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Group Drag Load in Pile Group Analysis Formula

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Group Drag Load is the horizontal force that a group of piles or pile caps can collectively resist against lateral movement, such as from soil pressures or external forces. Check FAQs

Q gd = A F \cdot Y F \cdot H F + C g \cdot H \cdot c u

Q_gd - Group Drag Load?A_F - Area of Fill?Y_F - Unit Weight of Fill?H_F - Thickness of Fill?C_g - Circumference of Group in Foundation?H - Thickness of Consolidating Soil Layers?c_u - Undrained Shear Strength of Soil?

Group Drag Load in Pile Group Analysis Example

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With units

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Here is how the Group Drag Load in Pile Group Analysis equation looks like with Values.

Here is how the Group Drag Load in Pile Group Analysis equation looks like with Units.

Here is how the Group Drag Load in Pile Group Analysis equation looks like.

17.192 = 1024 \cdot 2000 \cdot 4 + 80 \cdot 1.5 \cdot 0.075

17.192MPa = 1024m² \cdot 2000kg/m³ \cdot 4m + 80m \cdot 1.5m \cdot 0.075MPa

17.192 = 1024 \cdot 2000 \cdot 4 + 80 \cdot 1.5 \cdot 0.075

Tip: Use pencil () icon above to edit Input Values and Units.

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Group Drag Load in Pile Group Analysis Solution

Follow our step by step solution on how to calculate Group Drag Load in Pile Group Analysis?

FIRST Step Consider the formula

Q gd = A F \cdot Y F \cdot H F + C g \cdot H \cdot c u

Next Step Substitute values of Variables

∴

Q gd = 1024m² \cdot 2000kg/m³ \cdot 4m + 80m \cdot 1.5m \cdot 0.075MPa

Next Step Convert Units

∴

Q gd = 1024m² \cdot 2000kg/m³ \cdot 4m + 80m \cdot 1.5m \cdot 75000Pa

Next Step Prepare to Evaluate

∴

Q gd = 1024 \cdot 2000 \cdot 4 + 80 \cdot 1.5 \cdot 75000

Next Step Evaluate

∴

Q gd = 17192000Pa

LAST Step Convert to Output's Unit

∴

Q gd = 17.192MPa

Group Drag Load in Pile Group Analysis Formula Elements

Variables

Group Drag Load

Group Drag Load is the horizontal force that a group of piles or pile caps can collectively resist against lateral movement, such as from soil pressures or external forces.

Symbol: Q_gd

Measurement: PressureUnit: MPa

Note: Value should be greater than 0.

Area of Fill

Area of Fill is the surface area of the ground that is covered by the fill material.

Symbol: A_F

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Unit Weight of Fill

Unit Weight of Fill is the weight per unit volume of a material.

Symbol: Y_F

Measurement: DensityUnit: kg/m³

Note: Value should be greater than 0.

Thickness of Fill

Thickness of Fill is the vertical dimension or depth of the compacted soil or other materials used to raise the ground level or support a structure.

Symbol: H_F

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Circumference of Group in Foundation

Circumference of Group in Foundation is total length of the peripheral of the group in foundation.

Symbol: C_g

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Thickness of Consolidating Soil Layers

Thickness of Consolidating Soil Layers refers to the depth of soil that is undergoing the process of consolidation.

Symbol: H

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Undrained Shear Strength of Soil

Undrained Shear Strength of Soil is the shear strength of soil when it is tested under conditions where pore water pressure is allowed to build up during shearing.

Symbol: c_u

Measurement: PressureUnit: MPa

Note: Value should be greater than 0.

Credits

Creator Image

Created by

Indian Institute of Information Technology (IIIT), Bhopal

Mridul Sharma has created this Formula and 200+ more formulas!

Verifier Image

Verified by Rudrani Tidke

Cummins College of Engineering for Women (CCEW), Pune

Rudrani Tidke has verified this Formula and 50+ more formulas!

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How to Evaluate Group Drag Load in Pile Group Analysis?

Group Drag Load in Pile Group Analysis evaluator uses Group Drag Load = Area of Fill*Unit Weight of Fill*Thickness of Fill+Circumference of Group in Foundation*Thickness of Consolidating Soil Layers*Undrained Shear Strength of Soil to evaluate the Group Drag Load, The Group Drag Load in Pile Group Analysis formula 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 evaluate Group Drag Load in Pile Group Analysis using this online evaluator? To use this online evaluator for Group Drag Load in Pile Group Analysis, enter Area of Fill (A_F), Unit Weight of Fill (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.

FAQs on Group Drag Load in Pile Group Analysis

What is the formula to find Group Drag Load in Pile Group Analysis?

The formula of Group Drag Load in Pile Group Analysis is expressed as Group Drag Load = Area of Fill*Unit Weight of Fill*Thickness of Fill+Circumference of Group in Foundation*Thickness of Consolidating Soil Layers*Undrained Shear Strength of Soil. Here is an example- 1.7E-5 = 1024*2000*4+80*1.5*75000.

How to calculate Group Drag Load in Pile Group Analysis?

With Area of Fill (A_F), Unit Weight of Fill (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) we can find Group Drag Load in Pile Group Analysis using the formula - Group Drag Load = Area of Fill*Unit Weight of Fill*Thickness of Fill+Circumference of Group in Foundation*Thickness of Consolidating Soil Layers*Undrained Shear Strength of Soil.

Can the Group Drag Load in Pile Group Analysis be negative?

No, the Group Drag Load in Pile Group Analysis, measured in Pressure cannot be negative.

Which unit is used to measure Group Drag Load in Pile Group Analysis?

Group Drag Load in Pile Group Analysis is usually measured using the Megapascal[MPa] for Pressure. Pascal[MPa], Kilopascal[MPa], Bar[MPa] are the few other units in which Group Drag Load in Pile Group Analysis can be measured.

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