Classify a soil with 30% clay, 15% silt, 32% sand, and 23% gravel. 100 90, 10 80 20 70 30 Clay 60 40 50 50 Sandy 40 Clay Silty Clay 60 Silty Clay Loam 30 Sandy Clay Loam 70 Clay Loam 20 80 Loam Sift Loam Sahdy Loan Loamy Sand 10 90 Šilt/ /San 100 90 80 70 60 50 100 40 30 20 10 Percentage by Weight Sand a. Silt Loam b. Sandy Clay Loam Oc. Sandy Loam d. Clay Loam Percentage by Weight Silt Percentage by Weight Clay

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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## Soil Classification Using Soil Texture Triangle

In this activity, you will classify a soil sample with the following composition:
- 30% clay
- 15% silt
- 32% sand
- 23% gravel

### Soil Texture Triangle Diagram
The soil texture triangle is a graphical representation used to classify the texture of soil based on its composition of clay, silt, and sand.

#### How to Read the Diagram:
1. **Percentage by Weight Clay:** Measured along the left axis, moving from the base (0%) to the top (100%).
2. **Percentage by Weight Silt:** Measured along the right axis, moving from the base (0%) to the top (100%).
3. **Percentage by Weight Sand:** Measured along the bottom axis, moving from left (100%) to the right (0%).

Each of these axes is marked with lines representing increments of 10%. To classify a soil sample, find the intersection of the lines corresponding to the percentages of clay, silt, and sand.

### Classifying the Example Soil Sample
Given:
- **Clay:** 30%
- **Silt:** 15%
- **Sand:** 32%

1. **Locate 30% clay** on the left axis and draw a horizontal line to the right.
2. **Locate 15% silt** on the right axis and draw a line downward and to the left, parallel to the sand percentage lines.
3. **Locate 32% sand** on the bottom axis and draw a line upward and to the left, parallel to the silt percentage lines.

The point where all three lines intersect determines the soil texture classification. 

In this case, the intersection point falls within the region labeled "Sandy Clay Loam," indicating that the soil type for this composition is **Sandy Clay Loam**.

### Answer Options
- a. Silt Loam
- b. Sandy Clay Loam
- c. Sandy Loam
- d. Clay Loam

**Correct Answer:** b. Sandy Clay Loam

### Graph Explanation
The image shows a triangular diagram divided into various regions that represent different soil textures such as Clay, Sand, Silt, Loam, and combinations like Sandy Clay, Silty Loam, etc. Each region is defined by the specific ranges of clay, silt, and sand percentages. When determining soil texture, the intersection point of the given percentages of
Transcribed Image Text:## Soil Classification Using Soil Texture Triangle In this activity, you will classify a soil sample with the following composition: - 30% clay - 15% silt - 32% sand - 23% gravel ### Soil Texture Triangle Diagram The soil texture triangle is a graphical representation used to classify the texture of soil based on its composition of clay, silt, and sand. #### How to Read the Diagram: 1. **Percentage by Weight Clay:** Measured along the left axis, moving from the base (0%) to the top (100%). 2. **Percentage by Weight Silt:** Measured along the right axis, moving from the base (0%) to the top (100%). 3. **Percentage by Weight Sand:** Measured along the bottom axis, moving from left (100%) to the right (0%). Each of these axes is marked with lines representing increments of 10%. To classify a soil sample, find the intersection of the lines corresponding to the percentages of clay, silt, and sand. ### Classifying the Example Soil Sample Given: - **Clay:** 30% - **Silt:** 15% - **Sand:** 32% 1. **Locate 30% clay** on the left axis and draw a horizontal line to the right. 2. **Locate 15% silt** on the right axis and draw a line downward and to the left, parallel to the sand percentage lines. 3. **Locate 32% sand** on the bottom axis and draw a line upward and to the left, parallel to the silt percentage lines. The point where all three lines intersect determines the soil texture classification. In this case, the intersection point falls within the region labeled "Sandy Clay Loam," indicating that the soil type for this composition is **Sandy Clay Loam**. ### Answer Options - a. Silt Loam - b. Sandy Clay Loam - c. Sandy Loam - d. Clay Loam **Correct Answer:** b. Sandy Clay Loam ### Graph Explanation The image shows a triangular diagram divided into various regions that represent different soil textures such as Clay, Sand, Silt, Loam, and combinations like Sandy Clay, Silty Loam, etc. Each region is defined by the specific ranges of clay, silt, and sand percentages. When determining soil texture, the intersection point of the given percentages of
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