Piles are needed to support columns in a high rise building at a particular site. The probability of failure of a pile due to excessive axial load is estimated to be 10 Suppose that four soch piles are required under each colunas and there are 20 identical columns in the filding Assume that the failure of piles are statistically independent of mach other. (a) What is the probability that none of the piles under a column foundation will fail (b) What is the probability that none of the columns in a building will staffer damage due to p pile failure?

Q: he soil profile and soil properties at a site are shown in the table below. A group of 12 concrete…

A: Given data : Number of Piles : 12 3 x 4 matrix L = 12m D = 0.45m Pile spacing 1.5m   S = 3D =…

Q: A hammer pile driver has a hammer with mass of 700 kilograms. It falls onto the top of a…

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Q: slipping when it makes an angle of 60 degree from the horizontal, determine the tension of the cord…

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Q: A wooden pile is driven with a drop hammer weighing 20 kN and in the second trial it was driven with…

A: Gjj

Q: Calculate the load bearing capacity of the pile shown in Figure Q5. Assume that it is a bored pile,…

A: Given, L = 18.5 m B = 0.60 m

Q: A 250 mm square, 15mm long prestressed concrete pile (fc = 40 mpa) was driven at a site in Amsterdam…

A: Calculate the Modulus of Elasticity for concrete with 28 days compressive strength of 40 Mpa…

Q: Question 3 A nine-pile group arranged in a square pattern is used as a foundation for a column in…

A: Given- 9-pile group arranged in a square pattern, Foundation in sand, Diameter d=300 mm=0.3 m,…

Q: A group of piles are arranged as shown in the figure. The piles are square in section with sides…

A: Given Side of pile (S) =400 mm = 0.4 m  Spacing between the piles = 1.8 m  Length of pile (L) =18 m…

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

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Q: Discuss in your own words with the help of diagram, the load transfer mechanism in skin…

A: Skin Resistance End bearing piles-In three types of piles the actedload is transfered to the soil…

Q: A wooden pile is driven with a drop hammer weighing 20 kN and in the second trial it was driven with…

A:

Q: 9.5 Following is the variation of Ngo with depth in a granular soil deposit. A concrete pile 9 m…

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Q: A static load test has been conducted on a 60 ft long, 16-in square reinforced concrete pile which…

A: Given settlement at head (ẟ1) = 1.211 in  settlement at A (ẟA) = 1.166 in  settlement at B (ẟB) =…

Q: For the group of piles shown in Figure 2, determine the safe length of piles.

A: To determine- Safe length of the pile.

Q: With aid of annotated sketch or diagram, discuss the following: I. Concrete pile II. Steel piles…

A: The various types of piles depending on materials used for piling: Concrete piles steel piles…

Q: In Hiley’s formula for driven piles i.e. R=E/(s+0.5c), why is a coefficient of 0.5 applied for the…

A: Answer Hilley's Formula is based on the principle of energy of conservation.

Q: QUESTION 3: Three forces act on a pile as shown. If the resultant of the three forces is equal to…

A: An arrangement of forces have been given and it has been asked to determine missing force and its…

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: concrete pile 20 m long and weighs 8.65 kN/m lies on the ground. It will be picked up at pick up…

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Q: c) Several different items are used in the design and construction of piles, including: i)…

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Q: What is the ultimate capacity in kN of the pile group shown in the figure assuming the group to fail…

A: Given- Cohesion- C=40 kN/m2,L=10 m,d=0.4 m,

Q: Sand falls into a conical pile at the rate of 10 cu. ft. per min. The radius of the base of the pile…

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Q: A static load test has been conducted on a 60 ft long, 16 in square reinforced concrete pile which…

A: Solution: Given Data Load at head = 139,220 lb  settlement at head = 1.211 settlement of telltale…

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: A drop hammer is used to drive a wooden pile The hammer weight is 25 N and its free falling height…

A:

Q: USING PORTAL METHOD, DETERMINE THE FORCES AND MOMENTS AT EACH MEMBER.

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Q: Discuss in your own words with the help of diagram, the load transfer mechanism in skin…

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Q: A square pile group of 16 piles penetrates through a filled up soil of 3 m depth. The pile diameter…

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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: Discuss in your own words with the help of diagram, the load transfer mechanism in skin…

A:

Q: C Q- A concrete pile has size 40 cm x 40 cm, ultimate load carrying capacity of pile is 1200 kN, x…

A: Given- Concrete size- 0.40 m×0.40 m Ultimate load carrying capacity Qup=1200 kN. C=50 kN/m2, ∝=0.6

Q: n to the soil as shown below. Calcu

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Q: Briefly explain the types of failures in pile groups.

A: Pile foundations are among the most common alternatives for heavy-duty constructions and those with…

Q: Two different single acting hammers are being considered for an open- ended pipe pile. Hammer A has…

A: Given data: Hammer A weight (WA) = 30kN height of fall (hA)= 3m Hammer B weight (WB) = 15kN height…

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…