Q2 The figure below gives the grain-size distribution of two soils. 100 Soil A 60 Soil B 40 1.0 0.1 0.01 0.001 Particle diameter (mm) – log scale The liquid and plastic limits of minus No. 40 sieve fraction of the soils are as folle Soil A Soil B Liquid limit 30 26 Plastic limit 22 20 Classify the soils according to USCS and ASTM-CS. 80 20 Percent finer

Q2 The figure below gives the grain-size distribution of two soils. 100 Soil A 60 Soil B 40 1.0 0.1 0.01 0.001 Particle diameter (mm) – log scale The liquid and plastic limits of minus No. 40 sieve fraction of the soils are as folle Soil A Soil B Liquid limit 30 26 Plastic limit 22 20 Classify the soils according to USCS and ASTM-CS. 80 20 Percent finer

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter4: Soil Classification

Section: Chapter Questions

Problem 4.1P: State whether the following are true or false. a. In the AASHTO classification Table 4.1, the soils...

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Grain size distributions curves are given for 9 soils in Figures 1, 2 and 3. The LiquidLimit and Plastic Limit for the fine-grained portion of these soils are given in Table 1.a) Classify the soils according to ASTM/USCS (i.e., give both the Group Symboland Group Name).b) It is proposed that Soil 3 (Figure 2) be used for a highway subgrade. What is theAASHTO soil classification for this soil (see classification table on the last page ofthis assignment)? What is this soil's general rating as a subgrade?
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.
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.
A soil sample has 98% passing the No. 4 sieve and 74% passing the No. 200 sleve. The LL for the soils 58% and the PI is 30%. Classify the soil according to the USCS. Show step by step solutions.
Afine-grainedsoilisfoundtohavealiquidlimitof70%andaplasticlimitof38%. (a) On the plasticity chart for the Unified Soil Classification System, what soil type is this?(b) On the plasticity chart for the AASHTO classification system, what soil type is this?
Classify the following soils using ASTM D 2487. Describe step by step procedure for each sample . Draw grain size distribution curves for coarse-grained soils only Note: use graph paper
From the particle size distribution curve, about 61% of the oil is finer than 0.074 mm in diameter. The liquid limit and plastic limit of minus No 40 fraction of the soils are as follows: LL =26, PL= 20. Classify the soil using the USCS.a. CL-MLb. CL-MLc. SP-SCd. CH
State whether the following are true or false. a. In the AASHTO classification Table 4.1, the soils that are more suitable for roadwork are located on the left than right. b. In AASHTO classification system, the better performing fine grained soils are the ones with lower group indices. c. In AASHTO classification system, sands are classified as grains with 0.075-4.75 mm diameter. d. The USCS symbol for clayey gravel is CG. e. A soil with USCS symbol SM is sandy silt.
How is the moisture content of a soil identified?
Classify the soil using AASHTO. The liquid limit and plastic limit are found to be 30 and 20, respectively. The following data are obtained: Percent passing No. 4 sieve: 100% Percent passing No. 10 sieve: 91% Percent passing No. 40 sieve: 60% Percent passing No. 200 sieve: 20%
Given the gathered data in sieve analysis of a soil sample; 1. Classify the soil using USDA 2. Classify the soil using AASHTO soil classification system
The soil at a borrow area is at moisture content of 8.5%and unit weight of 17.5 kN/m3. This soil is used in the construction of a compacted road base where the dry unitweight is 19.5 kN/m3 and the moisture content is 14.0%. Ifthe finished volume of the road base is 120,000 m3, whatwould be the volume of the soil removed from the borrowpit? How much water would be added to the soil from theborrow pit?