
Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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Transcribed Image Text:**Request:** Use the Excel Spreadsheet Classical_Settlement_Shallow.xls to finish the homework and print out the spreadsheet for additional support. In your answer to each design mini-project, you need to provide the design objective, scope, main method, results, and your conclusion.
**Question 1:** The allowable settlement for the proposed square footing is 1.0 in. Using the classical method, compute its settlement and determine if it satisfies this criterion.
*Hints:*
- \( B = 6 \) ft
- \( D = 2 \) ft
- \( P = 100 \) k
- \( D_w = 10 \) ft
- \( r = 0.85 \) (r is fixed at 0.85 for all questions in this homework)
- Input \( C_c/(1+e) = 0.11 \)
- \( C_r/(1+e) = 0.02 \)
- \(\sigma_m' = 4000 \) lb/ft²
- \( \gamma = 115 \) lb/ft³ for all layers
**Diagram Explanation:**
The diagram illustrates a cross-section of a footing design in silty clay soil:
- The footing width (B) is labeled as 6 ft.
- The depth of footing (D) is marked as 2 ft.
- The depth to the water table (Dw) is shown as 10 ft below the surface.
- The pressure applied (P) is indicated as a downward arrow labeled 100 k.
- The soil properties are listed within the diagram:
- Undrained shear strength (\( s_u \)) = 3000 lb/ft²
- Compression index (\( C_c/(1+e) \)) = 0.11
- Recompression index (\( C_r/(1+e) \)) = 0.02
- Effective vertical stress (\( \sigma_m' \)) = 4000 lb/ft²
- Unit weight (\( \gamma \)) = 115 lb/ft³
This diagram provides a visual representation of the parameters and setup necessary for the classical settlement analysis.
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