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9. A wet sample weighs 100 g was dried up in the oven. The dry weight-80 g, then its moisture content is a) b) c) d) 80% 20% 25% none of the above (10 points) 10. The rock quality designation (RQD) is calculated by a)Dividing the length of all retrieved rock pieces by length of rock core b) Diiding the total length of all rock pieces 4" and longer by the length of the rock core c) Dividing the total length of all rock pieces 4" and longer by the length of a peanut d) None of the above (10 points) Sample A has D1o-0.2, D30-0.45 and Deo 0.9, Sample A is considered a) Uniformly graded b) Poorly graded c Gap graded d) Well graded (10 points) 12. Calculate the permeability, k, in cm/sec of a fully saturated soil sample having a water flow of Q-40cm3, a length of L 12 cm and a cross sectional area of A -25 cm2 with a drop of height H-20 cm in 240 seconds (20 points) For a clay soil with a dry density of 16.5 kN/m" and a moisture content of 22%. Calculate the saturated unit weight of the sample. (y sat)?

Answer 1