Depth (m) 0-2.2 2.2-6.1 6.1-11.5 11.5-30.0 Soil classification Stiff clayed silt (CL) Stiff silty clay (CL) Very stiff sandy clay (CL) Very stiff sandy clay (CL) Undrained shear strength su 70 85 120 180 The groundwater table is at a depth of 50 m. No onsite static load test data is ava the soil conditions are uniform, and the site characterization program was average factor of safety for the drilled shaft is 3.0. Compute the allowable downward capac each shaft.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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An office building is to be supported on a series of 700-mm diameter, 12.0-m long drilled shafts that will be built using the open hole method. The soil profile at this site is as follows:
Transcribed Image Text:An office building is to be supported on a series of 700-mm diameter, 12.0-m long drilled shafts that will be built using the open hole method. The soil profile at this site is as follows:
### Soil and Foundation Information

**Soil Data Table:**

| Depth (m) | Soil Classification    | Undrained Shear Strength \( s_u \) (kPa) |
|-----------|------------------------|------------------------------------------|
| 0-2.2     | Stiff clayed silt (CL) | 70                                       |
| 2.2-6.1   | Stiff silty clay (CL)  | 85                                       |
| 6.1-11.5  | Very stiff sandy clay (CL) | 120                                   |
| 11.5-30.0 | Very stiff sandy clay (CL) | 180                                   |

**Additional Information:**
- The groundwater table is at a depth of 50 m.
- No onsite static load test data is available.
- The soil conditions are uniform and the site characterization program was considered average.
- The factor of safety for the drilled shaft is 3.0.

**Task:**
- Compute the allowable downward capacity of each shaft. 

This table provides essential data for evaluating soil conditions and determining the support capacity needed for construction. The undrained shear strength values are critical for understanding the load-bearing capacity of different soil layers.
Transcribed Image Text:### Soil and Foundation Information **Soil Data Table:** | Depth (m) | Soil Classification | Undrained Shear Strength \( s_u \) (kPa) | |-----------|------------------------|------------------------------------------| | 0-2.2 | Stiff clayed silt (CL) | 70 | | 2.2-6.1 | Stiff silty clay (CL) | 85 | | 6.1-11.5 | Very stiff sandy clay (CL) | 120 | | 11.5-30.0 | Very stiff sandy clay (CL) | 180 | **Additional Information:** - The groundwater table is at a depth of 50 m. - No onsite static load test data is available. - The soil conditions are uniform and the site characterization program was considered average. - The factor of safety for the drilled shaft is 3.0. **Task:** - Compute the allowable downward capacity of each shaft. This table provides essential data for evaluating soil conditions and determining the support capacity needed for construction. The undrained shear strength values are critical for understanding the load-bearing capacity of different soil layers.
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