5Problem:For a given inorganic soil, the following areknown:Percentage passing No. 4 Sieve... 100Percentage passing No. 200 sieve.. 77Liquid limitPlasticity index..........632570CHorCLU-bRI40.73(L-20)MH-lineOLPIOLL-CL-MLOFMLOHorOL10 16 203040506070 8090100Liquid limitClassify the soil by using Unified SqilClassification System.a) What type of soil is this?b) What is the group symbol of the soilC) What is the group name of the soil?

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5 Problem: For a given inorganic soil, the following are known: Percentage passing No. 4 Sieve. .. 100 Percentage passing No. 200 sieve.. 77 Liquid limit Plasticity index. 63 25 CH or CL U-b RIF0.73(L20) MH -line OL PIO(LL- CL-ML Or ML OH or OL 10 16 20 30 40 60 10 90 100 Liquid limit Classify the soil by using Unified Sqil Classification System. a) What type of soil is this? b) What is the group symbol of the soil C) What is the group name of the soil? Plasticity inder

5 Problem: For a given inorganic soil, the following are known: Percentage passing No. 4 Sieve. .. 100 Percentage passing No. 200 sieve.. 77 Liquid limit Plasticity index. 63 25 CH or CL U-b RIF0.73(L20) MH -line OL PIO(LL- CL-ML Or ML OH or OL 10 16 20 30 40 60 10 90 100 Liquid limit Classify the soil by using Unified Sqil Classification System. a) What type of soil is this? b) What is the group symbol of the soil C) What is the group name of the soil? Plasticity inder

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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2. Prove n-e/(1+e) and e-n/(1-n) based on definitions of void ratio and porosity. 3. Classify the following soils according to the unified soil classification system: group symbols and typical names Soil A B Percent passing U.S. sieve No. 4 No. 10 No. 20 No. 40 No. 60 No. 100 No. 200 95 86 65 52 46 38 25 98 95 88 82 75 65 100 LL PL 38 65 22 58
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Determine the soil classification Moisture content = 5.75% Limit liquid = 53.5 Plastic limit = 31.6 Granulometry Sieve % Pass No. 4 100 # 40 68 # 200 54.3 As in the plasticity graph the coordinates are difficult to read use IP = (wL-20), to obtain IP and compare.
The plastic limit and liquid limit of a soil are 30% and 42% respectively. The percentage volume change from the liquid limit to dry state is 35% of the dry volume. Similarly, the percentage volume change from the plastic limit to the dry state is 22% of the dry volume. Determine the shrinkage limit.
For a given sieve analyis: No. 4 - % finer 100%, for No. 200 -%finer 45. LL=36, PL= 22. Classify the soil using USCS. Justify your answer. CHOICES: a.SC b.GC c.SM d.SM
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A natural soil deposit is to be used for a geotechnical engineering project. Laboratory test results indicate that the soil possesses liquid and plastic limits of LL = 30% and PL = 22%, respectively. In addition, the sieve analysis has produced the following information: • % Passing Sieve No. 4 (4.75 mm) % Passing Sieve No. 200 (75 μm) • Coefficient of Uniformity C₁ 100% 8% 1.590 0.012 Coefficient of Curvature Co (a) Determine the soil's classification in accordance with the Unified Soil Classification System (USCS). (b) To further improve the soil's shear strength performance, the natural soil deposit (possessing an in- situ water content of w = 14%) was compacted in-situ and has achieved a saturation degree of S = 85%. If the specific gravity of soil solids is G, = 2.6, determine the soil's dry and bulk unit weights (ya and y) in its current compacted state.
The following laboratory test results for Atterberg limits and particle size distribution were obtained for a soil. Sieve size Percent Passing Liquid limit= 31% No. 4 80 No. 10 60 Plastic limit = 25% No. 40 30 No. 200 10 Classify the soil according to USCS.
• Problem 4- A soil sample from a certain excavation has the following grain size characteristics; Sieve size (mm) 2.00 0.075 0.500 0.005 0.002 % Finer 100 80 64 35 20 The group index of the soil was 17 and has a plasticity index of 24. Determine the liquid limit of the soil. GI = (F-35) [0.2 +0.005(LL-40)] +0.01 (F-15) (P.I. - 10)
The properties of seven different clayey soils are shown below. Investigate the relationship between the strength and plasticity characteristics by performing the following tasks: Soil Beauharnois Detroit I Horten Gosport Mexico City Shellhaven St. Thuribe Mineral % Clay fraction (<2 μm) Kaolinite Illite 79 36 40 55 90 41 36 Montmorillonite Halloysite (hydrated) Halloysite (dehydrated) Attapulgite Allophane Activity, A 0.52 0.36 0.42 0.89 4.5 1.33 0.33 Liquid limit, LL 35-100 60-120 100-900 Undisturbed shear strength (kN/m²) 50-70 40-55 150-250 200-250 18 17 41 29 46 36 38 a. Estimate the plasticity index for each soil using Skempton's definition of activity. b. Estimate the probable mineral composition of the clay soils based on plasticity index and activity using the table below. Plastic limit, PL 20-40 35-60 50-100 Sensitivity, S, 14 40-60 30-45 100-125 120-150 2.5 17 2.2 5.3 7.6 150 Activity, A 0.3-0.5 0.5-1.2 1.5-7.0 0.1-0.2 0.4-0.6 0.4-1.3 0.4-1.3 c. Sensitivity refers to the…