A dilatometer test was conducted in a sand deposit atadepth of 6 m. The groundwater table was located at a depthof 2 m below the ground surface. Given, for the sand:3.29- 14.5 kN/m3 and Yat 19.8 kN/m3. The contact stressduring the test was 260 kN/m2. Estimate the soil frictionangle, ф".

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Answered: A dilatometer test was conducted in a…

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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Two similar clay soil samples were pre-consolidated in triaxial equipment with a chamber pressure of 600 kN/m². Consolidated-drained triaxial tests were conducted on these two specimens. The following are the results of the tests: Specimen 1: Specimen 2: kN 0; = 100 m2 kN 0; = 50 m? (Ao,),= kN 410.6- ,kN (Ao.), = 384.37- m Shear stress KN/m? Normal stress 50 100 434.37 510.6 kN/m2 Find the values of the cohesion e and the angle of internal friction p.
A saturated clay sample is tested using unconsolidated undrained test with confining pressure equal to 90 kPa and the added axial stress is 150 kPa. Determine the cohesion of soil. Note: For saturated clay under UU test the angle of internal friction is zero
A consolidated-drained tri-axial test was conducted on a normally consolidated clay. The results are as follows: O3 = 150 kN/m? (Aoa)f= 130 kN/m? Determine a. Angle of friction, o' b. Angle 0 that the failure plane makes with the major principal plane c. Find the normal stress o' and the shear stress tf on the failure plane d. Determine the effective normal stress on the plane of maximum shear stress
Q11: A silty sand of density index (ID or Dr) = 59% was subjected to standard penetration tests at a depth of 3 m. Groundwater level occurred at a depth of 1.5 m below the surface of the soil which was saturated throughout and had a unit weight of 19.3 kN/m³. The average N count was 15. During calibration of the test equipment, the energy applied to the top of the driving rods was measured as 350 Joules. Determine the (N₁) 60 value for the soil.
Soil Mechanism
A sample of dry sand in relatively loose condi-tion is subject to a triaxial test. The sample failswhen the confining stress (minor principalstress) is 50 kPa and the axial stress (major prin-cipal stress) is 170 kPa. What is the angle ofinternal friction for the soil?
In a drained triaxial test on consolidated clay the stress and angle are as follows: Deviator stress is 20 lb/in2 and friction angle is 21°. Calculate the effective confining pressure at failure.? a) 21 lb/in2 b) 22.2 lb/in2 c) 25.4 lb/in 2 d) 17.9 lb/in2

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A dilatometer test was conducted in a sand deposit ata depth of 6 m. The groundwater table was located at a depth of 2 m below the ground surface. Given, for the sand: 3.29 - 14.5 kN/m3 and Yat 19.8 kN/m3. The contact stress during the test was 260 kN/m2. Estimate the soil friction angle, ф".