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?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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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?

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