stability analysis.
Upward Force - (Measured in Pascal) - Upward Force due to seepage water.
Width of Soil Section - (Measured in Meter) - Width of Soil Section is the measurement or extent of something from side to side.
Total Weight of Slice in Soil Mechanics - (Measured in Newton) - Total Weight of Slice in Soil Mechanics is Weight of the slice taken into the consideration.
STEP 1: Convert Input(s) to Base Unit
Upward Force: 20 Pascal --> 20 Pascal No Conversion Required
Width of Soil Section: 2.921 Meter --> 2.921 Meter No Conversion Required
Total Weight of Slice in Soil Mechanics: 59.8 Newton --> 59.8 Newton No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
ru = (u*w)/ΣW --> (20*2.921)/59.8
Evaluating ... ...
ru = 0.976923076923077
STEP 3: Convert Result to Output's Unit
0.976923076923077 --> No Conversion Required
FINAL ANSWER
0.976923076923077 0.976923 <-- Pore Pressure Ratio
(Calculation completed in 00.004 seconds)

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25 Slope Stability Analysis using Bishops Method Calculators

Weight of Slice given Total Normal Force Acting on Slice
Go Weight of Slice = (Total Normal Force in Soil Mechanics*cos((Angle of Base*pi)/180))+(Shear Force on Slice in Soil Mechanics*sin((Angle of Base*pi)/180))-Vertical Shear Force+Vertical Shear Force at other Section
Resultant Vertical Shear Force on Section N+1
Go Vertical Shear Force at other Section = Weight of Slice+Vertical Shear Force-(Total Normal Force in Soil Mechanics*cos((Angle of Base*pi)/180))+(Shear Force on Slice in Soil Mechanics*sin((Angle of Base*pi)/180))
Resultant Vertical Shear Force on Section N
Go Vertical Shear Force = (Total Normal Force in Soil Mechanics*cos((Angle of Base*pi)/180))+(Shear Force on Slice in Soil Mechanics*sin((Angle of Base*pi)/180))-Weight of Slice+Vertical Shear Force at other Section
Effective Cohesion of Soil given Shear Force in Bishop's Analysis
Go Effective Cohesion = ((Shear Force on Slice in Soil Mechanics*Factor of Safety)-((Total Normal Force-(Upward Force*Length of Arc))*tan((Effective Angle of Internal Friction*pi)/180)))/Length of Arc
Factor of Safety given Shear Force in Bishop's Analysis
Go Factor of Safety = ((Effective Cohesion*Length of Arc) +(Total Normal Force-(Upward Force*Length of Arc))*tan((Effective Angle of Internal Friction*pi)/180))/Shear Force on Slice in Soil Mechanics
Effective Angle of Internal Friction given Shear Force in Bishop's Analysis
Go Effective Angle of Internal Friction = atan(((Shear Force on Slice in Soil Mechanics*Factor of Safety)-(Effective Cohesion*Length of Arc))/(Total Normal Force-(Upward Force*Length of Arc)))
Effective Cohesion of Soil given Normal Stress on Slice
Go Effective Cohesion = Shear Strength of Soil in Pascal-((Normal Stress in Pascal-Upward Force)*tan((Effective Angle of Internal Friction*pi)/180))
Normal Stress on Slice given Shear Strength
Go Normal Stress in Pascal = ((Shear Strength of Soil in Pascal-Cohesion in Soil)/tan((Effective Angle of Internal Friction*pi)/180))+Upward Force
Effective Angle of Internal Friction given Shear Strength
Go Effective Angle of Internal Friction = atan((Shear Strength-Effective Cohesion)/(Normal Stress in Mega Pascal-Upward Force))
Radius of Arc when Total Shear Force on Slice is Available
Go Radius of Soil Section = (Total Weight of Slice in Soil Mechanics*Horizontal Distance)/Total Shear Force in Soil Mechanics
Total Weight of Slice given Total Shear Force on Slice
Go Total Weight of Slice in Soil Mechanics = (Total Shear Force in Soil Mechanics*Radius of Soil Section)/Horizontal Distance
Horizontal Distance of Slice from Centre of Rotation
Go Horizontal Distance = (Total Shear Force in Soil Mechanics*Radius of Soil Section)/Total Weight of Slice in Soil Mechanics
Factor of Safety given by Bishop
Go Factor of Safety = Stability Coefficient m in Soil Mechanics-(Stability Coefficient n*Pore Pressure Ratio)
Pore Pressure Ratio given Horizontal Width
Go Pore Pressure Ratio = (Upward Force*Width of Soil Section)/Total Weight of Slice in Soil Mechanics
Unit weight of Soil given Pore Pressure Ratio
Go Unit Weight of Soil = (Upward Force in Seepage Analysis/(Pore Pressure Ratio*Height of Slice))
Height of Slice given Pore Pressure Ratio
Go Height of Slice = (Upward Force in Seepage Analysis/(Pore Pressure Ratio*Unit Weight of Soil))
Pore Pressure Ratio given Unit Weight
Go Pore Pressure Ratio = (Upward Force in Seepage Analysis/(Unit Weight of Soil*Height of Slice))
Length of Arc of Slice given Effective Stress
Go Length of Arc = Total Normal Force/(Effective Normal Stress+Total Pore Pressure)
Pore Pressure given Effective Stress on Slice
Go Total Pore Pressure = (Total Normal Force/Length of Arc)-Effective Normal Stress
Effective Stress on Slice
Go Effective Normal Stress = (Total Normal Force/Length of Arc)-Total Pore Pressure
Length of Arc of Slice given Shear Force in Bishop's Analysis
Go Length of Arc = Shear Force on Slice in Soil Mechanics/Shear Stress of Soil in Pascal
Change in Pore Pressure given Overall Pore Pressure Coefficient
Go Change in Pore Pressure = Change in Normal Stress*Pore Pressure Coefficient Overall
Change in Normal Stress given Overall Pore Pressure Coefficient
Go Change in Normal Stress = Change in Pore Pressure/Pore Pressure Coefficient Overall
Normal Stress on Slice
Go Normal Stress in Pascal = Total Normal Force/Length of Arc
Length of Arc of Slice
Go Length of Arc = Total Normal Force/Normal Stress in Pascal

Pore Pressure Ratio given Horizontal Width Formula

Pore Pressure Ratio = (Upward Force*Width of Soil Section)/Total Weight of Slice in Soil Mechanics
ru = (u*w)/ΣW

What is Shear Stress?

Shear stress, often denoted by τ (Greek: tau), is the component of stress coplanar with a material cross section. It arises from the shear force, the component of force vector parallel to the material cross section.

How to Calculate Pore Pressure Ratio given Horizontal Width?

Pore Pressure Ratio given Horizontal Width calculator uses Pore Pressure Ratio = (Upward Force*Width of Soil Section)/Total Weight of Slice in Soil Mechanics to calculate the Pore Pressure Ratio, The Pore Pressure ratio given Horizontal Width is defined as the pressure of the fluid in the pore space that may influence Bishop's method of slope stability. Pore Pressure Ratio is denoted by ru symbol.

How to calculate Pore Pressure Ratio given Horizontal Width using this online calculator? To use this online calculator for Pore Pressure Ratio given Horizontal Width, enter Upward Force (u), Width of Soil Section (w) & Total Weight of Slice in Soil Mechanics (ΣW) and hit the calculate button. Here is how the Pore Pressure Ratio given Horizontal Width calculation can be explained with given input values -> 0.976923 = (20*2.921)/59.8.

FAQ

What is Pore Pressure Ratio given Horizontal Width?
The Pore Pressure ratio given Horizontal Width is defined as the pressure of the fluid in the pore space that may influence Bishop's method of slope stability and is represented as ru = (u*w)/ΣW or Pore Pressure Ratio = (Upward Force*Width of Soil Section)/Total Weight of Slice in Soil Mechanics. Upward Force due to seepage water, Width of Soil Section is the measurement or extent of something from side to side & Total Weight of Slice in Soil Mechanics is Weight of the slice taken into the consideration.
How to calculate Pore Pressure Ratio given Horizontal Width?
The Pore Pressure ratio given Horizontal Width is defined as the pressure of the fluid in the pore space that may influence Bishop's method of slope stability is calculated using Pore Pressure Ratio = (Upward Force*Width of Soil Section)/Total Weight of Slice in Soil Mechanics. To calculate Pore Pressure Ratio given Horizontal Width, you need Upward Force (u), Width of Soil Section (w) & Total Weight of Slice in Soil Mechanics (ΣW). With our tool, you need to enter the respective value for Upward Force, Width of Soil Section & Total Weight of Slice in Soil Mechanics 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 Pore Pressure Ratio?
In this formula, Pore Pressure Ratio uses Upward Force, Width of Soil Section & Total Weight of Slice in Soil Mechanics. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Pore Pressure Ratio = (Upward Force in Seepage Analysis/(Unit Weight of Soil*Height of Slice))
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