Given The 3 m thick dense silt layer shown below is the top stratum of a construction site, has an effective diameter of 0.01 mm. The "free ground water" level is 8 meters below the ground surface, the ys =26.5 kN/m², and the soil between the ground surface and the capillary level is partially saturated to 50%. Find: What is the approximate height of the capillary rise in that silt stratum? What are the vertical effective stresses at depths of 3 m and 8 m below the surface? Use Terzaghi and Peck 1967 formula for capillary rise with C = 0.0303 m? Dense silt y3 m Clay

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Geotechnical

**Given:**

The 3 m thick dense silt layer shown below is the top stratum of a construction site, has an effective diameter of 0.01 mm. The “free ground water” level is 8 meters below the ground surface, the γₛ = 26.5 kN/m³, and the soil between the ground surface and the capillary level is partially saturated to 50%.

**Find:**

- What is the approximate height of the capillary rise in that silt stratum?
- What are the vertical effective stresses at depths of 3 m and 8 m below the surface?

Use Terzaghi and Peck 1967 formula for capillary rise with C = 0.0303 m².

**Diagram Explanation:**

The diagram is a simple vertical cross-section showing the soil layers:

- **Dense silt**: This top layer is 3 meters thick.
- **Clay**: Underlying layer, starting from the base of the silt layer and indicated to extend beyond the silt.

There are labels indicating the thickness of each layer:
- \( h_1 = 3 \, \text{m} \) for the dense silt layer.
- \( h_2 = 5 \, \text{m} \) indicating the distance from the bottom of the silt layer going further down into the clay.
Transcribed Image Text:**Given:** The 3 m thick dense silt layer shown below is the top stratum of a construction site, has an effective diameter of 0.01 mm. The “free ground water” level is 8 meters below the ground surface, the γₛ = 26.5 kN/m³, and the soil between the ground surface and the capillary level is partially saturated to 50%. **Find:** - What is the approximate height of the capillary rise in that silt stratum? - What are the vertical effective stresses at depths of 3 m and 8 m below the surface? Use Terzaghi and Peck 1967 formula for capillary rise with C = 0.0303 m². **Diagram Explanation:** The diagram is a simple vertical cross-section showing the soil layers: - **Dense silt**: This top layer is 3 meters thick. - **Clay**: Underlying layer, starting from the base of the silt layer and indicated to extend beyond the silt. There are labels indicating the thickness of each layer: - \( h_1 = 3 \, \text{m} \) for the dense silt layer. - \( h_2 = 5 \, \text{m} \) indicating the distance from the bottom of the silt layer going further down into the clay.
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