1. From the given soil samples below, (a) compute the effective size, uniformity coefficient, and coefficient of gradation (b) Determine the percent of gravel, sand, silt and clay of soil A using AASHTO Sieve size. 0.425 0.033 0.018 0.01 0.0062 0.0035 0.0018 0.001 Soil A Passing Finer (%) 100 90 80 70 60 50 40 35

1. From the given soil samples below, (a) compute the effective size, uniformity coefficient, and coefficient of gradation (b) Determine the percent of gravel, sand, silt and clay of soil A using AASHTO Sieve size. 0.425 0.033 0.018 0.01 0.0062 0.0035 0.0018 0.001 Soil A Passing Finer (%) 100 90 80 70 60 50 40 35

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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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 -…
Determine the percentage of Silts and Clays based on USCS for the grain-size characteristics of a soil are given as follows: Round off your answer to two (2) decimal places. Size (mm) Percent Finer 0.850 100.00 0.425 92.10 0.250 85.80 0.150 77.30 0.075 62.00 0.040 50.80 0.020 41.00 0.010 34.30 0.006 29.00 0.002 23.00
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 .
Determine the percentage of Clays based on AASHTO Soil classification system for the grain-size characteristics of a soil are given as follows: Round off your answer to two (2) decimal places. Size (mm) Percent Finer 0.850 100.00 0.425 92.10 0.250 85.80 0.150 77.30 0.075 62.00 0.040 50.80 0.020 41.00 0.010 34.30 0.006 29.00 0.002 23.00
The water content of a soil sample is 5.8%. The dry unit weight is = 16.2 kN/m3 and Gs = 2.7. How much isthe void space in a soil sample most nearly made up of water?
A soil sample has a unit weight of 1.9 g/cc and w=12%. If Gs of solids is 2.65, determine the volume of water in cm3. a.0.377 b.0.212 c.0.12 d.0.092
Undisturbed soil obtained from a test pit 0.0283 m3 (1 ft3) in volume is found to have a wet weight of 0.459 kN (103.2 lb). The dry weight of the sample is 0.376 kN (84.5 lb). What would be the effective unit weight of such a soil if it were submerged below the groundwater table? The specific gravity of the soil is determined to be 2.70.
Subject :Geotechnical engineering Here's the problem For a soil, suppose that D10=0.08mm,D30=0.22mm and D60=0.41mm.calculate the uniformly coefficient and the coefficient of gradation
15. The following are results of a field unit weight determination test using sand cone method: Volume of hole = 0.0018 m3 Mass of moist soil from hole = 3.44 kg Water content = 12.30% Max. dry unit weight from a laboratory compaction test = 19.94 kN/m3 Determine the relative compaction, in percent. Round off to two decimal places. Hint: Relative compaction = Field dry unit weight / Max dry unit weight (lab)
Soil samples A and B have void ratios of 0.5 and 0.7 respectively. If 1.5 m³ of soil sample A and 1.7 m³ of soil sample B are mixed to form sample Chaving a volume of 3.2 m³, which one of the following correctly represents the porosity of sample C? ⚫ (a) 0.375 (b) 0.60 (c) 1.66 (d) 2.66 [CSE: 2002]
1. Why will bulk density vary between soils but it is valid to use a constant value for particle density (2.65 g cm-3)?
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