a) [20 points] You are given the sieve analysis and plasticity results for two soils in the following table. Classify the two soils according the USCS. If you need to plot grain size distribution curves, use the attached sheet. Briefly show the steps you followed to come up with the classification and provide the USCS symbol and name of the soil type. (10 pts each soil - 7 pts symbol and 3 pts the name) b) [10 points] What is the percent gravel and percent sand for soils A and B? Percent Finer (%) Soil B Shar U.S. Sieve No. Opening (mm) Soil A 3/4 19 100 4 4.75 90 10 2 77 20 0.85 64 40 0.425 60 60 0.25 56 100 0.15 45 77 200 0.075 40 73 LL 30 47 PL 15 41

% Finer • Particle size analyses were carried out on two soils-Soil A and Soil B-and the particle size distribution curves are shown in Figure 100 90 80 70 60 50 40 30 Clay 20 10 0 0.001 + Silt 0.01 Soil A Sand Soil B 0.1 1 Particle size (mm) - log scale Gravel 10 Soil A LL 26 (oven-dried; assume same for not dried) B Nonplastic 1. Which of the two soils, in your opinion, is a better material for the core of a rolled earth dam? PL 18

The result of sieve analysis of three soils is given next. It is required to classify these soils according to the AASHTO Classification System. Use the attached AASHTO Classification of Highway Subgrade Materials Table. Sieve Analysis Sieve Diameter, Percent Passing Number mm. A В C 4 4.76 2.38 90 100 100 8 84 90 100 10 2 72 77 98 20 0.84 66 59 91 40 0.42 58 50 85 60 0.25 50 42 79 100 0.149 44 36 70 200 0.074 38 33 63 LL 42 46 47 PL 23 29 24 What is the classification of Soil A? What is the classification of Soil B? What is the classification of Soil C? EDI

Given the following Sieve Analysis and Atterberg limits results. Answer the following questions: 1- What is the effective diameter of this soil? 2- Calculate the uniformity coefficient and coefficient of gradation 3- Determine the percentage of Gravel, Sand, Fine soils according to USCS. 4- Classify the soil using AASHTO (with GI) & USCS (with group name). Diameter Sieve # % Passing 100 (тm) 90 4 4.75 96 80 3.35 90 70 10 78.8 60 20 0.85 56.8 50 40 0.425 37.8 40 60 0.25 23.6 30 100 0.15 13 20 200 0.075 4.6 10 Рan LL 10 10 0.1 0.01 Diameter PL 5 Percent Passing (%) 2.

C 1. Sieve analysis data for two inorganic soils are provided in Table 1. Soil 1 has LL = 60 and PL = 36. Soil 2 has LL = 23 and PL =15. To plot the particle size distribution curves for Soils 1 and 2 using the attached sheet. Determine the effective grain size, D10 for Soil 2. Determine the USCS designation for each soil. List step by step how you make your choices. Table 1. Sieve Analysis Data. Mesh Sieve No. 4 10 20 40 60 100 200 opening (mm) 4.750 2.000 0.850 0.425 0.250 0.150 0.075 Soil 1 % finer 100 100 98 93 88 83 77 Soil 2 % finer 100 90 64 38 29 21 11 % Finer 120 100 80 60 40 20 II 1 11 10 T+4- I I J FT T I 1 Bullie aller 1 1 1 TEE J 1 I 01: 1 H I I F + +4 F T LLU 1 L 1 1 4 II FT 7 LI 1 TT IT 1 1 31 11 1 LI J-L IT J { LIL II 1 1 rt II I T LI L 11 J J FIL I 31 I I 1 I B 1 1 T r T 1 CA J <-+ I 1 Particle Size Distribution 1 I THE SE DET L II LL t FT4 JII 1 1 1 1 Fr-r 7 1 J Lead L 1 I T I P E S I - 1 1 I E T I Particle size (mm) II LL 1 T E T TH 0.1 J J E IF LIL II F 1 1 T J II T…

The questions are in the pictures , Solve question 2 and 3. Show your solutions pls

4.16 Plot the particle size distribution curve for each of the three soils the data for which are given below. All three curves should be on the same semi logarithmic diagram. Sieve Number 3/4 in ½ in #4 # 10 # 20 # 40 # 60 # 100 # 200 Particle Diameter from Hydrometer Analysis (mm) Lagoon Clay Beufort, SC 0.045 0.010 0.005 0.001 Data from Sowers (1979). 100 100 100 100 100 100 100 95 80 61 42 37 27 % Passing by Weight Beach Sand Daytona Beach, FL 100 100 100 100 100 98 90 10 2 Weathered Tuff Central America 100 98 95 93 88 82 75 72 68 66 33 21 10 4.17 Determine Cu and Ce for each of the three soils in Problem 4.17. Which of these soils is most well-graded? Why?

4.16 Plot the particle size distribution curve for each of the three soils the data for which are given below. All three curves should be on the same semi logarithmic diagram. Sieve Number 3/4 in ½ in #4 # 10 # 20 # 40 # 60 # 100 # 200 Particle Diameter from Hydrometer Analysis (mm) Lagoon Clay Beufort, SC 0.045 0.010 0.005 0.001 Data from Sowers (1979). 100 100 100 100 100 100 100 95 80 61 42 37 27 % Passing by Weight Beach Sand Daytona Beach, FL 100 100 100 100 100 98 90 10 2 Weathered Tuff Central America 100 98 95 93 88 82 75 72 68 66 33 21 10 4.17 Determine Cu and Cc for each of the three soils in Problem 4.17. Which of these soils is most well-grazied? Why?

Percent Passing (by weight) You are provided the mechanical sieve/hydrometer and Atterberg Limit test results for three soils, labeled as Soil #1, Soil #2, and Soil #3. The mechanical sieve results are shown in Figure 1, while Table 2 presents the Atterberg Limit test results. Classify the soils in accordance with the Unified Soil Classification System (USCS) and AASHTO. 100 90 80 60 50 40 30 20 10 0 0.0001 CLAY SIZE Soil #3 Soil #2 Soil #1 0.001 } Soil #1 #2 SILT SIZE #3 0.01 0.1 Grain Size (mm) Figure 1. Mechanical Sieve and Hydrometer Results for Problem #2. 0.075 mm Table 2. Atterberg Limits (ASTM D4318) for Problem #2. LL 68 39 SAND SIZE ΝΑ 1 PL 19 31 ΝΑ GRAVEL 10

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