An 18" square solid concrete pile is driven with an impact hammer to a depth of 55ft below grade into the soil conditions below. Calculate the (Qultimate) and (Qallowable) assuming a FOS of 2, assume groundwater is at the surface. Show all work use Alpha and Meyerhof methods.

An 18" square solid concrete pile is driven with an impact hammer to a depth of 55ft below grade into the soil conditions below. Calculate the (Qultimate) and (Qallowable) assuming a FOS of 2, assume groundwater is at the surface. Show all work use Alpha and Meyerhof methods.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: A pre-cast wooden pile is being driven with 50 kN drop hammer having a free fall of 100 cm.…

A: Drop hammer weight W=50 kN, Free fall H=100 cm, Penetration S=0.45 cm,

Q: A wooden pile is being driven with a drop hammer weighing 20 kN and having a free fall of 1.0m. The…

A: Weight of drop hammer = 20 kNFree fall = 1.0 mPenetratiin in last blow = 5 mmTo Find :Load carrying…

Q: The following scenario might result in pile damage during installation: Hard ground layer within the…

A: Pile installation: For driven pile installation, the precast pile may get damaged in the hard ground…

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: Confirm the validity of statements by writing (T) otherwise write (F) and gave your opinion for it.…

A: Answer: Given statement is False (F)

Q: When we classify the piles in accordance to the type of loading, then we may call it as: *End…

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

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: Compare features of cast in place piles:a)Constructed by a driven steel shell with concrete…

A: Cast in-situ pile:Cast-in-place (Cast-in-situ) piles are those piles that are cast in position…

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

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

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…

Concept explainers

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.

Question

5. An 18" square solid concrete pile is driven with an impact hammer to a depth of 55ft
below grade into the soil conditions below. Calculate the (Qultimate) and (Qallowable)
assuming a FOS of 2, assume groundwater is at the surface. Show all work use Alpha and
Meyerhof methods.
Oft
NC Clay
Ysat = 135 pcf
c = Su = 900psf
55ft
Sand
Kat = 130 pcf
Phi = 38deg
80ft
6. All things being equal for the above problem use the Coyle and Castello method and find
(Qultimate) and (Qallowable)

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: Answer

VIEW

Step 2:

VIEW

Step 3:

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 1 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

Describe the feature of the installation procedure for a driven pile.
The Young’s modulus of the concrete of the piles is 75.8 GPa and the concrete unit weight is 25 kN/m3. If the hammer strikes the pile at 3 m/s, and the pile cushion has the same cross-sectional area of the pile with a modulus of 2×105 kPa and a unit weight of 7 kN/m3, complete the wave equation analysis of the pile after one impact. Set the problem up in an Excel spreadsheet to carry the calculations until the movement of the pile stabilizes. Plot the displacement of the pile versus time. Note, when calculating the pile spring only, assume an element length of 4 m. This is still long but using the actual element length will make your constant too small, impacting the damping. Note that if using software elements would be less than 1 m.
1. A twelve-story condominium is planned for construction on the Gulf Coast. The foundation for the building is to be friction piles (no end bearing). A prestressed concrete fabrication facility is within 30 miles of the project (i.e. use square prestressed concrete piles). If the bottom floor interior column loads are 500 tons and pile groups are not to exceed eight, determine the cross- sectional dimensions and length of piles required to support the interior column loads using a factor of safety of 3. Assume the piles have a center-to-center spacing such that the group efficiency is 1.0. (i.e. disregard whether or not the pile group acts as a block). NO cross-sectional dimension should exceed 24 inches. The piles are fully embedded in sand for which y = 118 lb/ft°, ø'= 32° and &' = 0.75ø' You need to fill in your answers in the table below. Include applicable units. Do not work the problem on this page. Type of pile to be used (i.e. material) Allowable load for pile group based on…
Which is the best reason for that the effects of pile installation cannot be calculated by the strict application of soil or rock mechanics theory A. The pile foundation is too deep; B. The pile foundation has skin friction resistance from the interface between soil and pile. C. The foundation soil is disturbed and impacted by pile construction operations. D. The pile bottom point bearing capacity is ignored.
5. Discuss five advantages of using large diameter bored piles compared to driven steel H-piles for supporting a tall building located in urban areas.
Referring to cast in place pile construction, produce a cause-and-effect analysis (fishbone) diagram, using the following factor groups: material, labor, equipment, and methods/procedures Identify detailed factors for each factor group that contribute to the occurrence of the identified quality problem.