The figure below shows a proposed foundation site, with 10 ft of sand overlying 20 ft of clay with consolidation properties shown. The clay is normally consolidated. Assume 1-D conditions. a. Compute the initial σ′v at the middle of the clay layer prior to excavation and construction b. After excavation and during construction, the foundation area will be heavily loaded with the structure and  equipment so that σ′v at the middle of the clay layer will be increased to 3900 psf. Determine the settlement that will occur under these conditions c. After construction is completed, the equipment will be removed and the final σ′v at the middle of the clay layer will be 3200 psf. Compute the swell that occurs after the equipment is removed

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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The figure below shows a proposed foundation site, with 10 ft of sand overlying 20 ft of clay with consolidation properties shown. The clay is normally consolidated. Assume 1-D conditions.
a. Compute the initial σ′v at the middle of the clay layer prior to excavation and construction
b. After excavation and during construction, the foundation area will be heavily loaded with the structure and  equipment so that σ′v at the middle of the clay layer will be increased to 3900 psf. Determine the settlement that will occur under these conditions
c. After construction is completed, the equipment will be removed and the final σ′at the middle of the clay layer will be 3200 psf. Compute the swell that occurs after the equipment is removed

7777
10'
20²
!
Foundation stress
1
Sand
Yd= 110 pcf
Clay
Yt = 120 pcf
Cre= 0.035
CCE
0.165
Transcribed Image Text:7777 10' 20² ! Foundation stress 1 Sand Yd= 110 pcf Clay Yt = 120 pcf Cre= 0.035 CCE 0.165
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