Describe Mohar's theory of rupture
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Q: Describe Mohar’s theory of rupture
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- Three samples of Soil were collected during soil exploration for the construction of a Highrise Building. a) Choose the most appropriate Test to determine shear strength parameters for each of the sample described as under i) Saturated Plastic Clay ii) Well Graded Sand iii) Silty Clay b) Draw typical graph between shear stress and normal stress for each of the sample described as above.please help me... If a soil sample tested in a direct shear box of 60 mm by 60 mm and the maximum readings for normal loads of 0.3, 0.5 and 1.0kN were 202, 265 and 511 kN, determine the strength parameters corresponding to effective stress. Please find: 1) UU test; Unconsolidated Untrained (Q-test or quick test) 2) CD test; Consolidated Drained ( S-test or slow test) 3) CU test; Consolidated Untrained (R-test) 4) UC test; Unconfined Compression (σ_3=0) Thank you..Separate triaxial compression tests are wwwmmmmmmmmmm performed on identical soil samples. The soil is a saturated mixed soil . At failure, the respective minor and major principal stresses values are 20 kPa and 46 kPa for sample one and 40 kPa and 80 KPa for sample two. From these. data, determine the value for Ø and the cohesion intercept C on the Mohr's circle shear strength coordinate.
- A normally consolidated soil was subjected to tri-axial test with the following data: cell pressure= 320 kPa; The specimen failed when the deviator stress is 460 kPa. Compute the shear stress in kPa on the failure plane. Include fbd.24.A series of consolidated, undrained triaxial tests were carried out on specimens of asaturated clay under no backpressure. The test data at failure are summarized:Confiningpressure (kPa) Deviator stress(kPa) Pore waterpressure (kPa) 150 192 80300 341 154450 504 222 a. Draw the Mohr circles and find the cohesion and friction angles in terms of effectivestresses.b. Compute Skempton’s A- parameter at failure for all three specimens.c. Is the soil normally consolidated or over consolidated? Why?d. Another specimen of the same day that was consolidated under a cell pressure of 250 kPa wassubjected to a consolidated, drained tri axial test. What would be the deviator stress at failure?Separate triaxial compression tests are performed on identical soil samples. The soil is a saturated mixed soil. Both tests follow the procedure for consolidated–undrained conditions. At failure, the respective minor and major principal stress values are 20 kPa and 46 kPa for sample one and 40 kPa and 80 kPa for sample two. From these data, determine the value for fCU and the cohesion intercept c on the Mohr’s circle shear stress coordinate. (This problem can be solved graphically using the Mohr’s circle.)
- Q: Soil samples have been collected from a virgin ground and sent to a NATA accredited laboratory to determine shear strength parameters. The laboratory conducted direct shear test using 100 mm X 100 mm samples and returned the following test result. Test no. 1 2 Normal stress (kPa) 100 200 Shear stress at failure (kPa) 125 165 For the given soil, determine minor principal stress when major principal stress is are 400 kPa.A normally consolidated soil was subjected to tri-axial test with the following data: cell pressure= 320 kPa; The specimen failed when the deviator stress is 460 kPa. Compute the shear stress in kPa on the failure plane. Show diagramIn determining the effective stress parameters of a soil sample, which test is preferable, consolidated undrained test or consolidated drained test?
- If an unconfined compression test is performed on the same clayey soil as described in Problem 4 , what axial load can be expected at failure? problem 4: A cohesive soil sample is subjected to an unconfined compression test. The sample fails at a pressure of 3850 lb/ft2 [i.e., unconfined compressive strength lb/ft2]. Determine the soil’s cohesion.Q-4: Soil samples have been collected from a virgin ground and sent to a NATA accredited laboratory to determine shear strength parameters. The laboratory conducted direct shear test using 100 mm X 100 mm samples and returned the following test result. Test no. 1 2 Normal stress (kPa) 100 200 Shear stress at failure (kPa) 77.74 135.47 For the given soil, determine minor principal stress when major principal stress is are 450 kPa.Following are possible testing to determine the shear strength of clay in the laboratory, please choose the correct and appropriate combination for lab testing. I. Direct shear test II. Unconfined Compressive Strength III. Vane Shear test IV. Standard Penetration Test V. Consolidated Isotropic Drained triaxial test VI. Dutch Cone penetrometer O All above O 1,1Il and II O 1,1II and VI O IV, V, VI