**Classify the following soils according to the AASHTO Soil Classification with Group Index (GI):**The table provides data for two soil samples, A and B, with the percentage of each sample passing through various U.S. standard sieves, along with their Liquid Limit (LL) and Plastic Limit (PL).| Soil | Percent passing U.S. sieve | LL | PL ||------|----------------------------|----|----|| | No. 4 | No. 10 | No. 20 | No. 40 | No. 60 | No. 100 | No. 200 | | || A | 95 | 86 | 65 | 52 | 46 | 38 | 25 | 38 | 22 || B | 100 | 98 | 95 | 88 | 82 | 75 | 65 | 65 | 58 |- **Soil A:** - Sieves: Higher percentage retained in finer sieves, indicating it has more fine particles. - Liquid Limit (LL): 38 - Plastic Limit (PL): 22- **Soil B:** - Sieves: Higher percentage passing through all sieves, suggesting it is finer overall. - Liquid Limit (LL): 65 - Plastic Limit (PL): 58This classification process requires you to determine the textural class of each soil type, using both the percentage passing through sieves and the limits for plasticity.

7. Classify the following soils according to the AASHTO Soil Classification with Group Index (GI) Soil A B No. 4 95 100 Percent passing U.S. sieve No. 10 No. 20 No. 40 No. 60 No. 100 No. 200 86 65 52 46 38 25 98 95 88 82 75 65 LL PL 38 65 22 58

7. Classify the following soils according to the AASHTO Soil Classification with Group Index (GI) Soil A B No. 4 95 100 Percent passing U.S. sieve No. 10 No. 20 No. 40 No. 60 No. 100 No. 200 86 65 52 46 38 25 98 95 88 82 75 65 LL PL 38 65 22 58

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter2: Origin Of Soil And Grain Size

Section: Chapter Questions

Problem 2.2CTP: Refer to Problem 2.C.1. Results of the sieve analysis for Soils A, B, and C are given below. To...

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Concept explainers

Soil classification and characteristics

Soil classification is a method of categorizing soil based on its properties, types, and uses. The motive of soil classification is to arrange various types of soils and divide them into groups for various engineering and agricultural purposes. Soil classification is carried out by various agencies as per their purposes. From an engineering perspective, soil classification is done to find out the suitability of soil for various construction purposes like the construction of dams, foundations, highways, infrastructures, and so on. For engineering purposes, the soil is classified by the following systems:

Question

**Classify the following soils according to the AASHTO Soil Classification with Group Index (GI):**

The table provides data for two soil samples, A and B, with the percentage of each sample passing through various U.S. standard sieves, along with their Liquid Limit (LL) and Plastic Limit (PL).

| Soil | Percent passing U.S. sieve | LL | PL |
|------|----------------------------|----|----|
| | No. 4 | No. 10 | No. 20 | No. 40 | No. 60 | No. 100 | No. 200 | | |
| A | 95 | 86 | 65 | 52 | 46 | 38 | 25 | 38 | 22 |
| B | 100 | 98 | 95 | 88 | 82 | 75 | 65 | 65 | 58 |

- **Soil A:**
- Sieves: Higher percentage retained in finer sieves, indicating it has more fine particles.
- Liquid Limit (LL): 38
- Plastic Limit (PL): 22

- **Soil B:**
- Sieves: Higher percentage passing through all sieves, suggesting it is finer overall.
- Liquid Limit (LL): 65
- Plastic Limit (PL): 58

This classification process requires you to determine the textural class of each soil type, using both the percentage passing through sieves and the limits for plasticity.

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