The following are the results of laboratory consolidation test conducted on clayey soil sample. Determine, graphically, the compression and recompression indices, Cc, Cr of this soil. Using Casagrande's method, determine graphically the preconsolidation pressure. 27 54 107 214 429 214 1.24 1.21 1.15 1.08 0.99 1.00

The following are the results of laboratory consolidation test conducted on clayey soil sample. Determine, graphically, the compression and recompression indices, Cc, Cr of this soil. Using Casagrande's method, determine graphically the preconsolidation pressure. 27 54 107 214 429 214 1.24 1.21 1.15 1.08 0.99 1.00

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: The results from a soil compaction test are shown in the table below. The solid grains of the soil…

Q: undrained triaxial test was conducted on a normally consolidated clay sample and the results are as…

Q: The following figure shows a uniformly distributed load applied at the ground surface. A sample was…

A: Plot the graph.

Q: The following data relate to a triaxial tests performed on a soil sample: Test No. Chamber Pressure…

A: Solution: Considering the values from the given table: 1. For sample 1: σ3=80 kN/m2σd=175 kN/m2u=45…

Q: Results from liquid and plastic limit tests conducted on a soil are given below. Liquid limit tests:…

Q: The results of two consolidated-drained test triaxial tests on a clay are given below: Specimen No.…

Q: The detailed results of a standard Proctor test on a soil classified as CL-ML and group name silty…

A: Given: Volume of Mould=130ft3 = 934.46 cm3 Weight of mould= 4.45 lb…

Q: The results of a constant head permeability test for a fine sand are as follows: Diameter of the…

A: solution For constant head permeability dia of sample d=33cm Area=π4d2=π4×332=855.3cm2Length of the…

Q: Subject: Soil Mechanics Please provide a solution and a diagram For a laboratory consolidation…

Q: The coefficient of permeability of a soil sample was found out in a soil mechanics laboratory by…

A: L=15cm To find coefficient of permeability

Q: Data from an oedometer test for a clay layer are plotted in the graph shown below. Calculate the…

A: An oedometer test was performed on a clay layer, from the data obtained. A semi-log graph between…

Q: Sand-cone equipment is used to determine an in-place unit weight (field density test) on a compacted…

A: Given data: Bulk density of soil γsoil=15.73 kN/m3Wet weight of soil sample (Wwet)=2100g =…

Q: A compression test is performed on a soil sample under drained condition. Determine the value of…

Q: 1. Sand cone equipment is used to determine an in-place unit weight (field density test) on a…

Q: FUNDAMENTALS OF GEOTECHNICAL ANALYSIS A constant head permeability test is performed on soil that…

Q: The results of a constant head permeability test for a fine sand are as follows: Diameter of the…

Q: Results from a liquid limit test conducted on a soil are given below. Number of blows, N 12 19 27 37…

A: From the liquid limit test, the observation is made of water content and the corresponding number of…

Q: 1.The velocity of water through the soil (apparent velocity) 2.Actual velocity/ Seepage velocity…

A: Given data : 1. Velocity of water collected V = 1508 cm2 2. Time taken t = 16 min = 16 × 60…

Q: pand cone equipment is Used to perform field density test on a compacted arth fill Soil sample dug…

A: Weight of soil=19.88N Weight of dry soil=17.92N

Q: Laboratory compaction test results on a clayey soil are listed in the table below. Moisture content…

Q: Results from a liquid limit test conducted on a soil are given below. Number of blows, N 12 19 27 37…

Q: A constant head permeability test is performed on soil that is 2 cm x 2 cm square, and 2.5cm long.…

Q: Following are the results from the liquid and plastic limit tests for a soil. Liquid limit test:…

Q: 6- For a falling-head permeability test, the following are given: • Length of soil specimen= 700 mm…

A: Given data in question Length 700mm Area 20 cm2 Area of Standpipe 1.05 cm2 Time 0 and 8 min Unit…

Q: Sand cone equipment is used to perform a field density test on a compacted earth fill. • Soil sample…

A: Given data in question Weight of soil sample dug out Weight of dried soil sample dug out Weight of…

Q: Sample of clay isotropically normally compressed to an all round effective pressure of 100 kPa and…

A: Given; Effective pressure = 100 kpa Effective isotropic pressure = 50 kpa Initially back pressure =…

Q: Soil

Q: A consolidated-undrained tri-axial test was conducted on a normally consolidated clay sample and the…

A: Step: 1 Friction angle: - It is a shear strength parameter and describes the shear resistance of…

Q: A series of direct shear tests were performed on a soil sample. Each test was carried out until the…

A: Given data-

Q: A sample of dry sand is subjected to a triaxial test. The angle of internal friction is 36°. If the…

Q: The following figure shows a uniformly distributed load applied at the ground surface. A sample was…

Q: A consolidated-undrained tri-axial test was conducted on a normally consolidated clay sample and the…

Q: The laboratory consolidation test is conducted on a clay sample. The following data results were…

A: Given data: P1 =55 kPa P2 = 130 kPa e1= 0.95 e2= 0.80 Thickness of the sample of clay= 35mm Time…

Concept explainers

Laboratory Determination of Hydraulic Conductivity

Hydraulic conductivity is the measure of flowability of water inside the soil in the presence of a hydraulic gradient. The hydraulic gradient is defined as the difference in the water heads in the soil, which induces a water motion. In simple terms, a hydraulic gradient is the presence of a potential that induces a flow of water.

Question

Part #2
The following are the results of laboratory
consolidation test conducted on clayey soil
sample. Determine, graphically, the compression
and recompression indices, Cc, Cr of this soil.
Using Casagrande's method, determine graphically
the preconsolidation pressure.
Effective Stress (kPa) Void Ratio (%)
27
1.24
1.21
1.15
1.08
0.99
1.00
1.01
1.02
54
107
214
429
214
107
54

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Introduction

VIEW

Step 2: Calculation

VIEW

Step 3: Casagrande method,

VIEW

Solution

VIEW

Step by step

Solved in 4 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Laboratory determination of hydraulic conductivity

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

PART IV: PERMEABILIT Y PROBLEM A For a constant head laboratory test on a fine sand, the following are the given values : • Length of the specimen • Di ameter of the specimen 14.0 inches 3.25 inches He ad difference 25.0 inches Water collected in 2.50 mins Void ratio A. Compute for the hydraulic conductivity of the soil in in/sec. B. Determine the discharge velocity through the soil in in/sec. c. Determine the seepage velocity in in/sec. 0.065 cubic inches 0.45
q.1Explain the stresses applied to the soil sample during the triaxial test. B) How do we apply confining pressure to the soil specimen during the triaxial test.?
A series of direct shear tests has been performed on a dense well-graded sand. All tests were performed on 3.00-in. diameter, 1.25 in. tall cylindrical samples, and were run slowly enough to produce drained conditions. The results of these tests are summarized in the following table: Test Number Normal Load (lb) Shear Load at Failure (lb) 1 100 84 2 200 159 3 400 319 Assuming the shear area remains constant during the test, determine the effective cohesion and effective friction angle from these test results. What values of these parameters would you expect? Are the test results consistent with your expectations? What values would you use for design?
Question 23 The results of a constant head permeability test for a fine sand are as follows: Diameter of the sample = 47 cm Length of sample = 57 cm Constant head difference = 29 cm Time of collection = 345 secs Weight of water collected = 429 grams Find the seepage velocity in cm/min. if the void ratio is 0.32. Round off to four decimal places.
4. The construction of a 10m x 10m square water tank in a residential neighbourhood has been planned. As indicated in Figure below, a 6m thick soft clay layer was discovered between sand layers during site exploration. For laboratory studies, an undisturbed soil sample was obtained in the middle of the soft clay layer. The findings of the laboratory consolidation test are listed below. Pressure, o' (kN/m2) | 25 50 100 200 400 800 Void Ratio, e 1.28 1.26 1.22 1.14 1.05 0.95 i. Find the preconsolidation pressure (o'c), Virgin, and Laboratory Compression Index using the information above (Cc). Find the primary consolidation settlements that will occur at the water tank's centre due to compression of the soft clay layer ii. 10 m Load = 18,000 kN Ground Level 1 m Ground water level Dense Sand, y= 20 kN/m³ 2 m Soft Clay Kat = 16 kN/m³ ; eo= 1.38 Cc = graph? ; Cs =Cc; o' = graph? 6 m %3D %3! Very Dense Sand
Consider that a 58.7 gram sample of dry soil is used in making a mechanical analysis by using the hydrometer method. The laboratory was held at a constant temperature of 20 C (68 F). The 40 s hydrometer reading was found to be 32.5 and the 8 hr hydrometer reading was 15.5. The percentage of sand in this soil sample is (note, a 58.7 gram sample is used here): Your Answer: Answer units
Sand cone equipment is used to perform a field density test on a compacted earth fill. • Soil sample dug from the test hole = 20.60 N • Dry weight of soil sample = 17.92 N Ottawa sand used to fill the hole weighs 16.05 N and is known to have a density of 15.74 kN/m3. Determine the in-place dry density of the tested soil. Answer:
The following data represent the results obtained from the specific gravity (S.G.) test performed in a soil laboratory including twenty sand samples. The value of mode is 2.65. * Specific Gravity Number of Samples 2.30-2.39 1 2.40-2.49 2.50-2.59 2.60-2.69 2.70-2.79 2.80-2.89 1 47
Following are the results of a field unit-weight determination test performed on the same soil by means of the sand cone method: -Calibrated dry unit weight of Ottawa sand = 15.4019 kn/m3 -Calibrated weight of Ottawa sand to fill the cone = 5.3496 N -Weightof jar + cone + sand (before use) = 74.451 N -Weightof jar + cone + sand (after use) = 46.886 N -Weight of moist soil from hole = 29.509 N -Moisture content of moist soil = 10.21% DETERMINE AND SHOW COMPLETE SOLUTION 1. Dry density of compaction in the field in kg/cu.m.
4) In a oedometer test a specimen of a saturated clay 21 mm thíck reaches 50% consolidation in 10 minutes. How long would it take a layer of this clay 6 m thíck under the same drainage conditions to reach 90% f consolidation under the same stress and drainage conditions? Use the following relationships between the average degree of consolidation, U and time factor, T,: U =T, for Us 50% U =1-- for U>50% No need for calculation, please write only the results.
Question 9 Three samples of loose sand were tested under consolidated undrained (CU) conditions. The failure stresses and excess pore water pressure for the soil sample is given below: Cell Pressure = 201 kPa Deviator Stress = 127 kPa Pore Water Pressure = 95 kPa Determine the drained angle of inclination of failure plane in degrees. Round off to two decimal places.
A consolidated undrained tri-axial test was conducted on a normally consolidated clay sample and the results are as follows: chamber confining pressure = 110kpa deviator stress at failure = 96kpa pore water pressure = 66kpa these test results were used to determine the drained friction angle of the soil. compute the deviator stress in (kpa) at failure when the drained test was conducted with the chamber confining pressure changed to 163kpa.