Q 1/ The following table shows the standard proctor test for clay soil that required: Water 6 8. 10 12 14 16 18 20 22 content Mass of 1530 1607.4 1697.6 1775.6 1830 1902.8 1906.8 1904.24 1876.2 wet sample (g) If the specific gravity of soil was (2.73), Yw= 9.81 and the volume of mould = 944 cc: A) Finding the maximum dry unit weight of the compaction with the optimum moisture content. B) Calculate and then plot the dry unit weight with the optimum moisture

Q 1/ The following table shows the standard proctor test for clay soil that required: Water 6 8. 10 12 14 16 18 20 22 content Mass of 1530 1607.4 1697.6 1775.6 1830 1902.8 1906.8 1904.24 1876.2 wet sample (g) If the specific gravity of soil was (2.73), Yw= 9.81 and the volume of mould = 944 cc: A) Finding the maximum dry unit weight of the compaction with the optimum moisture content. B) Calculate and then plot the dry unit weight with the optimum moisture

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter2: Soil Deposits-origin, Grain-size, And Shape

Section: Chapter Questions

Problem 2.4P: For a soil, given: D10 = 0.08 mm D30 = 0.22 mm D60 = 0.41 mm Calculate the uniformity coefficient...

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For a soil, given e= 0.75, w= 22%, Gs= 2.66, calculate the dry density of soil in slug/ft3. Note ρ of water= 1.94 slug/ft3 a. 3.8 b. 2.95 c. 3.6 d. 2.85 With fbd if necessary
For a soil, given: D10 = 0.08 mm D30 = 0.22 mm D60 = 0.41 mm Calculate the uniformity coefficient and the coefficient of gradation of the soil. 2.4 Repeat Problem 2.3 for the following: D10 = 0.24 mm D30 = 0.82 mm D60 = 1.81 mm
Calculate the coefficient of gradation, Cc. ? Classify the soil by AASHTO and USCS system. (LL = 30, PL = 10) ? Use this given M=Mass of soil retained in pan +∑Mass reatianed in each sieve⇒M=617 gM=Mass of soil retained in pan +∑Mass reatianed in each sieve⇒M=617 g Sieve No. Opening Size (mm) Mass retained (g) %Mass retained=MiM×100=MiM×100 %Cumulative mass retained % Finer 4 4.750 28 =28617×100%=4.54%=28617×100%=4.54% 4.54 95.46 10 2.0 42 =42617×100%=6.81%=42617×100%=6.81% 11.35 88.65 20 0.850 48 =48617×100%=7.78%=48617×100%=7.78% 19.13 80.87 40 0.425 128 =128617×100%=20.74%=128617×100%=20.74% 39.87 60.13 60 0.250 221 =221617×100%=35.82%=221617×100%=35.82% 75.69 24.31 100 0.150 86 =86617×100%=13.94%=86617×100%=13.94% 89.63 10.37 200 0.075 40 =40617×100%=6.48%=40617×100%=6.48% 96.11 3.89 Pan 24 =24617×100%=3.89%=24617×100%=3.89% 100 0 Now, to plot the GSD curve, the % finer is kept on the vertical axis and the opening size are kept on the horizontal axis -…
Calculate the CEC (m.e./100g soil) using the following given miliequivalent weights obtained from a 25g soil sample (a. Ca++= 2.23 m.e; b. Mg++=1.32 m.e.; c. Na+= 1.98 m.e.; d. K+= 1.87 m.e.; e. H+= 1.27 m.e.; f. Al+++= 0.11 m.e.; g. NH4+= 2.3 m.e.; h. NO3-= 1.5 m.e.
For a soil, given e= 0.75, w= 22%, Gs= 2.66, calculate the moist unit weight of soil in KN/m3. a.18.91 b.14.91 c.78.03 d.94.85
Calculate the Gs of soil sample - Mass of empty clean pycnometer= 41.76 gm Mass of empty clean pycnometer + dry soil = 67.52 gm Mass of pycnometer + dry soil + water = 157.62 gm Mass of pycnometer + water =? Gs =? Write your comment about types of soil according to the result of Gs .
A sample of soil having a mass of 360 g is to be placed into a cylinder whose volume is 750 cm³. An additional volume of 573 cm³ of water is required to fill the container with moisture content = 22.5% and GS = 2.60. 1. Compute the bulk unit weight. a. 6.16 kN/m³ b. 16.25 kN/m³ c. 18.19 kN/m³ d. 19.95 kN/m³ 2. Compute the submerged unit weight. a. 8.17 kN/m³ b. 9.42 kN/m³ c. 10.02 kN/m³ d. 12.18 kN/m³ 3. Compute the porosity. a. 0.56 b. 0.46 c. 0.36 d. 0.26
For a soil, given e= 0.75, w= 22%, Gs= 2.66, calculate the degree of saturation. a.14.91 b.78.03 c.18.91 d.94.85
The moist unit weights and degrees of saturation of a soil are given in the table. y (kN/m3) S(%) 16.62 50 17.71 75 Determine: a. e b. Gs Show handwritten solutions.
Calculate % Silt using the following values; a. Weight of soil= 50 g b. HR reading at 40 sec.= 25 c. Temp at 40 sec= 25 oCd. HR at 2 hrs= 16 e. Temp at 2 hrs= 26 * A. 17.28 B. 17.25 C 17.22 D. 17.19
A soil has an “in-situ” (in-place) voids ratio e0 = 1.87, ωN = 60%, and GS = 2.75. Note: All soils are really “moist” except when dry, that is when ω= 0%. 1. What is moist unit weight, ɣ(moist)? a. 20.15 kN/m³ b. 15.04 kN/m³ c. 25.05 kN/m³ d. 13.23 kN/m³ 2. What is degree of saturation, S? a. 75.14% b. 95.35% c. 67.08% d. 88.24%
Q 03: (a) Draw graph (using graph paper or excel) for soil 1 and 2 given in problem 2 and paste it in the following?(b) Calculate D10 D30 and D60 for Sieve Analysis plot in section (a) and calculate Coefficient of Uniformity and Coefficient of curvature for both soils. Also comment if the soils are well graded or poorly graded and which soil is better graded in comparing to other in case of soil 1 and 2.