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) 67 23.3 46.6 44.6 132.3 133 213 369 Draw a graph for shear stress at failure against the normal stress and determine the drained angle of friction from the graph. 234t D Ceng age Leaming 2014

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 10.24CTP
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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
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.
© Ceng age Leaming 2014
Transcribed Image Text: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 23.3 133 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. © Ceng age Leaming 2014
12.5 Repeat Problem 12.4 with the following data. Given: Specimen diameter =
50 mm; specimen height = 25 mm.
Normal
Shear force at
Test no.
force (N)
fallure (N)
250
139
2
375
209
3
450
250
4
540
300|
© Cengage Learning 201 4
Transcribed Image Text:12.5 Repeat Problem 12.4 with the following data. Given: Specimen diameter = 50 mm; specimen height = 25 mm. Normal Shear force at Test no. force (N) fallure (N) 250 139 2 375 209 3 450 250 4 540 300| © Cengage Learning 201 4
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