The sample soil from a barangay in Baguio City was used in laboratory test toidentify the requests of the client. The client requires classifying the soil according to: (a)USDA textural classification; and Engineering Behavior Classification by (b) AASHTO, and(c) USCS. The results of the two tests are as follows:A. The mechanical analysis test results of a 500g (no waste) sample specimen ofthe soil is given in the table below.ASTMOpeningMass of SoilOpeningDiameter500 µm1 mm2.0 mm4.75 mmASTMMass of SoilSieve No.DiameterRetained, gSieve No.Retained, g2 um6 µm20 um75 μm250 µm425 µm5351505181301010652003542019.0 mm50.80 m60453/4 in40252 inB. The Atterberg Limit Tests identified that the Plastic Limit of the sample is 11% andthe data for the Liquid Limit test are given below.MoistureContent, %36.5Number ofBlows, N162032.52827

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Answered: USDA textural classification; and…

USDA textural classification; and Engineering Behavior Classification by (b) AASHTO, and (c) USCS. The results of the two tests are as follows:

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 2.1CTP: Three groups of students from the Geotechnical Engineering class collected soil-aggregate samples...

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Three groups of students from the Geotechnical Engineering class collected soil-aggregate samples for laboratory testing from a recycled aggregate processing plant in Palm Beach County, Florida. Three samples, denoted by Soil A, Soil B, and Soil C, were collected from three locations of the aggregate stockpile, and sieve analyses were conducted (see Figure 2.35). (a) (b) Figure 2.35 (a) Soil-aggregate stockpile; (b) sieve analysis (Courtesy of Khaled Sobhan, Florida Atlantic University, Boca Raton, Florida) a. Determine the coefficient of uniformity and the coefficient of gradation for Soils A, B, and C. b. Which one is coarser: Soil A or Soil C? Justify your answer. c. Although the soils are obtained from the same stockpile, why are the curves so different? (Hint: Comment on particle segregation and representative field sampling.) d. Determine the percentages of gravel, sand and fines according to Unified Soil Classification System.
O H.W : Two samples of sand are mixed together and their grading is not within the standard limits as shown in the table below. The mixing ratio is 1:2 ratio (sand1:sand2). Answer the following: a) Is the mixture within the standard limits? b) What is the fineness modulus of the mixture? And what is the average size of its particles? The sum of the Accumulative percentages retained on the sieves of standard series (150, 300,600, 1.18, 2.36. 5 and up to largest sieve) used divided by 100. Sieve size (mm) 10 5 2.36 1.18 0.6 0.3 0.15 Sand (1) (% passing) 100 97 95 92 85 30 5 Sand (2) (%passing) 100 95 75 45 20 10 Standard limits 100 95-100 80-100 50-85 25-60 10-30 2-10
Calculate the AASHTO group index number of the following soil Liquid Limit = 36% Plastic Index = 14% Sieve analysis data: US Sieve Size % Passing No. 10 72 No. 40 61 No. 200 33
Do the following: a) Calculate the percent retained and percent passing each sieve, and graph the results on a semi-log graph (you may use the attached chart, or graph in Excel and include with your submission). Then, characterize the gradation of the material. b) Calculate the values of D10, D30, D60, Cu, and Cc c) If the LL is 48 and the PL is 26, determine the USCS classification of the soil, and state its suitability for the purpose stated in the scenario.
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SHOW ALL SOLUTIONS a. Effective size b. Uniformity Coefficient c. Coefficient of Gradation d. Sorting Coefficient e. Percent of gravel, sand, silt and clay of MIT f. Percent of gravel, sand, silt and clay of AASHTO g. Percent of gravel, sand, silt and clay of USDA h. Percent of gravel, sand, silt and clay of USCS
The sample soil from a barangay in Baguio City was used in laboratory test to identify the grain size distribution. The results of the mechanical analysis of the soil are as follows: A. Sieve analysis of a 500g (no waste) soil: Opening Mass of Soil Diameter Retained, g ASTM Sieve No. 2 in. 50.8 mm. % in. 19 mm. 10 4 4.75 mm. 25 10 2 mm. 50 18 1 mm. 90 35 500 um. 130 250 um. 425 um. 75 um. 60 60 40 30 200 35 Pan B. Hydrometer analysis result (Sample soil taken from sieve analysis, retained in pan): Opening % Passing Diameter 20 μη. 6 um. 1.5 um. 9 Determine the following: Percent passing and Particle Size Distribution Curve Effective Size Coefficient of Gradation Coefficient of Uniformity and determine the grain size distribution according to: USDA System AASHTO System USCS System SAPIES VICAL
|Laboratory testing was performed on two soil samples (A and B). (a) Determine the USCS classification symbol for Sample A. (b) Determine the AASHTO classification for Sample B. Sieve No. Sieve Opening (mm) A- Percent Passing B - Percent Passing 3 inch 76.2 100 1.5 inch 38.1 98 0.75 inch 19.1 96 4 4.75 77 100 10 2.00 96 20 0.85 55 94 40 0.425 73 100 0.15 30 200 0.075 18 55 Liquid Limit 32 52 Plastic Limit 25 32 A Silty Clay (CL) sample was extruded from a 6-inch long tube with a diameter of 2.83 inches and weighed 1.71 lbs. (a) Calculate the wet density of the CL sample. (b) A small piece of the CL sample had a wet weight of 140.9 grams and a weight of 85.2 grams after drying. Compute the water content. (c) Compute the dry density of the CL sample A Standard Proctor test was performed on a soil with a specific gravity of 2.71. For the water content and wet soil unit weight in the following table: a) Plot the moisture-dry unit weight curve b) Find the maximum dry density and optimum…
Table 1 shows the result of the sieve analysis for the material of asphalt concrete (AC) mixture. Analyze the result of the sieve analysis by plotting the gradation curve of the sample. Conclude either the sample that been sieve is fulfill the requirement or not? Q4. Table 1 Sieve size (mm) Mass retained (g) Gradation limit for AC 14 20.0 0.00 100 14.0 69.60 90- 100 10.0 296.10 76- 86 5.00 433.70 50 - 62 3.35 170.50 40 - 54 1.18 321.20 18 - 34 0.425 212.00 12 - 24 0.150 135.10 6- 14 0.075 49.30 4-8 PAN 72.80
7-briefly discusses benefits of soil compaction 8-briefly discuss ownership and operating cost and explain unit cost determination 9-define the soil stabilization , list two kinds of stabilization briefly explain soil lime stabilization