Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 5, Problem 5.7P
To determine
Find the suitability number for the soil A, B, and C and provide the soil suitability for densification using vibroflotation method.
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B. (
A Soil Specimen has the following characteristics:
% passing No.4 sieve = 85
% passing No.200 sieve = 11
D60 = 2 mm
D30 = 0.35 mm
D10 = 70 μm
L.L = 36%
P.L = 31%
D8 = 2 μm
1. Classify the specimen according to the Unified Soil Classification System
(USCS). Assign the group name and the group symbol.
2. Determine the soil activity.
3. Determine the soil Liquidity index and consistency index if we = 26%.
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B. (
A Soil Specimen has the following characteristics:
% passing No.4 sieve = 85
% passing No.200 sieve = 11
D60 = 2 mm
D30 = 0.35 mm
D₁0 = 70 μm
L.L = 36%
P.L = 31%
D8 = 2 µm
1. Classify the specimen according to the Unified Soil Classification System
(USCS). Assign the group name and the group symbol.
2. Determine the soil activity.
3. Determine the soil Liquidity index and consistency index if we = 26%.
b. A soil layer with a moisture content of 10 percent and a unit weight of 16.5 KN per cubic meter has a decrease in volume by 10 percent after compaction. Find the dry specific weight of the soil.
Please solve question (b) I have the answer of Question (a)if you need information please use the question a. given data:
a. The moisture content of the soil specimen is 20%, and the total weight is 300 gr. Calculate thevoid ratio and degree of saturation if the total volume was 180 cm3. (Gs = 2.5)
Chapter 5 Solutions
Principles of Foundation Engineering (MindTap Course List)
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- Refer to the soil in Problem 4.5. Using the Casagrande plasticity chart, graphically estimate the shrinkage limit of the soil as shown in Figure 4.22. 4.5 The following data were obtained by conducting liquid limit and plastic limit tests on a soil collected from the site. Liquid limit tests: Plastic limit test: PL = 19.3% a. Draw the flow curve and determine the liquid limit. b. Using the Casagrande plasticity chart (Figure 4.21), determine the soil type.arrow_forwardThe total volume of a soil specimen is 80,000 mm^3 and has a mass of 152 g. the dry mass of the specimen is 122g, and the density of the soil is 2.65 Mg/m^3. Compute the following index properties: (a) e; (b) n; (c) S; (d) ρt; and (e) ρd. Include phase diagrams.arrow_forwardThe Grain size analyses results are given in Figure 1 for Soils A and B. Answer the following questions: i) The uniformity coefficient, Cu (= D60/D10) for Soil A is ii) Soil B is classified as.. ..... grained soil. iii) If liquid limit (LL) and plastic limit (PL) values of Soil A are given as 65 % and 35%, then the soil is classified as ................. by using plasticity chart provided below. PLASTICITY INDEX (PI) Percentage Smaller 50 40 30 100 90 20 80 70 60 50 40 30 20 10 0 0,001 For clessification of fine-grained soils and fine-grained fraction of course-grained Equation of A-line Horizontal et PI-4 to LL-25.5 Then PI-0.73 (LL-201 Equation of "u-line Vertical et LL-16 to PI-7 then PI-0.9 (LL-8) Z MHO OH ML OL soills 10 Soil A X 20 0,01 0,1 Particle Size (mm) Figure 1.Grain Size Distribution CLOL LOWING 1 CH OH Soil B LIQUID LIMIT (LL) FG4 Plasticity Chart Figure 2. Plasticity Chart 10 Tioarrow_forward
- A sample of soil was tested in the laboratory, and the test results were listed as follows. Classify the soil by Unified Soil Classification System. 1. Liquid limit = 29%. 2. Plastic limit = 19%. 3. Mechanical grain-size analysis:arrow_forwardSr B. ( A Soil Specimen has the following characteristics: % passing No.4 sieve = 85 % passing No.200 sieve = 11 D60 = 2 mm D30=0.35 mm D₁0 = 70 μm D8=2 μm L.L = 36% P.L = 31% 1. Classify the specimen according to the Unified Soil Classification System (USCS). Assign the group name and the group symbol. 2. Determine the soil activity. 3. Determine the soil Liquidity index and consistency index if wc = 26%.arrow_forwardThe consistency limits of a soil sample are: LL=52%, PL=35%, SL=17%. If a specimen of this soil shrinks from a volume of 10 cc at liquid limit to 6.1 cc at plastic limit, determine the specific gravity of solids. Answer should be Gs=2.65.arrow_forward
- Problem Set 4 4. The following data were obtained from the liquid and plastic limit tests for a soil: Liquid Limit Test: Number of blows (N) Molsture content (%) a) Draw the flow curve from the liquid limit test data and find the liquid limit. (use excel to graph) b) What is the plasticity index of 17 42.1 22 38.2 27 36.2 32 34.1 Plastic Limit Test: Moisture content = 21.3% the soil?arrow_forwardPROBLEM 5: Laboratory test shows that a soil sample has emax = 0.85 and emin = 0.55. If the porosity of the sample is 43%, compute the density index. a. 26% C. 45% b. 32% d. 28%arrow_forward5:33 PROBLEM No. 3 Given the laboratory results of the Atterberg Limit Test in Figure 3.1 and Table 3.1. a. Determine the nearest value to the Liquid Limit of the soil. b. Determine the nearest value to the Plastic Limit of the soil. c. Determine the nearest value to the Plasticity Index. d. Describe the plasticity characteristic of the soil based on the Plasticity Index. e. If the in-situ moisture content of the soil is 23%, determine the Liquidity Index of the soil. f. Determine the state of consistency of the in-situ soil. g. Determine the Consistency Index of the soil. h. Describe the consistency of the soil. 35 34 33 32 31 30 29 * 28. 27 26 25 24 O 23 a 22 O 21 20 19 18 17 16 15 10 20 30 40 50 FIGURE 3. 1 Number of Blows, N TABLE 3.1 Plastic Limit Test No. → 2 3 4 5 Weight of Wet Soil, g 128.6 141.4 132.6 134.6 136 Weight of Dry Soil, g 105.4 116.8 109.6 111.2 113.4 Weight of Water, g Water Content, % A soul.su.edu.pharrow_forward
- 2. The following table shows results of testing of two types of soil: Soil G, W% S, LL PL A. 2.22 25 0.95 0.35 22 В 2.72 38 1.01 0.62 26 C 2.66 45 0.92 0.80 35 Answer the question below: I. Which of these soils contains less clay particles? Note ** show in solution process answers II. Which of these soils has a less void ratio? Note ** show in solution process answers III. Which of these soils has a less dry density? Note ** show in solution process answersarrow_forwardThe same soil sample has a natural moisture content of 30% and was subject to the Atterberg Limits test. The plastic limit was measured as 27 while the liquid limit test shows the results in the table below. Number of Blows 42 26 10 Moisture Content 20 32 45 a. Determine the liquid limit of the soil sample. Show and briefly explain how you got the answer. b. Solve and describe the Plasticity Index of the soil sample. c. Determine value and soil state of the liquidity index of the soil sample. d. Determined and describe the clay activity of the soil sample.arrow_forward1. Two soil samples A and B were found to have the physical properties shown in Table 1. Check the statement (true or false): void ratio of sample A is greater than void ratio of sample B. Show, using a phase diagram, the process by which you have arrived at your answer. Table 1. Results of physical properties. Sample A 15 2.75 50 Physical Properties Moisture content, w (%) Specific gravity of solids, Gs Degree of saturation, St (%) Sample B 6 2.68 30arrow_forward
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