A soil sample has a liquidity index of0.29, a plastic limit of 12.2%., and aplasticity index of 16.37.. Specific gravityand the void ratio are equal to 2.7 and0.G0 respectively.17 Compute the water contentG) 17.85b)16.76c) 18.38J)IS.992-) Compute the degree of Saturationc:) 66.14) 57.90b) 73J) I5.443.) Determinethe dry unit weight at zeroair void in KN mo2) 17.3 2b.) 19. 76C:) 16.18d.)18.24

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Answered: A Soil sample has a liquidity index of…

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter3: Natural Soil Deposits And Subsoil Exploration

Section: Chapter Questions

Problem 3.26P

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In a consolidation test the following data was obtained: Void ratio of the soil = 0.75; Specific gravity of the soil = 2.62; Compression Index = 0.1. The thickness of the compressible soil is 3 m. The increase in pressure at the center of the layer is 60 kN/m2. The preconsolidation pressure is 50 kN/m2. If the coefficient of consolidation is 2 × 10^–7 m2/s, determine the time in days for 90% consolidation. Assume one-way drainage. a. 333 b. 442 c. 346 d. 426 e. 342
HI PLEASE HELP. NEED ASAP. COMPLETE SOLUTION. SOIL MECHANICS.A soil excavated from a borrow pit has an in place dry unit weight of 18.51 kN/cu.m. In the lab, the values of dry max and min unit weights are 20.79kN/cu.m and 14.16 kN/cu.m respectively.DETERMINE THE FF: A. Compute the relative density of the soil samplein percent. B.Compute the void ratio in the natural condition if emax=0.921and emin=0.289. C.Compute the specific gravity of the soil.
An undisturbed soil sample, 100 mm in diameter and 200 mm high, was tested in a triaxial machine. The sample failed at an additional axial load of 3 kN with a vertical deformation of 20 mm. The failure plane was inclined at 50° to the horizontal and the cell pressure was 300 kN/m2, Determine, from Mohr’s circle, the angle of friction . show fbd a.18 b.14 c.12 d.10
For a falling head permeability test, the following are given: length of specimen is 360 mm, area of specimen is 70 cm2 , and hydraulic conductivity of soil specimen is 0.165 cm/min. what should be the area of the stand pipe for the head to drop from 700cm to 360cm in 7 mins? compute the seepage velocity under the test condition if the soil specimen has a void ratio of 0.55 in cm/sec compute the head difference at time equal to 5 minutes?
FUNDAMENTALS OF GEOTECHNICAL ANALYSIS A constant head permeability test is performed on soil that is 2 cm x 2 cm square, and 2.5cm long. The head difference applied during the test is 20 cm and 7 cm3 is collected over a time of 100 sec. Provide step by step solution. a) Compute the permeability based on these test conditions and results. b) A falling head test is conducted on the same soil specimen at the same time (t1 – t2 = 100 sec), and the standpipe diameter is 0.8 cm. If the average head during the test should be 18 cm, what are h1 and h2 values?
Compute the cohesion of the clay. The results of a three consolidated undrained tri-axial tests on a saturated clay are as follows : a. 10.45 kPab. 12.25 kPac. 11.62 kPad. 15.62 kPa
Water flows at the rate of 0.09 ml/s in an upward direction through a sand sample with a coefficient of permeability of 2.7 × 10^–2 mm/s. The thickness of the sample is 120 mm and the area of cross-section is 5400 mm2. Taking the saturated unit weight of the sand as 18.9 kN/m3, determine the effective pressure in Pa at the bottom of the sample. a. 364 b. 728 c. 182 d. 910
For a laboratory consolidation test on a clay specimen (drained on both sides) the following results were obtained: Thickness of clay soil= 25 mm; P_1 = 50 kPa; P_2 = 120 kPa; e_1 = 0.92; e_2 = 0.78; Time for 50% consolidation= 2.5 min. Tv = 0.197. Determine the coefficient of compressibility in m2/kN. a.2.56 x 10^-2 b.1.081 x 10^-3 c.1.23 x10 ^-5 d.1.31 x 10^-7
A block of soil in a permeability test has a length of 120 mm and a cross-sectional area of 600 mm2. The water level at one end is 200 mm above a fixed datum and at the other end is 30 mm above the same plane. The flow rate was 2 ml in 90 seconds. Compute the coefficient of permeability of the soil in m/s. a.2.61 x 10-5 m/s b.0.98 x 10-5 m/s c.1.78 x 10-5 m/s d.3.97 x 10-5 m/s e.1.89 x 10-5 m/s
Water flows at the rate of 0.09 ml/s in an upward direction through a sand sample with a coefficient of permeability of 2.7 × 10^–2 mm/s. The thickness of the sample is 120mm and the area of cross-section is 5400 mm2. Taking the saturated unit weight of the sand as 18.9 kN/m3, determine the effective pressure in Pa at the middle of the sample. a. 364 b. 910 c. 182 d. 728
A certain saturated sand (S = 100,) has a moisture content of 25.1 percent and a specificgravity of solids of 2.68. It also has a maximum index void ratio of 0.84 and a minimum indexvoid ratio of 0.33. Compute its relative density and classify its consistency.
A block of soil in a permeability test has a length of 120 mm and a cross-sectional area of 600 mm². The water level at one end is 200 mm above a fixed datum and at the other end is 40 mm above the same plane. The flow rate was 2.5 ml in 95 seconds. compute the coefficient of permeability of the soil in m/s.

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