A plastic limit test has been performed on a soil. Threads of the soil that broke at a diameter of 1/8 in. were collected for a moisture content test, which yield the following results: Mass of soil + can before placing in oven 41.30 g Mass of soil + can after removal from oven 37.40 g Mass of can 22.20 g Compute the plastic limit of the soil. Express it in percentage (input the numerical value only without including the % sign).

QUESTION 2 a. The results given in Table 1 were obtained in a particle size distribution test for soil sample received in the laboratory. Table 1 US Sieve No. Size Opening(mm) Weight Retained(g) 4 4.75 0 10 2.0 18.5 20 0.85 53.2 40 0.425 90.5 60 0.25 81.8 100 0.150 92.2 200 0.075 58.5 Pan - 26.5i. Determine the percentage passing each sieve and plot the particle size distribution curve. ii. How much fine-grained soils are in the sample ? iii. Determine the amount of gravel and sand in the sample ? iv. Determine D10, D30, and D60 from the grain-size distribution curve. v. Calculate the uniformity coefficient, Cu. vi. Calculate the coefficient of gradation, Cc. vii. Describe the gradation curve (eg poorly graded)

EXERCICE 4 Sieve analysis was performed from which the results were summarized in the following table. 1 a) Plot the grain size curve b) Calculate the coefficient of uniformity and the coefficient of gradation. c) Give a first idea about the classification of such soil. U.S. Sieve Opening (mm) Mass retained in each sieve (gr) 1 20 4 4.750 10 2.000 40 20 0.850 60 40 0.425 89 60 0.250 140 80 0.180 122 100 0.150 210 200 0.075 56 Pan 12

A natural soil deposit is to be used for a geotechnical engineering project. Laboratory test results indicate that the soil possesses liquid and plastic limits of LL = 30% and PL = 22%, respectively. In addition, the sieve analysis has produced the following information: • % Passing Sieve No. 4 (4.75 mm) % Passing Sieve No. 200 (75 μm) • Coefficient of Uniformity C₁ 100% 8% 1.590 0.012 Coefficient of Curvature Co (a) Determine the soil's classification in accordance with the Unified Soil Classification System (USCS). (b) To further improve the soil's shear strength performance, the natural soil deposit (possessing an in- situ water content of w = 14%) was compacted in-situ and has achieved a saturation degree of S = 85%. If the specific gravity of soil solids is G, = 2.6, determine the soil's dry and bulk unit weights (ya and y) in its current compacted state.

In a sieve analysis test, 95.5% of the sample is passing the 5mm sieve and 5.13% is passing sieve #200, which of the following is correct about this sample: There is no clay in the sample   the percent of silt and clay is: 5.13%    There is 4.5% Sand and Gravel in the sample   95.5% of the sample is Sand and Silt

Someone can help me with this one please.   Following are the results of a shrinkage limit test:

Subject soil Mechanics

Someone can help me with this one. Please

SG is 2.66 and temperature is 18 degrees celcius

1.4 A test for the relative density of soil in place was performed by digging a small hole in the soil. The volume of the hole was 400 ml and the moist weight of the excavated soil was 9 N. after oven drying, the weight was 7.8 N. Of the dried soil, 4N was poured into a vessel in a very loose state, and its volume was found to be 270 ml. The same weight of soil when vibrated and compacted had a volume of 200 ml. Determine the relative density.