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A University of Technology, Sydney Faculty of Engineering 48360 Geotechnical Engineering QUIZ 1 Time Allowed: 40 min Name: Student number: Circle only one letter associated with the correct answer: Mass (g) Vol. (cm 3 ) Air 0 40 Water 60 60 Solids 530 200 Total 590 300 Q1. Use the above table provided for a soil sample to find the dry density of the soil: a. 1.77 t/m 3 b. 1.97 g/cm 3 c. 1.87 g/cm 3 d. 2.65 t/m 3 e. 1.60 t/m 3 Q2. According to a staged drained triaxial test on a sand sample, the effective friction angle of the soil was determined to be equal to 30 ° . If the deviator stress was 120 kPa in the sample at failure, what would be the value of the effective cell pressure? a. 50 kPa b. 160 kPa c. 60 kPa d. 100 kPa e. 180 kPa Q3. What is the minimum size of gravel and sand according to the Australian Standards: a. 60 μ m , 2 μ m b. 2 mm , 60 μ m c. 60 mm , 2 mm d. 60 mm , 60 μ m Q4. Soils deposited through human activities are called? a. Aeolian b. Glacial c. Colluvial d. Alluvial e. Fill Q5. A soil specimen has a total density of 1.9 t/m 3 and water content of 20%. Determine the dry unit weight of the soil in kN/m 3 .
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