A 4-m square footing is shown in figure B which supports a load Q = 5000 kN. In this problem H1 = 8 m and H2 = 12 m. Calculate: a. The pressure at the base of the footing b. The pressure at the mid height of the clay layer assuming that the stress beneath the footing is spread at a slope of 1H to 2V c. The pressure at the mid height of the clay layer [below the center of the footing using Bousinessq equation assuming point load

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Chapter18: Sheet-pile Walls
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Problem 18.17P
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A 4-m square footing is shown in figure B which supports a load Q = 5000 kN. In this problem H1 = 8 m and H2 = 12 m. Calculate: a. The pressure at the base of the footing b. The pressure at the mid height of the clay layer assuming that the stress beneath the footing is spread at a slope of 1H to 2V c. The pressure at the mid height of the clay layer [below the center of the footing using Bousinessq equation assuming point load
Figure B
H1
H2
Clay
t
Transcribed Image Text:Figure B H1 H2 Clay t
Table 01: Terzaghi's Bearing Capacity Factors
(General shear failure)
Na
N
Ne
(deg)
(deg)
Ne
Na
N
01
5.70
1.00
0.00
26
27.09
14.21
9.84
6.00
1.10
0.01
27
29.24
15.90
11.60
6.30
1.22
0.04
28
31.61
17.81
13.70
3
6.62
1.35
0.06
29
34.24
19.98
16.18
4.
6.97
1.49
0.10
30
37.16
22.46
19.13
7.34
1.64
0.14
31
40.41
25.28
22.65
6.
7.73
1.81
0.20
32
44.04
28.52
26.87
8.15
2.00
0.27
33
48.09
32.23
31.94
8.
8.60
2.21
0.35
34
52.64
36.50
38.04
9.
9.09
2.44
0.44
35
57.75
41.44
45.41
10
9.61
2.69
0.56
36
63.53
47.16
54.36
11
10.16
2.98
0.69
37
70.01
53.80
65.27
12
10.76
3.29
0.85
38
77.50
61.55
78.61
13
11.41
3.63
1.04
39
85.97
70.61
95.03
14
12.11
4.02
1.26
40
95.66
81.27
115.30
15
12.86
4.45
1.52
41
106.80
93.85
140.50
16
13.68
4.92
1.82
42
119.70
108.80
172.00
17
14.60
5.45
2.18
43
134.60
126.50
211.60
18
15.12
6.04
2.59
44
151.95
147.70
261.60
19
16.56
6.70
3.07
45
172.30
173.30
325.30
20
17.69
7.44
3.64
46
196.20
204.20
407.10
21
18.92
8.26
4.31
47
224.60
241.80
512.80
22
20.27
9.19
5.09
48
258.30
287.90
650.70
23
21.75
10.23
6.00
49
298.70
344.60
831.99
24
23.36
11.40
7.08
50
347.50
415.10
1072.80
25
25.13
12.72
8.34
Transcribed Image Text:Table 01: Terzaghi's Bearing Capacity Factors (General shear failure) Na N Ne (deg) (deg) Ne Na N 01 5.70 1.00 0.00 26 27.09 14.21 9.84 6.00 1.10 0.01 27 29.24 15.90 11.60 6.30 1.22 0.04 28 31.61 17.81 13.70 3 6.62 1.35 0.06 29 34.24 19.98 16.18 4. 6.97 1.49 0.10 30 37.16 22.46 19.13 7.34 1.64 0.14 31 40.41 25.28 22.65 6. 7.73 1.81 0.20 32 44.04 28.52 26.87 8.15 2.00 0.27 33 48.09 32.23 31.94 8. 8.60 2.21 0.35 34 52.64 36.50 38.04 9. 9.09 2.44 0.44 35 57.75 41.44 45.41 10 9.61 2.69 0.56 36 63.53 47.16 54.36 11 10.16 2.98 0.69 37 70.01 53.80 65.27 12 10.76 3.29 0.85 38 77.50 61.55 78.61 13 11.41 3.63 1.04 39 85.97 70.61 95.03 14 12.11 4.02 1.26 40 95.66 81.27 115.30 15 12.86 4.45 1.52 41 106.80 93.85 140.50 16 13.68 4.92 1.82 42 119.70 108.80 172.00 17 14.60 5.45 2.18 43 134.60 126.50 211.60 18 15.12 6.04 2.59 44 151.95 147.70 261.60 19 16.56 6.70 3.07 45 172.30 173.30 325.30 20 17.69 7.44 3.64 46 196.20 204.20 407.10 21 18.92 8.26 4.31 47 224.60 241.80 512.80 22 20.27 9.19 5.09 48 258.30 287.90 650.70 23 21.75 10.23 6.00 49 298.70 344.60 831.99 24 23.36 11.40 7.08 50 347.50 415.10 1072.80 25 25.13 12.72 8.34
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