Module 4 : Design of Shallow Foundations
Lecture 19 : Settlement [ Section19.4 : Problems ]
   
 

The calculations are given in the tabular form in table 4.15

The graph of time (days) vs settlement (m) is plotted for both the footings which is given in fig. 4.69 and the graph of differential settlement is also plotted which is given in fig. 4.70. As seen from this graph the max differential settlement is 22mm (For first position).
 
Table 4.15: Values of time and settlement for each footing (for position 2)
 

Time(days)

U

Settlement(m)

Differential settlement(m)

Footing A
Footing B
Footing A
Footing B
Footing A
Footing B

0

 

 

 

 

0

0

0

50

0.135

0.54

0.41

0.79

0.0102

0.0021

0.0081

100

0.27

1.08

0.58

0.94

0.0144

0.0025

0.0119

150

0.405

1.62

0.70

0.99

0.0173

0.0026

0.0147

200

0.54

2.16

0.79

1.00

0.0194

0.0026

0.0167

250

0.675

2.7

0.85

1.00

0.0209

0.0027

0.0182

300

0.81

3.24

0.89

1.00

0.0220

0.0027

0.0193

350

0.945

3.78

0.92

1.00

0.0227

0.0027

0.0201

400

1.08

4.32

0.94

1.00

0.0233

0.0027

0.0206

450

1.215

4.86

0.96

1.00

0.0237

0.0027

0.0210

500

1.35

5.4

0.97

1.00

0.0239

0.0027

0.0213

550

1.485

5.94

0.98

1.00

0.0242

0.0027

0.0215

600

1.62

6.48

0.99

1.00

0.0243

0.0027

0.0216

650

1.755

7.02

0.99

1.00

0.0244

0.0027

0.0217

700

1.89

7.56

0.99

1.00

0.0245

0.0027

0.0218

750

2.025

8.1

0.99

1.00

0.0245

0.0027

0.0219

800

2.16

8.64

1.00

1.00

0.0246

0.0027

0.0219

850

2.295

9.18

1.00

1.00

0.0246

0.0027

0.0219

900

2.43

9.72

1.00

1.00

0.0246

0.0027

0.0220

950

2.565

10.26

1.00

1.00

0.0246

0.0027

0.0220

   
   
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