Analyze each statement (A and B) whether they are true or false. Use the choices below in answering each item; A statement A is true B statement B is true C both A and B are true D neither A nor B are true (A) 50 g soil is suspended in a liter aqueous solution, the hydrometer reading at t=0 is 40. (B) In sedimentation analysis, sand settles first, followed by silt, and clay particles settle last.

Analyze each statement (A and B) whether they are true or false. Use the choices below in answering each item; A statement A is true B statement B is true C both A and B are true D neither A nor B are true (A) 50 g soil is suspended in a liter aqueous solution, the hydrometer reading at t=0 is 40. (B) In sedimentation analysis, sand settles first, followed by silt, and clay particles settle last.

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter2: Origin Of Soil And Grain Size

Section: Chapter Questions

Problem 2.15P: Repeat Problem 2.14 with the following values: Gs = 2.75, temperature of water = 21C, t = 88 min,...

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Please answer all 1. List the three corrections which should be applied to the hydrometer readings. 2. Why is it important to remove the hydrometer from the measuring cylinder between readings? 3. A hydrometer test has the following results; Gs = 2.70, temperature = 240C, and L = 92 mm at 60 minutes after the start of sedimentation. Calculate the diameter of the smallest-size particles that have settled beyond the zone of measurement at that time (use the table in the lab manual to find, A=0.0128). D(mm) = A sqrt( L(cm) / t(min) )
Analyze each statement (A and B) whether they are true or false. Use the choices below in answering each item; A statement A is true B statement B is true C both A and B are true D neither A nor B are true (A) As the soil becomes compacted, both bulk density and particle density increase. (B) Porosity is inversely proportional to bulk density, meaning as bulk density increases percent porosity decreases, and vice versa.
Calculate the arithmetic average and thickness-weighted average oil saturation. SAMPLE THICKNESS , h Oil Saturation, % 1 2 75 2 3.5 74 3 1 73 4 4 76 5 2 75 6 2 72
Repeat Problem 2.14 with the following values: Gs = 2.75, temperature of water = 21C, t = 88 min, and L = 11.7 cm. 2.14 A hydrometer test has the following result: Gs = 2.65, temperature of water = 26 C, and L = 10.4 cm at 45 minutes after the start of sedimentation (see Figure 2.25). What is the diameter D of the smallest-size particles that have settled beyond the zone of measurement at that time (that is, t = 45 min)? Figure 2.25 ASTM 152H type of hydrometer placed inside the sedimentation cylinder (Courtesy of Khaled Sobhan, Florida Atlantic University, Boca Raton, Florida)
Repeat Problem 2.4 with the following data. 2.4 The following are the results of a sieve analysis. a. Determine the percent finer than each sieve and plot a grain-size distribution curve. b. Determine D10, D30, and D60 for each soil. c. Calculate the uniformity coefficient Cu. d. Calculate the coefficient of gradation Cc.
Determine the moisture content, the moisture content by dry weight per trial based on the table below. Description Trial 1 Trial 2 Trail 3 Trial 4 Weight of empty aluminum dish (g) 38.1151 38.1474 38.9473 38.7400 Weight of aluminum dish and soil sample (g) 90.1440 85.7554 86.6980 85.1235 Weight of aluminum dish and dry soil 67.0170 64.1915 65.1110 63.8859 Then calculate the mean, sd, and rsd of the measurements.
A liquid limit test on a clay was performed with the following results. The natural water content of the clay is 38% and plastic limit is 21%. Number of Blows 6 12 20 28 32 Water content (%) 52.5 47.1 42.3 38.6 37.5 What is the liquid limit of this clay? (Use Interpolation) Group of answer choices 39.85% 39.99% 36.74% 38.63% Please answer this asap for upvote. Thanks
Analyze each statement (A and B) whether they are true or false. Use the choices below in answering each item; A statement A is true B statement B is true C both A and B are true D neither A nor B are true (A) Organic soils have lower particle density and mineral soil have higher particle density (B) Agricultural soils typically have a particle density of 26500 kg/m3
The soil sample presented in Figure below is under constant head permeability test. The soil is consist of a silty sand (SM) with k = 5×10-3cm/s and specific gravity of 2.70. The soil is fully saturated and its moisture content is determined to be 18.5%. Determine the time required for the plug of colored water to pass through the soil (i.e., from when the leading edge first enters the soil to when it begins to exit). Use seepage velocity for your calculation.
A large laboratory has four types of devices used to determine the pH of soil samples. The laboratory wants to determine whether there are differences in the average readings given by these devices. The lab uses 24 soil samples having known pH in the study and randomly assigns six of the samples to each device. The soil samples are tested, and the response recorded for each sample is the difference between the pH reading of the device and the known pH of the soil. These values, along with summary statistics, are given in the following table. SampleDevice 1 2 3 4 5 6A -0.307 -0.294 0.079 0.019 -0.136 -0.324B -0.176 0.125 -0.013 0.082 0.091 0.459C 0.137 -0.063 0.240 -0.050 0.318 0.154D -0.042 0.690 0.201 0.166 0.219 0.407 a. Based on your intuition, is there evidence to indicate any difference among the mean differences in pH readings for the four devices b. Run an analysis of variance to confirm or reject your conclusion in part (a). Use α = 0.05
A liquid limit test on a clay was performed with the following results. The natural water content of the clay is 38% and plastic limit is 21%. Number of Blows 6 12 20 28 32 Water content (%) 52.5 47.1 42.3 38.6 37.5 What is the plasticity index of this clay? (Use Interpolation) Group of answer choices 15.74% 18.99% 18.85% 17.63% Please answer this asap for upvote. thanks
- Find the moisture content, using dry weight per trial based on the table. - Solve the mean, sd, and rsd of the measurements. Description Trial 1 Trial 2 Trial 3 Trial 4 Weight of empty watch glass (g) 38.1151 38.1474 38.9473 38.7400 Weight of watch glass and soil sample (g) 90.1440 85.7554 86.6980 85.1235 Weight of watch glass and dry soil 67.0170 64.1915 65.1110 63.8859