Group Drag Load in Pile Group Analysis Calculator

✖Area of Fill is the area in which the earth is filled.ⓘ Area of Fill [A_F]			+10% -10%
✖Unit Weight of Fill in Soil Mechanics is the weight per unit volume of a material.ⓘ Unit Weight of Fill in Soil Mechanics [Y_F]			+10% -10%
✖Thickness of Fill is the thickness of the area or space to be filled up with earth.ⓘ Thickness of Fill [H_F]			+10% -10%
✖Circumference of Group in Foundation is total length of the peripheral of the group in foundation.ⓘ Circumference of Group in Foundation [C_g]			+10% -10%
✖Thickness of Consolidating Soil Layers is the total thickness of all the consolidating soil layers.ⓘ Thickness of Consolidating Soil Layers [H]			+10% -10%
✖Undrained Shear Strength of Soil within zone 1 pile diameter above and 2 diameters below pile tip.ⓘ Undrained Shear Strength of Soil [c_u]			+10% -10%

✖Group Drag Load is due to lateral (horizontal) loads generated in high-wind or seismic events.ⓘ Group Drag Load in Pile Group Analysis [Q_gd]

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Formula

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Group Drag Load in Pile Group Analysis

Formula

`"Q"_{"gd"} = "A"_{"F"}*"Y"_{"F"}*"H"_{"F"}+"C"_{"g"}*"H"*"c"_{"u"}`

Example

`"17.192MPa"="1024m²"*"2000kg/m³"*"4m"+"80m"*"1.5m"*"0.075MPa"`

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Group Drag Load in Pile Group Analysis Solution

STEP 0: Pre-Calculation Summary

Formula Used

Group Drag Load = Area of Fill*Unit Weight of Fill in Soil Mechanics*Thickness of Fill+Circumference of Group in Foundation*Thickness of Consolidating Soil Layers*Undrained Shear Strength of Soil
Q_gd = A_F*Y_F*H_F+C_g*H*c_u
This formula uses 7 Variables

Variables Used

Group Drag Load - (Measured in Pascal) - Group Drag Load is due to lateral (horizontal) loads generated in high-wind or seismic events.
Area of Fill - (Measured in Square Meter) - Area of Fill is the area in which the earth is filled.
Unit Weight of Fill in Soil Mechanics - (Measured in Kilogram per Cubic Meter) - Unit Weight of Fill in Soil Mechanics is the weight per unit volume of a material.
Thickness of Fill - (Measured in Meter) - Thickness of Fill is the thickness of the area or space to be filled up with earth.
Circumference of Group in Foundation - (Measured in Meter) - Circumference of Group in Foundation is total length of the peripheral of the group in foundation.
Thickness of Consolidating Soil Layers - (Measured in Meter) - Thickness of Consolidating Soil Layers is the total thickness of all the consolidating soil layers.
Undrained Shear Strength of Soil - (Measured in Pascal) - Undrained Shear Strength of Soil within zone 1 pile diameter above and 2 diameters below pile tip.

STEP 1: Convert Input(s) to Base Unit

Area of Fill: 1024 Square Meter --> 1024 Square Meter No Conversion Required
Unit Weight of Fill in Soil Mechanics: 2000 Kilogram per Cubic Meter --> 2000 Kilogram per Cubic Meter No Conversion Required
Thickness of Fill: 4 Meter --> 4 Meter No Conversion Required
Circumference of Group in Foundation: 80 Meter --> 80 Meter No Conversion Required
Thickness of Consolidating Soil Layers: 1.5 Meter --> 1.5 Meter No Conversion Required
Undrained Shear Strength of Soil: 0.075 Megapascal --> 75000 Pascal (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

Q_gd = A_F*Y_F*H_F+C_g*H*c_u --> 1024*2000*4+80*1.5*75000

Evaluating ... ...

Q_gd = 17192000

STEP 3: Convert Result to Output's Unit

17192000 Pascal -->17.192 Megapascal (Check conversion here)

FINAL ANSWER

17.192 Megapascal <-- Group Drag Load

(Calculation completed in 00.008 seconds)

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Home » Engineering » Civil » Geotechnical Engineering » Pile Foundations » Group Of Piles » Group Drag Load in Pile Group Analysis

Credits

Created by Mridul Sharma

Indian Institute of Information Technology (IIIT), Bhopal

Mridul Sharma has created this Calculator and 200+ more calculators!

Verified by Rudrani Tidke

Cummins College of Engineering for Women (CCEW), Pune

Rudrani Tidke has verified this Calculator and 50+ more calculators!

< 6 Group Of Piles Calculators

Efficiency Factor for Group of Piles

Go Efficiency Factor = ((2*Average Peripheral Friction Stress of Block*(Thickness of Dam in Soil Mechanics*Length of Soil Section+Width of Soil Section*Length of Soil Section))+(Thickness of Dam in Soil Mechanics*Width of Group))/(Number of Piles*Single Pile Capacity)

Allowable Concrete-Rock Bond Stress given Allowable Design Load

Go Allowable Concrete-rock Bond Stress = (Allowable Design Load on Rock Socket-((pi*(Socket Diameter^2)*Allowable Bearing Pressure on Rock)/4))/(pi*Socket Diameter*Socket Length)

Allowable Bearing Pressure on Rock given Allowable Design Load

Go Allowable Bearing Pressure on Rock = (Allowable Design Load on Rock Socket-(pi*Socket Diameter*Socket Length*Allowable Concrete-rock Bond Stress))/((pi*(Socket Diameter^2))/4)

Socket Length given Allowable Design Load on Rock Socket

Go Socket Length = (Allowable Design Load on Rock Socket-((pi*(Socket Diameter^2)*Allowable Bearing Pressure on Rock)/4))/(pi*Socket Diameter*Allowable Concrete-rock Bond Stress)

Allowable Design Load on Rock Socket

Go Allowable Design Load on Rock Socket = (pi*Socket Diameter*Socket Length*Allowable Concrete-rock Bond Stress)+((pi*(Socket Diameter^2)*Allowable Bearing Pressure on Rock)/4)

Group Drag Load in Pile Group Analysis

Go Group Drag Load = Area of Fill*Unit Weight of Fill in Soil Mechanics*Thickness of Fill+Circumference of Group in Foundation*Thickness of Consolidating Soil Layers*Undrained Shear Strength of Soil

Group Drag Load in Pile Group Analysis Formula

What is Group Drag Load?

When the tip of pile is bearing in a relatively stiff stratum, the upper compressible soil will move down relative to the pile this will induce a drag load on the pile/pile group.

How to Calculate Group Drag Load in Pile Group Analysis?

Group Drag Load in Pile Group Analysis calculator uses Group Drag Load = Area of Fill*Unit Weight of Fill in Soil Mechanics*Thickness of Fill+Circumference of Group in Foundation*Thickness of Consolidating Soil Layers*Undrained Shear Strength of Soil to calculate the Group Drag Load, The Group Drag Load in Pile Group Analysis is defined as the drag load on the pile group induced on the pile/ pile group. Group Drag Load is denoted by Q_gd symbol.

How to calculate Group Drag Load in Pile Group Analysis using this online calculator? To use this online calculator for Group Drag Load in Pile Group Analysis, enter Area of Fill (A_F), Unit Weight of Fill in Soil Mechanics (Y_F), Thickness of Fill (H_F), Circumference of Group in Foundation (C_g), Thickness of Consolidating Soil Layers (H) & Undrained Shear Strength of Soil (c_u) and hit the calculate button. Here is how the Group Drag Load in Pile Group Analysis calculation can be explained with given input values -> 1.7E-5 = 1024*2000*4+80*1.5*75000.

FAQ

What is Group Drag Load in Pile Group Analysis?

The Group Drag Load in Pile Group Analysis is defined as the drag load on the pile group induced on the pile/ pile group and is represented as Q_gd = A_F*Y_F*H_F+C_g*H*c_u or Group Drag Load = Area of Fill*Unit Weight of Fill in Soil Mechanics*Thickness of Fill+Circumference of Group in Foundation*Thickness of Consolidating Soil Layers*Undrained Shear Strength of Soil. Area of Fill is the area in which the earth is filled, Unit Weight of Fill in Soil Mechanics is the weight per unit volume of a material, Thickness of Fill is the thickness of the area or space to be filled up with earth, Circumference of Group in Foundation is total length of the peripheral of the group in foundation, Thickness of Consolidating Soil Layers is the total thickness of all the consolidating soil layers & Undrained Shear Strength of Soil within zone 1 pile diameter above and 2 diameters below pile tip.

How to calculate Group Drag Load in Pile Group Analysis?

The Group Drag Load in Pile Group Analysis is defined as the drag load on the pile group induced on the pile/ pile group is calculated using Group Drag Load = Area of Fill*Unit Weight of Fill in Soil Mechanics*Thickness of Fill+Circumference of Group in Foundation*Thickness of Consolidating Soil Layers*Undrained Shear Strength of Soil. To calculate Group Drag Load in Pile Group Analysis, you need Area of Fill (A_F), Unit Weight of Fill in Soil Mechanics (Y_F), Thickness of Fill (H_F), Circumference of Group in Foundation (C_g), Thickness of Consolidating Soil Layers (H) & Undrained Shear Strength of Soil (c_u). With our tool, you need to enter the respective value for Area of Fill, Unit Weight of Fill in Soil Mechanics, Thickness of Fill, Circumference of Group in Foundation, Thickness of Consolidating Soil Layers & Undrained Shear Strength of Soil 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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