**Classifying Soils using Unified (USCS) and AASHTO Methods**In this exercise, we will classify soils using the Unified Soil Classification System (USCS) and the American Association of State Highway and Transportation Officials (AASHTO) methods. For this classification, the coefficients are given as Cu = 7 and Cc = 2.5.### Soil Data:| % Passing | Soil No. 1 | Soil No. 2 ||-----------|------------|------------|| #4 | 95 | 62 || #10 | 88 | 41 || #40 | 81 | 33 || #200 | 65 | 11 || LL (Liquid Limit) | 53 | 21 || PL (Plastic Limit) | 36 | 12 |### Classification:- **USCS Classification:** - Soil No. 1: ___________ - Soil No. 2: ___________- **AASHTO Classification:** - Soil No. 1: ___________ - Soil No. 2: ___________### Notes:- The table provides the percentage of particles passing through various sieve sizes (#4, #10, #40, and #200).- The liquid limit (LL) and plastic limit (PL) values are necessary for determining the soil’s plasticity index, a key factor in classification.### Diagrams/Graphs:- There are no diagrams or graphs in this image.Please fill in the classification details based on your calculations or observations.

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Engineering

Civil Engineering

Classify the following soils by the Unified (USCS) and AASHTO methods. Where necessary, assume CU =7 and Cc=2.5.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter2: Soil Deposits-origin, Grain-size, And Shape

Section: Chapter Questions

Problem 2.14P

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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

**Classifying Soils using Unified (USCS) and AASHTO Methods**

In this exercise, we will classify soils using the Unified Soil Classification System (USCS) and the American Association of State Highway and Transportation Officials (AASHTO) methods. For this classification, the coefficients are given as Cu = 7 and Cc = 2.5.

### Soil Data:

| % Passing | Soil No. 1 | Soil No. 2 |
|-----------|------------|------------|
| #4 | 95 | 62 |
| #10 | 88 | 41 |
| #40 | 81 | 33 |
| #200 | 65 | 11 |
| LL (Liquid Limit) | 53 | 21 |
| PL (Plastic Limit) | 36 | 12 |

### Classification:

- **USCS Classification:**
- Soil No. 1: ___________
- Soil No. 2: ___________

- **AASHTO Classification:**
- Soil No. 1: ___________
- Soil No. 2: ___________

### Notes:
- The table provides the percentage of particles passing through various sieve sizes (#4, #10, #40, and #200).
- The liquid limit (LL) and plastic limit (PL) values are necessary for determining the soil’s plasticity index, a key factor in classification.

### Diagrams/Graphs:
- There are no diagrams or graphs in this image.

Please fill in the classification details based on your calculations or observations.

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