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

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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**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.
Transcribed Image Text:**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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