How does the effective stress method is considered superior from the total stress method for studying the load-support capacity of piles?

Q: With the lambda analysis, why does the tip bearing capacity for long piles typically is neglected?

A: The bearing of a pile is given by,

Q: (i) What are the components of elastic settlement of piles? Name two parameters that affect the…

A: Note: Hi! Thank you for the question As per the honour code, We’ll answer the first question since…

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: What are the head details of H-piles under compression and subject to bending moment?

A: In question head details of H piles are to determined which is under compression and subjected to…

Q: Question 73/75 Static axial compressive pile load test shall be in accordance with what standard?…

A: Static axial compressive pile load test shall be in accordance with what standard?   The answer is…

Q: Wlur will be the load carying capacity (N) of a group of 6 piles, if the individual load carrying…

A:

Q: Which one is a better choice, a large diameter piles or a system of several smallerpiles with the…

A: Piles plays pivotal role in stabilizing the superstructure. These are embedded vertically down into…

Q: O Calculate Lateral movement and Maximum moment of a 12" by 12" precast concrete single pile which…

A: Given: ϕ = 32o B = 12 in For sand: λ=1 For square section: R1 = 1.7 ε50=0.002

Q: What are the head details of H-piles under compression and subject to bending moment? a7

A: The universal bearing pile is characterized by having equal flange and web thickness while universal…

Q: A precast concrete pile of size 30 x 30 is driven by a 300 kg drop hammer with a height of fall of…

A:

Q: A concrete pile of 45 cm diameter was driven into sand to medium density to a depth of 15m. The…

A: The ultimate capacity is calculated as: Qu=Qb+Qf Qu=qoAbNq+qo'AsKs tanδ

Q: Two identical concrete piles having the plan dimensions 50cm x 50cm are driven into a homogeneous…

A: Given- Identical concrete piles. plan dimensions 50 cm×50 cm.Nq=24 for φ=30o,   It is needed to find…

Q: Why there is need of pressure piles?

A: Answer Pressure pile used in the foundation engineering under following condition given in step 2

Q: Problem 3: You have been assigned to check the geotechnical capacity of a concrete pile foundation…

A: Given, End bearing resistance (Qp) = 3000 kN Total factored ULS load = 2210 kN

Q: exampley Determine the ultimate load of closed ended pipe pile using the Static load test data of…

A:

Q: Design a precast concrete pile subjected to an uplift load of 500 kN and a moment of 50 kNm. Use M30…

A:

Q: What is Conventional static pile load tests?

A: Answer The pile load test is basically used to determine the bearing capacity of the pile. The pile…

Q: Compute the compressive force at the most stressed pile for each pile cap given in the table below.…

A: Weight of pile cap = 3.6*3.6*0.4*25 = 129.6 kN.                                = 3.6*3.0*0.4*25 =…

Q: If the deformation (permissible precipitation in the piles is 0.005m / kip according to the…

A:

Q: What are Compression piles ? Explain the purpose & uses of Compression piles ?

A: Compression Pile :These are the piles that are acted upon by compression loads and they carry the…

Q: What are the methods of increasing the lateral resistance in piles.

A: The resistance caused on piles due to lateral load is known as lateral resistance. It is the sum of…

Q: A concrete pile of size 50 cm x 50 cm is to be provided in a clay stratum vhose unconfined…

A: Size = o.4mx0.4m load = 450  UCS unconfined compressive strength = 110kpa Hence c = 110/2 = 55…

Q: Calculate uplift pressure at key points of the pile of the structures shown in fig.

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Q: When designing shallow foundations, we add the weight of the foundation to the applied column load .…

A: Equation (1) The bearing pressure along the bottom of a shallow foundation is : q = P + WfA - uD…

Q: A 15 m long Douglas fir pile with a head diameter of 250 mm will be subjected to a compressive load…

A: Check the axial stresses fu≤Fu ....... (1) Here, fu is the average normal stress caused by axil load…

Q: The load-settlement curves shown in Figure 2 were obtained from a full-scale static load tests on a…

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: 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: Describe the factors of safety for design of piles.

A: Answer IntroductionA pile foundation is a cylindrical structural member made of concrete, steel, and…

Q: Compute the maximum allowable compressive load that a steel pipe pile (Φ508mm, t=9.5mm). The yield…

A:

Q: What is the most common yield strength of steel used for steel piles?

A: Yield strength: It is defined as the maximum stress applied to material until before it changes to…

Q: The group efficiency factor for piles in saturated clay is low soon after driving, and increases…

A: Immediately after driving, the pile load is resisted only by the small amount of end bearing areas,…

Q: What the advantages Left-in casings for mini-piles have ?

A: There are mainly two reasons to account for designing mini-piles as friction piles: (i) Due to its…

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: Q- The piles are classified according to the :method of transmission loads to

A: There are many different ways of classification of piles: Based on type of material Based on length…

Q: What are the primary advantages of using laterally loaded vertical piles instead of battered piles?

A: Introduction: Piles are used generally to transmit vertical loads and lateral loads to the…

Q: Discuss the categories of the loads acting on piles.

A: Answer The load has the following categories1- Axial Loads2- Lateral Loads

Q: A concrete pile of 45 cm diameter was driven into sand to medium density to a depth of 15m. The…

A: The allowable bearing capacity of pile is: Qu=Qb+Qf Qb=qoAbNq+qo'AsKs tanδqo=15×17.5=262.5…

Q: Explain how wave equation analysis combined with static or dynamic load tests can be used to…

A: The wave analysis process is very important to know the relation between the pile capacities and…

Q: What is composite piles?

A: Composite piles:

Q: State the method to determine the N-value of soil and the normal N-value required for supporting…

A: Concept- N-Value of the soil- It is a very important parameter for the determination of the shear…

Q: The total downward structural loads plus the weight of the mat is 25,000 k, and a conventional mat…

A: Consider the given data Total downward structural loads+weight of mat=25,000kFactor of…

Q: List the general types of pile drive hammers in use, and provide a brief description of the basic…

A: Pile Foundations are fitted with a special pile driving system known as a pile hammer. The hammer…

Q: eposit of medium sand with φ= 35° and ϒ = 19kn/m3. The water table lies at 2.0 m below ground level.…

A: According to given data  A concrete pile, 350 mm square, is driven into a thick deposit of medium…

Q: Q4: It is required to construct a pile foundation comprised of 25 piles arranged in 5 columns at…

A: Solution: Given that Total imposed load= 3000 kN The diameter and length= 50 cm and 12m The water…

Q: What is the value of negative skin friction for a group of 4 piles of 25 cm diameter, 6 m long and…

A: Given data- 4 piles of 25 cm diameter6 m long and spaced at 80 cm c/cundrained shear strength=25…

Q: An engineer is designing a deep foundation at a site underlain with loose to medium dense sandy silt…

A: The long circular section which is made up of hard material to carry loads and transfer it to hard…

Q: Why would it be inappropriate to design a drilled shaft using a static analysis method developed for…

A: Static analysis is used to figure out: A pile's or a pile collective's nominal resistance in…

Q: Identify the construction methods for helical piles.

A: piles are one of the best creations of civic industry and still, It is very useful in many aspects.…