Estimate the group efficiency of a 4 x 6 pile group, consisting of 400 mm diameter concrete piles at 1.2 m center-to-center spacing using a. the Converse-Labarre equation b. the Los Angeles Group Action equation

Estimate the group efficiency of a 4 x 6 pile group, consisting of 400 mm diameter concrete piles at 1.2 m center-to-center spacing using a. the Converse-Labarre equation b. the Los Angeles Group Action equation

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter18: Pile Foundation

Section: Chapter Questions

Problem 18.23P: Figure 18.39 shows a 3 5 pile group consisting of 16 concrete piles of 400 mm diameter and 12 m in...

See similar textbooks

Related questions

Q: 2. Determine the allowable load carrying capacity of the pile shown below. The average unit skin…

A: Given that, average unit skin resistance = 1.2kN/m2 unit point resistance = 30kN/m2 FS=3.0 length…

Q: 1 0.7 A group of 6 piles and a pile cap are supporting a circular m m column which has a diameter of…

Q: Calculate the pile point bearing capacity using Meyerhof's Method, where a Concrete pile of diameter…

A: The given data is: Diameter of concrete pile=12 in Length of pile=25 ft Unit weight of sand, γ=128…

Q: A 500 mm wide, square section pile, 12 m long is driven in a deep deposit of uniform clay. Value of…

Q: Q # 1. What is pile foundation? Discuss the classification of pile based on materials/composition…

A: Pile foundation- a foundation laid with deep pile is known as pile foundation.

Q: Check the total settlement of a group of pile as shown in Figure 1. The total allowable settlement…

Q: For a group of piles 3x5 with pile diameter is 0.4m and centre to centre spacing is 2.8 m,if the…

A: in given question , there is 3*5 pile with 0.4 m dia and 2.8 m spacing width of pile group=…

Q: Assume the curve shown in Figure 14.14 has been obtained from a static load test on a 60 ft long,…

Q: Check the total settlement of a group of pile as shown in Figure 1. The to set not exceed 3% of the…

Q: An 18-in.-diameter, closed-ended steel pipe pile is driven 45 ft through soft sandy silt to bear on…

A: The tip resistance is generally obtained by the force required to push the tip of the cone…

Q: A group of 9 piles of 30 cm diameter is arranged in a square configuration with a center-to-center…

A: To find ultimate group capacity based on block failure

Q: The vertical static load of single pile is tested in a project, the bearing capacity of the three…

A: The values given in the question are as follows: Bearing capacity test results of three piles→880…

Q: and thereafter, Cu 132, 32, where z is the depth Z IS each strata. Determine the ultimate capacity…

Q: 0.45m Square prestressed concrete piles are to be installed in groups of 4 at the site shown in the…

Q: Check the total settlement of a group of pile as shown in Figure 1. The t

Q: For the pile distribution below, determine the load Pp that the red pile will receive, in Ton. P=254…

A: given:d= 2 mex=0.2 mey=0.3 mH=1.3 mP=254 ton

Q: A section of a 3 x 4 group pile in a layered soil is shown below in Fig. 2. The piles are square in…

Q: A group of 9 piles of 27 cm diameter is arranged in a square configuration with a center-to-center…

A: Given data in question Cohesion Adhesion factor Square pile Spacing Length To find out Ultimate…

Q: The section of 4*5 group pipe pile, each 15 m in long, embedded in clay layer, the diameter of pile…

A: The given data is: The length of piles=15 m Diameter of pile=403 mm=0.403 m C/C spacing=700 mm=0.7 m…

Q: The static pile capacity consists of two main component: ( ) and ).

A: Static pile load capacity means the the static load the pile can take without failure.

Q: A nine-pile group composed of 0.30 m diameter pipe piles is embedded 15 m in clay soil with…

A: Data given: Diameter of the pile = 0.3 m Total depth D = 15 m Asked: Total capacity of pile act…

Q: 525 kN Medium clay 5 m Cu = 60 kPa Stiff clay Cu = 100 kPa

Q: A group pile has a section of 4 x 4 with each having a diameter of 305 mm are embedded in clay. The…

A: Given Data: Group pile=4*4 Diameter of pile=305 mm Length of the pile= 12 m Spacing between the…

Q: Design a reinforced concrete footing supported on piles. The column is 600 mm square and exerts a…

A: Solution: Given: fc = 28 MPa fy = 414 MPa Bearing capacity of pile = 95 kN Factored load = 800 kN…

Q: A group of 16 piles are arranged in a square pattern and installed in a deposit of soft clay. The…

A: Ultimate capacity of pile is the sum of bearing capacity and friction resistance. For friction pile…

Q: 20 m long bored concrete pile having a diameter of 350 mm is load tested, and the data are given…

A: Given:- L= 20 m d = 350 mm Econcrete = 25*1000 MN/m2 FS = 2.5 Max load = 1250 kN To find:- a)…

Q: A group of twelve prestressed concrete piles is to support a building column. The total downward…

A: The compressive load on each pile will be: P=Total downward loadnumber of pilesP=490012 =408.33…

Q: A driven closed-ended pile, circular in cross section, is shown in Figure 1. Calculate the…

A: Part (a): The expression for the end bearing resistance of a pile by using Meyerhof equation is…

Q: Q- Find the total load carrying capacity of a group of 9 piles with a group efficiency factor of…

A: given Load carrying capacity of one friction pile =200 kNgroup efficiency=0.9total number of piles=9

Q: b) A bored pile was installed in dense sand with the following data- kN/m The ground water table was…

A: Diameter of pile (d) = 0.6 mLength of pile( L) = 20 mAngle of internal friction(ϕ) = 30°γ = 20…

Q: A square pile group consisting 9 pile passes through a recently constructed soft deposits with qu =…

Q: c. A concrete pile is 15m long and has 406 mm diameter circular cross section. The pile is fully…

Q: A nine pile group consists of 0.30m diameter friction concrete piles 12m long. The piles are driven…

A: Given data in question Length Diameter Unconfined compressive strength Center to Center spacing…

Q: A nine pile group consists of 0.30m diameter friction concrete piles 12m long. The piles are driven…

Q: Estimate the group efficiency of a 4 X 6 pile group, consist- ing of 400 mm diameter concrete piles…

A: Answer:- 1. According to Converse Labarre the efficiency:

Q: Determine load carrying capacity of pile without considering critical depth concept. Diameter of…

A: Answer We know that the load bearing capacity of pile(Q) is given by combination of point Bearing…

Q: regarding the group pile shown in figure Q3, the piles having a diameter of 457 mm, located at (4) m…

A: The efficiency of pile group as per Converse-Labarre is given by: Where, m = number of columns of…

Q: For the four piles of a pile group having arc tan value of 18.3, the efficiency as per Converse…

Q: egarding the group pile shown in figure Q3, the piles having a diameter of 457 mm, located at (4) m…

A: Given:- d=457mm spacing=s=4m c/c depth =16m soil unit weight = 17.9 kN/m3 angle of internal…

Q: What is the significant role of setup and relaxation on driven pile capacity?

A: Field investigations have revealed that piles were driven in saturated clayey soil, as well as silty…

Q: A group of 9 friction piles, 10 m long is used as a foundation for a bridge pier. The piles used are…

Q: A 16 in diameter, 75 ft long drilled displacement pile is made of grout with f'c = 5,000 lb/in2. A…

A: Solution Given Data diameter= 16 in Long= 75 ft f'c = 5,000 lb/in2 Steel ratio= 0.04

Q: A driven closed ended pipe pile is shown below a) Find the ultimate point load b) Determine the…

A: The formula used for calculating ultimate point load- Qp=APqPWhere QP=Ultimate point loadAP=Area of…

Q: A concrete pile is 15 m long and has 406 mm diameter circular cross section. The pile is fully…

A: It is required to find I. Ultimate point load resistance of pile Ii. Total Ultimate skin friction…

Q: v. Nine-pile group consist of 0.30 m diameter friction concrete piles 12 m long arranged in 3 rows…

A: Given data Pile diameter = 0.3 m Pile spacing = 0.75 m qu = 180 kPa Nc = 9 Friction pile in clay L=…

Q: A four-pile group consists of 12 in. square prestressed concrete piles 35 ft long. The piles are…

A: Given data The ultimate capacity of piles is given by,

Q: Determine the design capacity of the concrete pile shown in Figure 3 for a factor of safety of 2. O…

Question

100%

Estimate the group efficiency of a 4 x 6 pile group, consisting of 400 mm diameter concrete piles at 1.2 m center-to-center spacing using

a. the Converse-Labarre equation

b. the Los Angeles Group Action equation

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.

Similar questions

Figure P12.36 shows a 3 5 pile group consisting of 15 concrete piles of 400 mm diameter and 12 m in length. What would be the maximum load that can be allowed on the mat with a factor of safety of 3? The piles have a center-to-center spacing of 1200 mm.
Figure 18.39 shows a 3 5 pile group consisting of 16 concrete piles of 400 mm diameter and 12 m in length. What would be the maximum load that can be allowed on the mat with a factor of safety of 3? The piles have center-to-center spacing of 1200 mm. FIG. 18.39
Determine the maximum load that can be allowed on the 450 mm diameter pile shown in Figure 18.36, with a safety factor of 3. Use the a method for computing the shaft friction. FIG. 18.36
Redo Problem 18.10 using the method for estimating the skin resistance. 18.10 A concrete pile 15 m long with a cross section of 380 mm 380 mm is fully embedded in a saturated clay layer. For the clay, sat = 18 kN/m3, = 0, and cu = 80 kN/m2. Assume that the water table lies below the tip of the pile. Determine the allowable load that the pile can carry (FS = 3). Use the a method to estimate the skin resistance.
Consider a 500 mm diameter pile having a length of 18 m in a clay. Given: γ = 20.0 kN/m3 and cu = 60 kN/m2. Determine the maximum allowable load (Qall) with FS = 3. Use the α method and Table 12.11 for determining the skin friction and Eq. (12.20) for determining the point load. Allow a factor of safety of 3. What percentage of the ultimate load is being carried by the pile shaft? Is it a friction pile?
Determine the maximum load that can be allowed on a 450 mm diameter driven pile shown in Figure P12.6, allowing a factor of safety of 3. Use K = 1.5 Ko and = 0.65 in computing the shaft load. Use Meyerhofs method for computing the point load.
Q3- regarding the group pile shown in figure Q3, the piles having a diameter of 457 mm, located at (4) m center to center and embedded to depth of 16 m in sandy soil. Determine the group pile efficiency if the soil unit weight is 17.9 kN/m3 and angle of internal friction is 32o.
A group of 25 HP 10 * 57 piles are arranged in a 5 * 5 grid at 27 inches on center and driven to a depth of 60 ft. The soil is a clay with unit side friction resistance, fn of 2000 lb/ft2 and a unit toe bearing resistance, q'n , of 15,000 lb/ft2. Determine whether individual or block failure controls the design, and determine the nominal capacity of the pile group, Png.
What is the significant role of setup and relaxation on driven pile capacity?
A concrete pile 50 ft long having a cross section of 15 in. x 15 in. is fully embedded in a saturated clay layer for which γsat = 121 lb/ft3, Φ = 0, and cu = 1600 lb/ft2. Determine the allowable load that the pile can carry. (Let FS = 3.) Use the a method Eq. (9.59) and Table 9.10 to estimate the skin friction and Vesic’s method for point load estimation.
A concrete pile is 15 m long and has 406 mm diameter circular cross section. The pile is fully embedded in sand, for which the unit weight '( = 18 kN/m3 and the frictional angle 8 = 30°. i) Calculate the ultimate point load Qp ii) Determine the total frictional resistance Qs iii) Determine the total ultimate load ofthe pile.
For the pile distribution below, determine the load Pp that the red pile will receive, in Ton. P = 254 Ton, d = 2 m, ex = 0.2 m, ey = 0.3 m, H = 1.3 m. ex, e and positive with the axes. Consider the self-weight of the head.