Efficiency Factor for Group of Piles Solution

STEP 0: Pre-Calculation Summary
Formula Used
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)
Eg = ((2*fs*(b*L+w*L))+(b*Wg))/(n*Qu)
This formula uses 8 Variables
Variables Used
Efficiency Factor - Efficiency Factor is the ratio of ultimate group capacity to the sum of the ultimate capacity of each pile in group.
Average Peripheral Friction Stress of Block - (Measured in Pascal) - Average Peripheral Friction Stress of Block is denoted by fs symbol.
Thickness of Dam in Soil Mechanics - (Measured in Meter) - Thickness of Dam in Soil Mechanics is the measurement or extent of dam from side to side.
Length of Soil Section - (Measured in Meter) - Length of Soil Section is the measurement or extent of something from end to end.
Width of Soil Section - (Measured in Meter) - Width of Soil Section is the measurement or extent of something from side to side.
Width of Group - (Measured in Meter) - Width of Group is the total width of the pile group.
Number of Piles - The Number of Piles is the total number of piles.
Single Pile Capacity - Single Pile Capacity is the capacity of individual pile.
STEP 1: Convert Input(s) to Base Unit
Average Peripheral Friction Stress of Block: 15 Newton per Square Meter --> 15 Pascal (Check conversion here)
Thickness of Dam in Soil Mechanics: 2.2 Meter --> 2.2 Meter No Conversion Required
Length of Soil Section: 0.52 Meter --> 0.52 Meter No Conversion Required
Width of Soil Section: 2.921 Meter --> 2.921 Meter No Conversion Required
Width of Group: 8 Meter --> 8 Meter No Conversion Required
Number of Piles: 6 --> No Conversion Required
Single Pile Capacity: 9.45 --> No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Eg = ((2*fs*(b*L+w*L))+(b*Wg))/(n*Qu) --> ((2*15*(2.2*0.52+2.921*0.52))+(2.2*8))/(6*9.45)
Evaluating ... ...
Eg = 1.71935802469136
STEP 3: Convert Result to Output's Unit
1.71935802469136 --> No Conversion Required
FINAL ANSWER
1.71935802469136 1.719358 <-- Efficiency Factor
(Calculation completed in 00.004 seconds)

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

Efficiency Factor for Group of Piles Formula

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)
Eg = ((2*fs*(b*L+w*L))+(b*Wg))/(n*Qu)

What is Average Peripheral Friction Stress of Block?

Average peripheral friction stress of block is the average of the friction stress at the peripheral of the block.

How to Calculate Efficiency Factor for Group of Piles?

Efficiency Factor for Group of Piles calculator uses 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) to calculate the Efficiency Factor, The Efficiency Factor for Group of Piles is defined as the ratio of the actual capacity of the group to the summation of the capacities of the individual piles in the group when tested as single piles. Efficiency Factor is denoted by Eg symbol.

How to calculate Efficiency Factor for Group of Piles using this online calculator? To use this online calculator for Efficiency Factor for Group of Piles, enter Average Peripheral Friction Stress of Block (fs), Thickness of Dam in Soil Mechanics (b), Length of Soil Section (L), Width of Soil Section (w), Width of Group (Wg), Number of Piles (n) & Single Pile Capacity (Qu) and hit the calculate button. Here is how the Efficiency Factor for Group of Piles calculation can be explained with given input values -> 7.951263 = ((2*15*(2.2*0.52+2.921*0.52))+(2.2*8))/(6*9.45).

FAQ

What is Efficiency Factor for Group of Piles?
The Efficiency Factor for Group of Piles is defined as the ratio of the actual capacity of the group to the summation of the capacities of the individual piles in the group when tested as single piles and is represented as Eg = ((2*fs*(b*L+w*L))+(b*Wg))/(n*Qu) or 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). Average Peripheral Friction Stress of Block is denoted by fs symbol, Thickness of Dam in Soil Mechanics is the measurement or extent of dam from side to side, Length of Soil Section is the measurement or extent of something from end to end, Width of Soil Section is the measurement or extent of something from side to side, Width of Group is the total width of the pile group, The Number of Piles is the total number of piles & Single Pile Capacity is the capacity of individual pile.
How to calculate Efficiency Factor for Group of Piles?
The Efficiency Factor for Group of Piles is defined as the ratio of the actual capacity of the group to the summation of the capacities of the individual piles in the group when tested as single piles is calculated using 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). To calculate Efficiency Factor for Group of Piles, you need Average Peripheral Friction Stress of Block (fs), Thickness of Dam in Soil Mechanics (b), Length of Soil Section (L), Width of Soil Section (w), Width of Group (Wg), Number of Piles (n) & Single Pile Capacity (Qu). With our tool, you need to enter the respective value for Average Peripheral Friction Stress of Block, Thickness of Dam in Soil Mechanics, Length of Soil Section, Width of Soil Section, Width of Group, Number of Piles & Single Pile Capacity 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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