Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 11, Problem 11.3P
To determine
Find the height at which the concrete cube should be raised and dropped for densifying the granular soil of 10-m depth.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
As shown in the figure given below, a 5 m thick layer of silty sand overlies a clay layer 3 m in
thickness. Below the clay layer, there lies a 4 m thick gravelly sand layer underlain by pervious
bedrock. The ground water table is at the ground surface.
GWT
Silty Sand
5 m
Ya = 18 kN/m³
Ys = 19 kN/m3
Clay
1.5 m
3 m
Ys = 18 kN/m3
x A
Gravelly Sand
Ys = 20 kN/m3
2 m
4 m
x B
WXXX
a) Calculate the total stress (0), pore water pressure (u) and effective stress (o') at points "A"
and “B". Show your work and tabulate the results in the following form.
Point A
Point B
o (kPa)
u (kPa)
o' (kPa)
b) If ground water table is lowered by 2 m for foundation excavation purposes, calculate the
total stress, pore water pressure and effective stress at points "A" and "B" (i) immediately after,
(ii) long time after lowering the water table. Show your work and tabulate the results in the
following form.
The soil profile shown in the figure consist of a 9m layer of sand underlain by a 6m layer of clay. The location of water table is 3m from the ground level. The building to be constructed will cause an additional an additional pressure of 60 kPa on the ground. What is the primary settlement of the clay layer if:
a. Clay is normally consolidated
b. Preconsolidated pressure Pc=200 kPa
c. Preconsolidated pressure Pc= 160 kPa
Please help me with homework help. I’m struggling and can’t find how to resolve this. Show all work so i may learn! Thank you!
Chapter 11 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
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
- From the figure shown 1. What is the equation in determining the equivalent coefficient of permeability in the horizontal direction. 2. What is the equivalent coefficient of permeability in the horizontal direction if each soil layer is 3 m. thick and has the given values of K1, K2, K3 and K4. 3. What is the total flow if iav = 0.70arrow_forwardSoil mechanicsarrow_forwardA structure is built on a normally consolidated clay of thickness of H(m), where H is the last digit of your student identity number (SID). If the last digit of your SID is zero, take H = 10m. The normally consolidated clay has a natural moisture content of 45% and a Liquid limit of 50%. Ground investigation results show that the clay is overlain by a 15m layer of sand, and the ground water table is at 10m below ground level. The submerged unit weight and bulk unit weight of the sand layer are 15 kN/m³ and 20 kN/m³ respectively. The vertical stress increase at the centre of the clay layer is 100kPa due to the weight of the structure. Calculate the settlement of the structure due to primary consolidation. Take G =2.7.arrow_forward
- I need help on this soil problem.Thank You Calculate the permeability, K, for Bay mud after solving the following equation (gw is the specific weight of water and mv is the volume compression coefficient, which is about 0.001 1/kPa for Bay mud). Keep track of unitsarrow_forwardA recently filled up fill was 10.54 m thick and its average void ration was 1.0. The fill was loaded on the surface by constructing an embankment covering a large area of the fill. Some months after the embankment was constructed, measurements of the fill indicated an average void of 0.8. Calculate the compression of the fill.arrow_forwardA glass container with pervious bottom containing fine sand in loose state (void ratio = 0.8) is subjected to hydrostatic pressure from underneath until quick condition occurs in the sand. If the specific gravity of sand particles = 2.65, area of cross-section of sand sample= 10 cm2 and height of sample = 10 cm, compute the head of water in cm required to cause quicksand condition. a.9.17 b.0.45 c.7.29 d.0.9arrow_forward
- X1arrow_forwardA soil profile is shown in the figure below. A uniformly distributed load, Ao ,is applied at the ground surface equal to 100 kPa. Ao 100 kN/m2 2m Yary = 14 kN/m Groundwater table 4 m Yuat18 kN/m Kat 19 kN/m Void ratio, e 0.8 35m LL 40 Sand Clay What is the settlement (in mm) of the clay layer caused by primary consolidation if the clay has a preconsolidation pressure of 200 kPa? Report your answer to the nearest whole number. О 38 O 68 O 190 O none of the abovearrow_forwardA container of volume 3 × 10-³ m³ weighs 10 N. Dry sand was poured to fill the container. The container and the sand together weighs 53 N. The porosity of the soil will be (Take G₂ = 2.7, Y = 9.81 kNm/³)arrow_forward
- SITUATION 4: As soil profile shown below. The sand above the ground water table is dry. Other data pertaining to the table as follows: H₁ 4m, H₂= 3.2m, H₂ = 1marrow_forwarda) What are the typical permeability values for clay and sand, respectively? Discuss how the pore pressure in these soils would respond to loading, make use of schematic drawings when needed. b) A sample of silty clay is compacted into a mould 150 mm in diameter and 120 mm high. The mass of soil is 3.527 kg which reduces to 2.594 kg after drying in an oven. Calculate the bulk unit weight of the soil sample. Assuming the specific gravity of the soil grains, Gs = 2.72, calculate the degree of saturation and voids ratio of the soll. c) A site investigation is carried out in Northampton Square for a proposed five storey building. The ground is found to comprise 2 m of coarse gravel overlying London Clay. The gravel has a Gs = 2.65 and a specific volume of 1.573. The clay has a bulk unit weight = 17.9 kN/m³ and a coefficient of earth pressure, Ko= 1.1. The water table is at a depth of 2 m below the ground surface (i.e. level with the top of the London Clay strata). Calculate the vertical…arrow_forwardShow solution. The answer must be 8.22 x10^-10 ft/secarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Fundamentals of Geotechnical Engineering (MindTap...Civil EngineeringISBN:9781305635180Author:Braja M. Das, Nagaratnam SivakuganPublisher:Cengage Learning
Principles of Geotechnical Engineering (MindTap C...Civil EngineeringISBN:9781305970939Author:Braja M. Das, Khaled SobhanPublisher:Cengage Learning
Principles of Foundation Engineering (MindTap Cou...Civil EngineeringISBN:9781305081550Author:Braja M. DasPublisher:Cengage Learning
Fundamentals of Geotechnical Engineering (MindTap...
Civil Engineering
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Cengage Learning
Principles of Geotechnical Engineering (MindTap C...
Civil Engineering
ISBN:9781305970939
Author:Braja M. Das, Khaled Sobhan
Publisher:Cengage Learning
Principles of Foundation Engineering (MindTap Cou...
Civil Engineering
ISBN:9781305081550
Author:Braja M. Das
Publisher:Cengage Learning