Sometimes pile driving contractors use predrilling when installing piles. This method consists of drilling a vertical hole that has a smaller diameter than the pile, then driving the pile into this hole. Could predrilling affect the side friction resistance? Why? Is the diameter of the predrill hole important? Why?

Q: the water table rises to the excavation depth

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

Q: embedded in the lakebed. The weight is released, falling along guide-rails to strike squarely atop…

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Q: Define The local availability of each pile type

A: Pile foundation : Pile foundation is defined as a series of columns constructed or inserted into the…

Q: Engineers have observed that the axial capacity of piles driven into saturated clay improves with…

A: During pile driving operation, the soil is disturbed which in-turn induces pore pressure due to…

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

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Q: What is the difference between “hammer efficiency” and “coefficient ofrestitution” when using…

A: Solution: Coefficient of restitution=-(v1-v2)/(u1-u2) whereu=initial velocityv=Final velocity…

Q: In what situation would the LTP be complemented by a pile cap?

A: A pile cap is a mat-like structure made of cement, sand and small scales. This mixture is placed in…

Q: What are the situations in pile supported and pile enhanced mats are used?

A: Piles foundation is used since olden times. It is a common type of foundation which is been used…

Q: Explain the symbols used for Pile Groups ?

A: Piles are vertical or slightly inclined, relatively slender structural foundation members. They…

Q: Provide sketches/illustrations of pile cap steel reinforcement for 1 pile to 4 pile? (Provide…

A: Here, It is asked to provide the sketches of pile cap steel reinforcement for 1 pile to 4 pile.

Q: Briefly discuss the function of pile foundation and why is normally used for huge civil engineering…

A: Foundation: The lowest part of a building or other civil structure that comes in direct touch with…

Q: kesulo em/sec what is rate seepage under shee t pile Sm 1.67 m 4m

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Q: Calculate the side resistance in kips using the US Army Corps of Engineers (EM 1110-2-2906, Figure…

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Q: c) Pile foundation design to Eurocode 7 offers a method of design using pile testing data, and an…

A: concept- Pile foundation- The base of the pile is a set of columns erected or laid out to transport…

Q: What are methods of pile driving ?

A: Methods  of pile driving ; (1) Pressing (2) Vibrodriving (3) Impact driving

Q: Calculate the side resistance in kips using the US Army Corps of Engineers (EM 1110-2-2906, Figure…

A: Given Data: Shear strength = 3752psf pile diameter = 14 in = 14/22ft = 1.167ft Length = 22ft

Q: A bored pile of 0.8 m in diameter is constructed in sand. Soil conditions and relevant soil…

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Q: Describe a typical structure and subsurface conditions where a pile supported or pile enhanced mat…

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Q: What does Instrumentation attached to a test pile for monitoring the behavior during or after…

A: Pile driving monitoring helps to determine the behavior of the pile while installation and confirms…

Q: 2. Three cast-in-place square piles with a side length of 700mm are installed under a certain…

A: Determine the properties of each soil layer. The properties of each soil layer are given in the…

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: Which of the following materials form flat pile? O a. Fine sand O b. Coarse sand O C. Angular…

A: Which of the following materials form flat pile? A. Fine sand  B. Coarse sand  C. Angular pebbles…

Q: (c) Under which conditions could a "block failure" mechanism provide a "reasonable" prediction for…

A: Required: To give explanation for following  (a) Under which conditions a block failure gives…

Q: Explain the role of geotechnical engineers in pile construction.

A: A geotechnical engineer tests the soil for various aspects of physical and index properties. The…

Q: Q 1. Which foundations are suitable to be constructed nearby water retaining structures e.g. dam's…

A: Caisson foundation is suitable to be constructed nearby water retaining structures .Caisson…

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: 2. Construct a bar chart to use in managing the construction of a single span bridge. The identified…

A: Given data,Drive piling west abutment (WA), 2 daysDrive piling east abutment (EA), 2 daysConstruct…

Q: Question- If the effective plan area of a warehouse is 54 sq m, and maximum height of piles…

A: given- Area of warehouse-A=54 m2maximum height of piles=270 cm

Q: What is 'negative skin friction' on pile and why does it causeconcern? How do you estimate its value…

A: Negative skin friction is the downward movement of surrounding soils relative to the piles. Negative…

Q: Find the best match between the 2 groups:   1. Drilled Piers 2. Drop Pile Hammer 3. Composite Pile…

A: The correct match is stated below.

Q: Many engineers believe the only disadvantage to overdesigning pile foundations is the additional…

A: Yes,  that's true. When a foundation is designed with higher factor of safety, it requires larger…

Q: Explain the design process of pile supported mats.

A: Question is based on the pile supported mat . In the question design process of mat foundation…

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

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Q: If the concrete cylinder is not completely submerged and the immersed weight (WI) is recorded, what…

A: 3.effects of immersed weight on unit weight that is recorded when concrete cylinder is not…

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: Does the moment induced in the pile increase or decrease as the water table continues to rise above…

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Q: thank you much. And if I need to calculate the loads on the piles under column C3 and select a…

A: For this problem, we have to find out design for column C-3

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

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Q: The Danish pile-driving formula is to be used for field control of a pile installation. Steel pipe…

A: Part a.

Q: How does the tensile stress (as well as compressive stress) may develop within the pile during…

A: Development of compressive and tesnile stresses during the process of pile driving:

Q: Define The durability of the pile material in a specific environment

A: Concrete's durability can be defined as its capacity to withstand abrasion, chemical attack, and…

Pricing Excavation and Backfill

Backfill, in construction, is the activity of returning the soil and gravel that are removed during building construction or using them again to toughen and support the foundation of the building or any other structural component.