TOPIC 3: DESIGN AND ANALYSIS OF SHALLOW FOUNDATION

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TOPIC 3 DESIGN AND ANALYSIS OF SHALLOW FOUNDATION

• WEEK 5
• BEARING CAPACITY OF SHALLOW FOUNDATION.
• BEARING CAPACITY FAILURES

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Learning Outcomes

• Student should be able to
• Design shallow foundation. (CO2-PO10)
• Discuss the design criterias.(CO2-PO4)
• Discuss the modes of bearing capacity
  failures(CO2-PO4)

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Design Criterias for Shallow Foundation

• Adequate Depth and Location
• -Frost action, flooding, rainfall
• - adjacent structure and property line
• building codes
• Safe from Bearing Capacity Failure
• Safe from excessive settlement

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Design Steps

• Determine column load
• Obtain Soil Profile with soil properties
• Determine depth and location of Foundation
• Evaluate Bearing Capacity of supporting soil
• Determine size of footing
• Compute footing contact pressure and check
  stability against bearing capacity failure
• Estimate total and differential settlement
• Design the footing structure

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Bearing Capacity of Shallow Foundation

• Terzaghi and Peck, 1967

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Modes of Bearing Capacity Failures
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