Answered: Assume the curve shown in Figure 14.14…

Assume the curve shown in Figure 14.14 has been obtained from a static load test on a 60 ft long, PP18 X 0.375 pile. Using Davisson method, compute the nominal downward axial load capacity.

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter9: Pile Foundations

Section: Chapter Questions

Problem 9.2P: Refer to the pile shown in Figure P9.1. Estimate the side resistance Qs by Using Eqs. (9.40) through...

See similar textbooks

Related questions

Q: Q4) The ultimate load capacity of a 10 m long concrete pile of square cross section 500 mm x 500 mm…

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 group of 25 HP 10 * 57 piles are arranged in a 5 * 5 grid at 27 inches on center and driven to a…

A: Given:- 5* 5 grid pile 25 HP 10*57 piles spacing , s = 27 inch s=2.25 feet L = 60 ft fn=1000 lb/ft2…

Q: A frictional pile with a circular cross- section (diameter = D) is pushed into the soil to a…

Q: For the sheet pile condition shown in the figure, find the depth below the drec net pressure equals…

A: Ka=1-sinϕ1+sinϕ=1-sin 301+ sin 30⇒Ka=0.33also,Kp=1+sinϕ1-sinϕ=1+sin 301-sin 30⇒Kp=3…

Q: A 14-in.-diameter steel pipe pile is driven 50 ft into overconsolidated clays having the following…

A: The ultimate bearing capacity of the pile is given by,

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

Q: A 16 in diameter, 55 ft long drilled displacement pile is to be constructed in the following soil…

A: Calculate the Toe Bearing capacity: The construction method for DD piles does not provide any…

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: 10.8 Determine the sheet-pile section modulus for the braced cut described in Problem 10.7. Use o =…

A: Calculating the stability number for the given soil: SN=γHcWhere,γ=18 KN/m3c=30 KN/m2H=7 mSN=18×730…

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: Discuss the following method of load carrying capacity of pile : Static formula

A: There are four types of the load-carrying capacity of piles1) Static Method2) Dynamic Formulas3)…

Q: 3. As shown in the diagram, the RC solid precast square pile will be lifted up by two points, the…

Q: A close ended pipe pile having a circular cross section and diameter of 0.5 m is embedded in clay in…

Q: A cantilever sheet pile is 8.0 m long with a depth of embedment of 3.0 m. Angle of internal friction…

Q: Problem 1: A concrete bored pile has a diameter of 800 mm as given in the figure below. Calculate…

A: The load-carrying capacity of the pile is equal to the sum of load distributed by the end bearing…

Q: Estimate the allowable load capacity of a 0.5-mdiameter steel closed-ended pipe pile embedded 17 m…

A: Driven pile are mostly used when the deep foundation needed. Piles are slender and it is driven…

Q: A 600 mm square prestressed concrete pile is to be driven to a depth of 18 m into the following soil…

A: (i) Skin friction( Qs):QS=QS1+QS2+QS3+QS3for top clayey silt QS1=αCAShere, C =35 KPa and…

Q: Determine the breaking wave load on a 1 ft diàmeter pile in a design water depth of 5 ft.

A: We assume breaking load on pile acts at silt water level .. Given Dia of pile = 1 ft.(round pile)…

Q: A frictional pile with a circular cross- section (diameter = D) is pushed into the soil to a…

Q: Given the sheet pile shown in figure : 1. Draw the flow scale 1.5m 3.0mi net to (1:100) and compute…

A: 1. Seepage Quantity (Q)=0.0027 m3/sec 2. Yes structure is safe

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: Determine the seepage loss per meter length of the sheet pile if hydraulic conductivity, k is 4.1 X…

Q: A 15 m pile is driven into clay with a subgrade modulus (ksub) of 30 000 kPa/m. The concrete pile…

A: Given:- The length of the pile = 15 m The subgrade modulus of the clay = ksub = 30,000 kPa/m. The…

Q: Consider a continuous flight auger pile in a sandy soil deposit 10 m long with a diameter of 0.45 m.…

A: Answer Calculate the range of values of the standard penetration Calculate the upper limit of the…

Q: The ultimate load capacity of a 10 m long concrete pile of square cross section 500 mm x 500 mm…

A: Given, For pile 1:- Length = 10m Cross section = 500mm×500mm C=40kPa Ultimate load capacity= 700kN…

Q: A wooden pile is driven to refuse by a drop 10 hammer. The hammer weights 750 kg and has a free fall…

Q: A 300 mm diameter steel pipe pile with 10 mm wall thickness is to be driven to a depth of 15 m in a…

A: The workload of the building creates a vertical displacement of the soil surface, which is known as…

Q: A 20-m-long concrete pile is shown in Figure P9.1. Estimate the ultimate point load Qp bya.…

A: Given:- ∅'2=42γ=18.5kN/m3Concrete pile=460 x 460mmLoose sand:-∅'1=30 degreeγ=18.6kN/m3 L=20m To…

Q: Figure P12.36 shows a 3 X 5 pile group consisting of 15 concrete piles of 400 mm diameter and 12 m…

A: Solution:

Q: A 30 cm diameter concrete pile is driven into a homogeneous consolidated clay deposit (C = 40 kPa, a…

Q: For a Pile designed for an allowable load of 4 kN driven by a single acting steam hammer with a…

A: Given:- The allowable load for a designed pile = 4 kN The pile is driven by a single acting steam…

Q: A close ended pipe pile having a circular cross section and diameter of 0.5 m is embedded in clay in…

A: Given: diameter of the pile=0.5m 1. Calculation of ultimate skin resistance by λ method…

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 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: Determine the allowable load for a steel closed-ended pipe pile, 0.4 m in diameter, driven 20 m into…

A: We have to find the value of allowable load for a steel closed ended pipe pile that is 0.4 m in…

Q: A construction site is underlain by clay soil (an overconsolidated deposit). A 9-in.-diameter steel…

A: Given data: Diameter of the pile (d) = 0.9 in. Depth of driven (D) = 35 ft. Failure load or test…

Q: Consider a continuous flight auger pile in a sandy soil deposit 10 m long with a diameter of 0.45 m.…

A: Given: Length of pile(L) = 10 mDiameter of pile (D) = 0.45 mUnit weight of soil (γ) = 15.5 KN/m2

Q: A group of driven piles are to be built in layered soils as shown in the figure below. Please…

A: For ϕ = 35o , Nq = 33.5 Assuming pile to be concrete, and for loose sand {as γ=120psf}; k = 1…

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: 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: 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 frictional pile with a circular cross-section (diameter = D) is pushed into the soil %3! to a…

Q: A helical pile with 12 in diameter flights and a 2 in square rod is to be installed to a depth of 30…

A: Given:- The diameter of the helical pile = 12 in The thickness of the square rod = 2 in The depth…

Q: A 30 cm diameter concrete pile is driven into a homogeneous consolidated clay deposit (Cy = 40 kPa,…

Q: Estimate the group efficiency of a 4 x 6 pile group, consisting of 400 mm diameter concrete piles at…

A: Given, Diameter of pile = 400mm Center to center spacing = 1.2 m a. Group efficiency using…

Concept explainers

Load and resistance factor design

Load and resistance factors design (LRFD), also known as Limit state design (LSD), refers to the design method used in building engineering. A boundary condition is a condition of a structure where it can no longer meet the relevant design requirements. The condition may refer to the load level or other actions on the structure, while the terms refer to the integrity of the structure, suitability for use, durability, or other design requirements. A structure designed for LRFD is limited to keeping track of all possible actions during its design time and is always ready for use, with the appropriate level of reliability in each boundary condition. LRFD-based construction codes clearly define the appropriate levels of reliability in their instructions.

Question

Assume the curve shown in Figure 14.14 has been obtained from a static load test on a 60 ft long,
PP18 X 0.375 pile. Using Davisson method, compute the nominal downward axial load capacity.
Applied Downward Load, P (kN)
500
1000
10
40
50
Settlement, 8 (mm)
20

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

Step 2

Step 3

Step 4

Step 5

Trending now

This is a popular solution!

Step by step

Solved in 5 steps with 7 images

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

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
Refer to the pile shown in Figure P9.1. Estimate the side resistance Qs by Using Eqs. (9.40) through (9.42). Use K = 1.5 and Coyle and Castello’s method [Eq. (9.44)]
Determine the maximum load that can be allowed on the 450 mm diameter pile shown in Figure P12.9, with a factor of safety of 3. Use the α method and Table 12.11 for determining the skin friction and Eq. (12.20) for determining the point load.
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?
Redo Problem 12.3 using Coyle and Castellos methods for estimating both Qp and Qs. 12.3 A 500 mm diameter and 20 m long concrete pile is driven into a sand where = 18.5 kN/m3 and = 32. Assuming = 0.7 and K = 1.5 Ko, determine the load-carrying capacity of the pile, with a factor of safety of 3. Use Meyerhofs method [Eq. (12.18)] for computing the point load-carrying capacity Qp, and Eqs. (12.42) and (12.43) for computing the load-carrying capacity of the pile shaft Qs.
QUESTION 5 Calculate the load bearing capacity of the pile shown in Figure Q5. Assume that it is a bored pile, and state other assumptions made. 0.6 m Firm Clay Y. = 18KN/m2 = 40 kPa 3m Stiff Clay Y, = 19kN/m³ Cu = 110 kPa 2.5m WT 13m Dense Gravel Y. = 21kN/m² o' = 37° 15m Figure Q5
6) A 2-ft x 2-ft square concrete pile is shown. Ignore the resistance of the soft clay. Assume Na 10. For a safety factor of 3.0, the allowable load capacity of the pile is most nearly: a. 344 kips b. 169 kips c. 128 kips d. 225 kips 5 ft 30 ft R SOFT CLAY y=120 pcf SAND Y = 115 pcf =32°
A frictional pile with a circular cross-section (diameter = D) is pushed into the soil %3D to a distance (L) and then it is subjected to an axial force (P) on its top end. Derive a formula to calculate the normal stress in any section x. P xx f N/mm2
Curve in the figure has been obtained from a static load test on a 60 ft long, 12-in circular solid concrete pile. Using Davisson method, compute the nominal downward axial load capacity. Hint: units should be consistent. Settlement, & (mm) 10 20 30 40 50 60 70 0 Applied Downward Load, P (kN) 500 1000 1500
3. Determine the maximum load that can be allowed on a 45cm x 45cm diameter bored pile shown in Figure-1 allowing a factor of safety of 3. Take SPT value at the bottom of pile 40. Sand y = 17.0 kN/m o' = 31° 8 m Sand 10 m Ysat = 19.0 kN/m³ O' = 33° Figure - 1
A rectangular pile (0.5mx0.83m) is driven in a clayey soil arrangement composed of two different layers. The first layer has a height of 5m, cohesion of 58 kPa, friction factor of 0.84. Second layer has a height of 8m, cohesion of 76 kPa, and friction factor of 0.84. Compute the allowable load that the pile can carry if the factor it safety is 2.79.
exampley Determine the ultimate load of closed ended pipe pile using the Static load test data of the fable below. Use Davission's and 10% relative settlement criteria. The outside diameter and total of the pile is 355 mm Length is 8.24 m. The steel cross sectional 200 GPa for area is 136.8 cm². use Young's medulur. 1472 40t 535 669 803 936 10 701204-1328 Axia/loade 268 (KM) Settlement o 9.1 37 49 65 891 141 280, 645