Answered: What is 'negative skin friction' on…

What is 'negative skin friction' on pile and why does it causeconcern? How do you estimate its value in clay and sandy soil? Suggestmeans of controlling it.

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 18.13P

See similar textbooks

Related questions

Q: Q3. A 1200-lb hammer falling freely through 3 ft drives a 600lb pile in. vertically into the ground.…

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: the water table rises to the excavation depth

A: The moment induced piles are predominantly the piles that withstands the seismic forces.

Q: Find the weight of the extra soil needed to be hauled off site after theterrain in the given diagram…

A: To determine the weight of soil that needs to be hauled off after for a formation level of 0 ft.…

Q: A single pile of diameter 50 cm and length 10 m is driven into clay having unconfined compressive…

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

Q: Provide Feld’s rule for determining group capacity of pile groups ?

A: The general mathematical formula to calculate the efficiency of the pile group is ζ = Total pile…

Q: A concrete pile 450 mm in diameter and 15 m long is driven into a clay soil. The undrained strength…

Q: What type of pile is least prone to damage during handling?

A: There are many different types of pile foundation available which are used depending upon function…

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: A pile with a square cross-section, B × B = 0.5 m × 0.5 m, is driven in a clay soil which has an…

Q: The results of pile load tests are usually considered to be the “correct” load capacity, and all…

A: IT is not possible to find a single correct capacity of pile. This is generally because we have to…

Q: Explain why pile driving formulas are not reliable, and why a wave equation analysis is a better…

A: Solution: Pile driving formulas are not reliable because Pile Driving formulas are very simple.…

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

Q: Which advantages fall under which type of pile? Please answer this asap. For upvote. Thank you very…

A: The foundation or substructure of the building is the structure lying below the ground surface to…

Q: Under what conditions will tensile stresses be generated in pile driving? In what situations should…

A: When the pile is driven into the soil, stresses are developed due to the pile goes downward. due to…

Q: A timber pile 400 mm in diameter is subjected to the following axial compressive loads: dead =600…

A: Solution Given Data Diameter= 400 mm Dead load= 600 kN Live load= 250 kN earthquake=200 kN Allowable…

Q: An 18 in diameter, 75 ft long ACIP pile is to be constructed in the following soil profile:…

A: Given:- d = 225 ft FOS = 3 d =18 inch L=75 ft To find:- ASD allowable downward load capacity

Q: What would be the estimated ultimate tensile capacity of the pile?

Q: What is the ultimate downward load carrying capacity of a single pile driven in soil?

A: The ultimate downward load carrying capacity of single pile driven in soil are : - Using Analytic…

Q: A precast circular pile (like a concrete rod) of length Land diameter D is to be lifted at two…

Q: Sometimes pile driving contractors use predrilling when installing piles. This method consists of…

A: Predrilling is not suitable as much time before of pile installation because the purpose of deep…

Q: SITUATION. A 15m precast concrete pile is to be lifted. If the unit weight of concrete is 23.54kN/m3…

A: let w be the udl over pile w = 23.5x0.4x0.4 = 3.76KN/m

Q: Describe about the pile impedance.

A: Pile impedance:

Q: The average values of the undrained shear strength (c,) with depth are given as follows: Depth (m) ,…

A: The length of the pile lies between the 8 m to 12 m. So, cu=80 kN/m2 The empirical adhesion factor…

Q: Determine the maximum load that can be allowed on a 45cm x 45cm diameter bored pile shown in…

A: Calculate the ultimate load carrying capacity of the bored pile, Qu = 133NAb + 0.67N'As N - SPT N…

Q: Discuss about the Carrying capacity of single pile in granular and cohesive soil ?

A: The load bearing capacity of foundation soil or rock which enables it to bear and transmit load…

Q: Discuss the method of obtaining ultimate load and also allowableload on a single pile from pile load…

A: Pile load test is the in situ method of the calculation of the load and settlement. This method is…

Q: e advantages and disadvantages of using sheet pile coffer

A: This question has been taken from geo technical engineering.

Q: Q.1 Consider a real-life scenario in which you have to do a piling work on a dry surface? The Pile…

A: The following equipment are used during piling for the given condition: 1. Piling rigs: This is used…

Q: What are the Assumed conditions for estimating settlement of pile groups?

A: Condition For the settlement of pile group in clay soil:

Q: Explain these two questions based on pile foundations: i) How do the soil stress states and strain…

A: 1) How do the soil stress states and strain states change by the installation and structural loads?…

Q: Discuss the ultimate load carrying capacity of the single pile when the pile embedded soil is; i)…

A: In Granular soils the ultimate load-carrying capacity: The pile drives load-carrying capacity from…

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: 10. The hammer of a pile driver weighs 1000 lbs and must be lifted a vertical distance of 6ft in 3…

Q: A concrete pile having a diameter of 0.30 m is to be driven into a loose sand having a unit weight…

Q: SITUATION 1: A pre-stressed concrete pile of length L is to be picked up by crane at two points,…

A: Due to the loading in the pile no cracking will be form hence the positive bending moment at mid of…

Q: 4. The following data was obtained in a vertical pile load test on 300 mm pile diameter pile.…

A: Safe load / Allowable load on a single pile should be the least of the following: 1 Two-thirds of…

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: Q Y- 17.5 kN/m Cohesion = 28 kPa a - 0.95 Y= 17.8 kN/m w = 25% & Gs = 2.6 Cohesion = 35 kPa a = 0.85…

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: Assume in problem 2 that the water table is at the ground surface and the saturated unit weight is…

A: Given Length of concrte pile L=15 m and diamete D=45 cm=0.45 mfriction angle ϕ=30°water…

Q: 8. Pile Capacity Calculations A 30" diameter friction pile which has a 24' length in contact with…

Q: Elevati Distanc on (ft) (y- axis) e (ft) (x- axis) 5 15 10 17 10 18 15 19 15 28 33 40 -5 44 -5 54…

A: First find the excavation volume using the give values and then determine the volume of filling.…

Q: Note: Read the question carefully and give me right solution according to the question. A pile is…

A: Foundations are provided in a structure to provide stability and transfer the load to the soil…

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

Question

What is 'negative skin friction' on pile and why does it cause
concern? How do you estimate its value in clay and sandy soil? Suggest
means of controlling it.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

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

Briefly explain the types of failures in pile groups.
Q # 2. Discuss in your own words with the help of diagram, the load transfer mechanism in skin resistance-end bearing piles. Subject is Geotechnical design Plz solve it
Explain the difference between a rigid analysis and a nonrigid analysis for lateral pile loading. Think about soil-structure interaction.
i) How do the soil stress states and strain states change by the installation and structural loads? ii) Is the analysis of the load capacity of a pile is exact or is it an approximation? please tell this is in brief. please reply quickly.
A frictional pile with a circular cross- section (diameter = D) is pushed into the soil to a distance (L) and then it is %3D subjected to an axial force (P) on its top end. Derive a formula to calculate the normal stress in any section x. f N/mm2 D Cross section Maximum size for new files: 128MB Files
State the different types of piles according to its function and construction?
What is “block failure” in a group of piles and how does it differ from individual failure?
Discuss about the Carrying capacity of single pile in granular and cohesive soil ?
Explain these two questions based on pile foundations in about 8-10 lines. i) How do the soil stress states and strain states change by the installation and structural loads? ii) Is the analysis of the load capacity of a pile is exact or is it an approximation?
Explain the Correlation of pile shaft adhesion factor α and soil cohesion.
Explain these two questions based on pile foundations: i) How do the soil stress states and strain states change by the installation and structural loads? ii) Is the analysis of the load capacity of a pile is exact or is it an approximation?
Q # 1. What is pile foundation? Discuss the classification of pile based on materials/composition and load transfer mechanism.