Please answer 12.6 12.4 The following are the results of four drained direct shear tests on undisturbed nor-mally consolidated clay samples having a diameter of 50 mm. and height of 25 mm.NormalShear force atTest no.force (N)fallure (N)16723.3213346.6321344.64369132.3Draw a graph for shear stress at failure against the normal stress and determinethe drained angle of friction from the graph.12.5 Repeat Problem 12.4 with the following data. Given: Specimen diameter =50 mm; specimen height = 25 mm.Shear force atNormalforce (N)Test no.fallure (N)2501393752093450250454030012 4Cenga ge Learning 2014Cen gage Learning 2014 12.6 Consider the clay soil in Problem 12.5. If a drained triaxial test is conducted onthe same soil with a chamber confining pressure of 208 kN/m?, what would be thedeviator stress at failure?

It is required to determine the normal stress. σ'=Normal forceArea=250 Nπ4×50 mm2=0.127 MPa It is…

Answered: Consider the clay soil in Problem 12.5.…

Consider the clay soil in Problem 12.5. If a drained triaxial test is conducted on the same soil with a chamber confining pressure of 208 kN/m², what would be the deviator stress at failure?

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter10: Shear Strength Of Soil

Section: Chapter Questions

Problem 10.9P

See similar textbooks

Related questions

Q: A cylindrical sample of soil, having cohesion of 0.8 kg/cm2 and angle of internal friction of 200,…

A: The angle of failure plane with respect to vertical axis is given by: θ=90o-(45o+ϕ2)Where,ϕ = Angle…

Q: A clay sample was consolidated in a triaxial cell under a backpressure of 50 kPa and cell pressure…

A: SKEMPTON PARAMETER B: IT IS DEFINED AS THE RATIO OF CHANGE IN PORE PRESSURE TO THE CHANGE IN CELL…

Q: Q2: Available field data indicate that the permeability for the clay is varies with depth. For layer…

A: Equivalent permeability for flow parallel kx=kx1H1+kx2H2+kx3H3H…

Q: In a direct shear test, a soil sample failed at sigma 3 =150 kN/m2 and sigma 1 =3338 kN/m2. If the…

Q: Example 3 The equation of effective stress failure envelope for normally consolidated clayey soil is…

Q: During a constant head permeability test on a sand sample, 260 x 10^3 mm^3 of water were collected…

A: Given data: Volume of water collected: V=260×103 mm3 Time (t)= 2 minutes. Length of sample(L)=100…

Q: A constant-head test was conducted on a sample of soil 15 cm long and 60 cm2 in cross-sectional…

A: 1. The discharge in the soil is given by,

Q: Q6: A saturated clay sample was consolidated in the triaxial cell under a cell pressure of 150 KN/m.…

Q: A dry cohesionless soil was tested in a tri-axial setup. If the angle of shearing resistance and…

Q: 2. A well with a diam. of 0.6 m. is constructed in a confined aquifer as shown. The sand aquifer has…

Q: The following readings (Table 1) were taken for an increment of vertical stress of 50 kPa in an…

Q: 6. Water is flowing at the rate of 0.045 ml/sec in an upward direction through a sandy soil whose…

Q: A 3m thick layer of saturated clay (two-way drainage) under a surcharge loading underwent 90%…

Q: A site associated with an excavation project is underlain by a 6m thick sand layer with unit weights…

A: Time factor T is calculated as ; T = Cv td2 where ; Cv = Coefficient of consolidation = 0.018 m2…

Q: A soil undergoes friaxial compression with a radial stress of 200 kPa and a deviator stress of 325…

Q: In a proctor test, the soil specimen of one of the observations had a bulk density of 19 KN/m^3 with…

A: Given data, Moisture Content (w) = 15% Bulk density = 19 KN/m³ Specific Gravity (Gs) = 2.7 To…

Q: 12.4 During a subsoil exploration program, undisturbed normally consolidated silty clay samples were…

A: Given data: Normally consolidated silty caly. Test no Normal force (N) Shear force (N) 1 84…

Q: test on an undisturbed soil sample. Represent the data by a Mohr Circle and compute the direction of…

Q: A constant=head test was conducted on a sample of soil 15 cm long and 60 cm? in cross-sectional…

A: The given data is: Length of sample (L) = 15 cm Area of the sample (A) = 60 cm2 Quantity of water…

Q: A well with a diameter of 0.6 m is constructed in a confined aquifer. The sand aquifer has a uniform…

A: Permeability is is the access by which any liquid flowing through the rock or any material. An…

Q: The data from a falling head test on a silty clay are : Cross-sectional area= 80cm2, Length of soil…

Q: A soil of specific gravity 2.67 has a moisture content of 20% when fully saturated 2.0 cm thick…

A: Given, Fully saturated soil sample, Specific gravity of soil= 2.67 Moisture content, w= 20% Initial…

Q: The results of two drained triaxial tests on a saturated clay are given next: Specimen I: Chamber…

Q: A laterally confined cylindrical specimen of saturated soil failed under an axial vertical stress of…

Q: Following are the results of consolidated-undrained triaxial tests on undisturbed soils retrieved…

A: For the triaxial test the effective major and minor principal stresses at failure. Graphical…

Q: A constant head permeability test is carried out on a cylindrical sample of sand 10 cm diameter and…

Q: Following are the results of four drained, direct shear tests conducted on the clay samples with…

Q: A cylindrical sample of soil having a cohesion of 80 kN/m2 and an angle of internal friction of 20°…

Q: A drained triaxial test on a normally consolidated clay showed that the failure plane makes an angle…

Q: By considering the failure surfaces in a vane shear test, show from the first principles that, for a…

A: Draw vane shear test apparatus and shear stress distribution:

Q: Example 3 The equation of effective stress failure envelope for normally consolidated clayey soil is…

Q: A clay sample was consolidated in a triaxial cell under a backpressure of 50 kPa and cell pressure…

A: Solution: Skempton Parameter B:It is defined as change in pore pressure to the change in cell…

Q: A gravity well penetrates 27 meters below the static water table. After 24 hours of pumping at a…

A: d=27m Q=75L/s

Q: A sandy soil has a drained angle of friction of 38°. In a drained triaxial test on the same soil,…

Q: Question Attached

A: In a consolidated drained triaxial test, drainage is allowed, mohr's failure envelope passes through…

Q: In a drained triaxial compression test, a sample of sand fails at deviator stress of 150kPa under…

Q: A sandy soil has a drained angle of friction of 38degrees. In a drained triaxial test on the same…

Q: Find the hydraulic conductivity for the soil if the results of a constant head permeability test for…

Q: Three CU tri-axial tests were performed oa samples retrieved from a 4-meter-thick layer of saturated…

A: we know that for normally consolidated CU test cohesion will be zero, but here pore water pressure…

Q: 1.In an oedometer test a specimen of saturated clay 19 mm thick reaches 50% consolidation in 20 min.…

Q: 2- During a point load test on 5 cm diameter rock sample ,the failure at P-50 KN ,The point load…

A: Point load test : The Point load test (PLT) is an accepted rock mechanics testing procedure used for…

Q: b) For a normally consolidated clay, given o = 20° and ø' = 28°. If a CU triaxial test is conducted…

Q: b) The results of two drained triaxial tests on a saturated clay are given here: Specimen I: Chamber…

A: Given: Results of drained triaxial test on two specimens of soil Specimen 1: Confining pressure =…

Q: PROBLEM 2: During a constant-head permeability test on a sand sample, 260 x 10° mm of water were…

Q: Q: The results of two drained triaxial tests on a saturated clay follow: Specimen I: 03=70 kN/m2…

A: Cohesion will be zero in drained saturated case.

Q: Water is flowing at the rate of 0.045 ml/sec in an upward direction through a sandy soil whose…

Q: The data presented in Fig. 8.15b are for a black fissured organic silty clay or clayey silt. At a…

A: The value of undrained Young's modulus for medium stiff clay is calculated as, Eu=40×101.3 kPa=4052…

Q: Q2: A cylindrical rock sample with a radius of 4 cm and a height of 15 cm and a total weight of 1300…

A: Solution: Given Data: Radius r=4 cmDiameter D=8 cmHeight H=15 cmTotal weight W=1300 gmWater…

Q: Data and Results for Direct Shear Test: Normal Stress (kPa): 100; 200; 300 Shear Stress (kPa):…

Q: Question 7 Identify the rock quality for the rock recovery shown in the Figure. Poor Good Very poor…

A: As the recovery of rock pieces are more at bottom and less on top the rock is fair.

Question

Please answer 12.6

12.4 The following are the results of four drained direct shear tests on undisturbed nor-
mally consolidated clay samples having a diameter of 50 mm. and height of 25 mm.
Normal
Shear force at
Test no.
force (N)
fallure (N)
1
67
23.3
2
133
46.6
3
213
44.6
4
369
132.3
Draw a graph for shear stress at failure against the normal stress and determine
the drained angle of friction from the graph.
12.5 Repeat Problem 12.4 with the following data. Given: Specimen diameter =
50 mm; specimen height = 25 mm.
Shear force at
Normal
force (N)
Test no.
fallure (N)
250
139
375
209
3
450
250
4
540
300
12 4
Cenga ge Learning 2014
Cen gage Learning 2014

12.6 Consider the clay soil in Problem 12.5. If a drained triaxial test is conducted on
the same soil with a chamber confining pressure of 208 kN/m?, what would be the
deviator stress at failure?

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

Step 2

Step 3

Step 4

Step 5

Trending now

This is a popular solution!

Step by step

Solved in 5 steps

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

Refer to the constant-head permeability test arrangement in a two-layered soil as shown in Figure 8.2. During the test, it was seen that when a constant head of h1= 200 mm was maintained, the magnitude of h2 was 80 mm. If k1is 0.004 cm/sec, determine the value of k2 given H1 = 100 mm and H2 = 150 mm.
Refer to Figure 7.24. The following data were collected during the field permeability measurement of a confined aquifer using a pumping test. Determine the hydraulic conductivity of the permeable layer. Use Eq. (7.49). Thickness of the aquifer, H = 4.5 m Piezometric level and radial distance of the first observation well: h1 = 2.9 m; r1 = 17.8 m Piezometric level and radial distance of the second observation well: h2 = 1.8 m; r2 = 8.1 m Rate of discharge from pumping, q = 0.5 m3/min
Following are the results of consolidated-undrained triaxial tests on undisturbed soils retrieved from a 4-m thick saturated clay layer in the field (sat = 20.7 kN/m3). a. Estimate graphically the Mohr-Coulomb shear strength parameters c' and '. b. Estimate the shear strength in the middle of the clay layer.
The data from a falling head test on a silty clay are : Cross-sectional area= 80cm2, Length of soil = 10 cm, initial head= 90cm, Final head=84cm, Duration of test= 15mins, Diameter of tube= 6mm, Temperature= 22°C. Determine k in cm/s.
In a sample of sand, water seeps at a volume of 158 cm3 in 7.89 minutes. If the seepage area and thickness of the specimen are 69 cm2 and 0.628 m, respectively, what is the permeability coefficient? The water has a head of 34 cm.
In a drained triaxial test on consolidated clay the stress and angle are as follows: Deviator stress is 20 1b/in2 and friction angle is 210 . Calculate the effective confining pressure at failure.? A) 21 1b/in2 B) 22.2 1b/in2 C) 25.4 1b/in2 D) 17.9 1b/in2
A cylindrical sample of soil having a cohesion of 80 kN/m2 and an angle of internal friction of 20°is subjected to a cell pressure of 100 kN/m2. Determine the maximum deviator stress at which the sample will fail in kPa. Show diagram
During a constant head permeability test on a sand sample, 260 x 10^3 mm^3 of water were collected in 2 minutes. If the sample had a length of 100 mm, a diameter of 40 mm and a maintained head of 200 mm. What is the coefficient of permeability in mm/s?
A cylindrical sample of soil having a cohesion of 80 kN/m2 and an angle of internal friction of 20° is subjected to a cell pressure of 100 kN/m2. Determine the angle made by the failure plane with the axis of the sample.
A drained triaxial test on a normally consolidated clay showed that the failure plane makes an angle of 58° with the horizontal. If the sample was tested with a chamber confining pressure of 103.5 kN/m^2, what was the major principal stress at failure?
A cylindrical sample of soil, having cohesion of 0.8 kg/cm2 and angle of internal friction of 200, is subjected to a cell pressure (σ3) of 1.0 kg/cm2. Calculate the maximum deviator stress at which the sample will fail.
In laboratory consolidation tests on a clay specimen (drained on both sides), the following results were obtained:• thickness of clay layer = 25 mm• σ'1 = 50 kN/m2 , e1 = 0.75• σ'2 = 100 kN/m2 , e2 = 0.61• time for 50% consolidation (t50) = 3.1 minDetermine the hydraulic conductivity of the clay for the loading range.