Particle size analyses were carried out on two soils and the data are shown below. The liquid and plastic limits of the soils are: 32 and 15 for Soil A and 48 and 23 for soil B. a. Classify these soils according to USCS b. Is either of the soils organic? c. Which of the two soils is a better material for foundation where seepage is important? Constituent Soil A Soil B % of particle greater than 0.075 mm. Gravel fraction (%) Sand fraction (%) 65 40 42 25 23 15 Silt fraction (%) Clay fraction (%) 22 40 13 20

Particle size analyses were carried out on two soils and the data are shown below. The liquid and plastic limits of the soils are: 32 and 15 for Soil A and 48 and 23 for soil B. a. Classify these soils according to USCS b. Is either of the soils organic? c. Which of the two soils is a better material for foundation where seepage is important? Constituent Soil A Soil B % of particle greater than 0.075 mm. Gravel fraction (%) Sand fraction (%) 65 40 42 25 23 15 Silt fraction (%) Clay fraction (%) 22 40 13 20

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Show your complete solution so I can follow thanks
Answer Choices: A) Cl B) ML C) CH D) MH
The 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 Tio
1. The following results were obtained in a sieve analysis for three different soils. Classify the soils according to the AASHTO classification system. Soil 1 2 3 No. 10 79 80 95 Percent passing No. 401 62 60 78 No. 200 6 33 45 L.L. 38 36 P.L. N.P. 29 16
Question 2 The sieve analysis of soil and the liquid and plastic limits of the fraction passing through the No. 40 sieve are given below. Classify the soils using the AASHTO classification system and give the group indexes. % Passing No. 10: 87 % Passing No. 40: 62 % Passing No. 200: 30 LL = 32 PL = 24 Group classification: Blank 1 Group index: Blank 2
Problem 2: Classify the following soils using USCS Sieve analysis- Percent finer Soil No. 4 No, 200 Liquid limit Plasticity index 1 70 30 33 21 48 20 41 22 3 95 70 52 28 Classify the following soils using AASHTO Sieve analysis-Percent finer Soil No. 10 No. 40 No. 200 Liquid limit Plasticity index 1 85 55 45 28 20 92 75 62 43 28 3 97 60 30 25 16
Question 12 Classify the following soils using the Unified soil classification system. Give the group symbol. No. 4 = 100 No. 200 = 45 LL = 36 PL = 22 A) SC B SP SM GC
Using the unified soil classification system, classify the following soils.i) A 65% of the soil sample retained on No.4 sieve, 30% retained on No.200Sieve, Cu = 3 and Cc = 0.9. Also the LL = 28% and PL = 24.5%.ii) A 55% of soil sample retained on sieve No.4 and 89% retained on sieveNo.200. The soil has a liquid limit (LL) =28% and plastic limit (PL) =18%, Cu= 4.2, Cc = 1.4.
• Particle size analyses were carried out on two soils-Soil A and Soil B-and the particle size distribution curves are shown in Figure % Finer Clay 100 90 80 70 60 50 40 30 20 10 0 0.001 + Silt Soil A Sand Soil B 0.01 0.1 1 Particle size (mm) - log scale Gravel 10 Soil A B 1. Classify these soils according to USCS and ASTM-CS 2. Is either of the soils organic? LL 26 (oven-dried; assume same for not dried) Nonplastic PL 18