Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 2, Problem 2.4P
For a soil, given:
D10 = 0.08 mm
D30 = 0.22 mm
D60 = 0.41 mm
Calculate the uniformity coefficient and the coefficient of gradation of the soil.
2.4 Repeat Problem 2.3 for the following:
D10 = 0.24 mm
D30 = 0.82 mm
D60 = 1.81 mm
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Hydrometer and sieve analysis were conducted on a soil sample.
Find D10 Deo uniformity coefficient (Cu), coefficient of curvature (CC) considering the chart given below.
Hint: Cu=Deo/D10 and CC=(D3)2 / (D1oxD6o)
100
90
80
70
60
50
40
30
20
10
0,001 CLAY
0,01
SILT
0,1
SAND
GRAVEL
10
100
DANE ÇAPI/ PARTICLE SIZE (mm)
Dec: (in mm) seç.
CC
Seç.
Cu
Seç.
D10: (in mm)
Seç.
GEÇEN DANE YÜZDESİ / PERCENT FINER THAN D
For a soil, suppose that D10 = 0.18 mm, D30 = 0.32 mm, and D60 = 0.78 mm. Calculate the uniformity coefficient and the coefficient of gradation.
Calculate the particle density of a soil using the following values;a. Weight of the flask= 40 g b. Volume of the flask= 50 ccc. Weight of dry soil= 15 gd. Weight of flask+soil+water= 96 g
a.1.67
b.1.65
c.1.63
d.1.60
Chapter 2 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
Ch. 2 - Prob. 2.1PCh. 2 - Following are the results of a sieve analysis: a....Ch. 2 - For a soil, given: D10 = 0.08 mm D30 = 0.22 mm D60...Ch. 2 - For a soil, given: D10 = 0.08 mm D30 = 0.22 mm D60...Ch. 2 - Repeat Problem 2.2 with the following results of a...Ch. 2 - Repeat Problem 2.2 with the following results of a...Ch. 2 - The particle characteristics of a soil are given...Ch. 2 - Redo Problem 2.7 according to the USDA system...Ch. 2 - Redo Problem 2.7 according to the AASHTO system...Ch. 2 - In a hydrometer test, the results are as follows:...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- Problem 4. A 1-m³ sample of moist soil weighs 2000 kg. The water content is 10%. Assume is 2.70 Mg/m³. With this information, fill in all blanks in the phase diagram below. V₁ = V₂ Vw Air Water- Soil M₂ Ms M₁ =arrow_forward8. The grain size analysis for a soil is given as: asso a. Plot a grain-size distribution curve. b. Determine D10, D30, and D60 from the grain-size distribution curve. c. Calculate the uniformity coefficient, Co. d. Calculate the coefficient of curvature, Co Sieve No. 4 10 20 40 60 100 200 Pan Mass of soil retained (g) 28 42 48 128 221 86 40 24 Cu= Duo / Dio (c = (P30)² 2²/D₁x Duoarrow_forwardHomework Chapter 3 31 Results from liquid and plastic limit tests conducted on soil are given below. No. of blows, N Moisture content (%) 14 38.4 16 36.5 20 33.1 28 27.0 If the plastic limit is PL = 13.4% a. Draw the flow curve and obtain the liquid limit. b. What is the plasticity index of the soil? Ans.: L.L = 29%, P.L = 15.6 3.2 Determine the liquidity index of the soil in Problem (1) if wWin situ = 32%. Ans.: L.I = 1.19% 3.3 Results from liquid and plastic limit tests conducted on soil are given below. No. of blows, N Moisture content (%) 13 18 27 22 If the plastic limit is PL = 19.1% a. Draw the flow curve and obtain the liquid limit. b. What is the plasticity index of the soil? Ans.: L.L = 23.6%, P.L = 4.5% 3.4 Determine the liquidity index of the soil in Problem (3) if win situ = 21% Ans.: L.I = 0.422% 3.5 A saturated soil used to determine the shrinkage limit has initial volume Vi = 20.2 cm3, final volume Vf = 14.3 cm3, the mass of wet soil M1 = 34 g, and mass of dry soil M2 =…arrow_forward
- 76 .ll Q3.png The data from standard and modified proctor test on a soil sample (density of solids: 2680 kg/m3 ) are provided below: Standard proctor test Modified proctor test Dry density (kg/m) 1691 Dry density (kg/m') 1873 Water content (%) Water content (%) 9.3 9.3 1715 11,8 1910 12.8 1755 14.3 1803 15.5 1747 17.6 1699 18.7 1685 20.8 1641 21.1 1619 23 a) Plot the compaction curves (both standard and modified in one graph). b) Establish the maximum dry density and optimum water content for each test.arrow_forwardPressure (kN/m²)27 54 107 214 429 214 107 54 Void ratio1.243 1.217 1.144 1.068 0.994 1.001 1.012 1.024 The table above shows results obtained from an oedometer test on a specimen of saturated clay. A layer of this clay 2.5 m thick lies below a 10 m depth of sand, the water table being at the surface. The saturated weight for both soils is 19 kN/m³. A 10-m depth of fill of unit weight of 21 kN/m³ is placed on the sand over an extensive area. If the fill was to be removed some time after the completion of consolidation, what heave (mm) would eventually take place due to swelling of the clay? (0 d.p). Use unit weight of water of 9.8 kN/m3. Use log base 10.arrow_forwardQUESTION 1 1. For a soil with De=0.41 mm, D = 0.22mm, and Die = 0.08 mm, calculate the uniformity coefficient and the coefficient of gradation. 2. The following are the results of a sieve and hydrometer analysis. Sieve number/ grain size Analysis Sieve Hydrometer 40 80 170 200 0.04 mm 0.015 mm 0.008 mm 0.004 mm 0.002 mm Draw the grain-size distribution curve. Percent finer 100 97 74 27 11 a) b) Determine the percentages of gravel, sand, silt and clay according to the AASHTO system.arrow_forward
- To determine the water content of a soil, pycnometer test is employed. Based an the below given data, calculate the water content of this soil sample in (%). Weight of moist sample = 255.65 gm Weight of pycnometer full of water = 3022.10 gm Weight of pycnometer + weight of fully saturated soil = 3120.40 gm Specific gravity of soil solids = 2.72.arrow_forwardThe composition and phase diagrams of a typical soil mass is shown in Figure Q1. If the specific gravity of the soil solids is 2.7, show from first principle that the bulk unit weight of the soil is given by: Ybulk = 26.5(1 + w) (1 + e)arrow_forwardTry solving the following problems: 4.3] Results from liquid and plastic limit tests conducted on a soil are given below. 120] Liquid limit tests: Number of blows, N Moisture content (%) 13 33 18 27 29 22 Plastic limit tests: PL = 19.1% d. Draw the flow curve and obtain the liquid limit. e. What is the plasticity index of the soil? 4.4 Determine the liquidity index of the soil in Problem 4.3 if win situ = 21%. 120arrow_forward
- Figure shows three layers of soil in a tube that is 100 mm x 100 mm in cross section. Water is supplied to maintain a constant-head difference of 300 mm across the sample. The hydraulic conductivities of the soils in the direction of flow through them are as follows: Soil k (cm/sec) A 102 B 3x103 4.9x104 300 mm Silty sand Gravelly sand Sand where the length of soils are equal = 150 mm for eacharrow_forwardCalculate the bulk density (g/cc) of a soil using the following values; a. Weight of core= 150 g b. Weight of core + fresh soil= 230 g c. Moisture content of the soil= 12% d. Height of the core= 9.5 cm e. Diameter of the core= 4 cm * A. 0.65 B. 0.60 C. 0.55 D. 0.50arrow_forwardSituation. Given the size particle distribution of the soil, solve for the modified percentage of sand, silt, and clay. Gravel=24% Sand= 35% Silt= 25% Clay= 16% A 46%, 33%, 21% B 40%, 35%, 35% 42%, 33%, 25% D 38%, 33%, 29%arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Fundamentals of Geotechnical Engineering (MindTap...Civil EngineeringISBN:9781305635180Author:Braja M. Das, Nagaratnam SivakuganPublisher:Cengage Learning
Fundamentals of Geotechnical Engineering (MindTap...
Civil Engineering
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Cengage Learning
How Are Highways Designed?; Author: Practical Engineering;https://www.youtube.com/watch?v=9XIjqdk69O4;License: Standard Youtube License