Geotechnical Engineering

DHARM

BEARING CAPACITY 583

1100

1000

900

800

700

600

500

400

300

200

100

01 23 4 56

Width of footing, m

Allowable bearing pressure, kN/m (Settlement > 40 mm)

2

N=60

55

50

45

40

35

30

25

20

15

10

(^5) Loose
Medium
Dense
Very dense
Fig. 14.21 Allowable bearing pressure for 40 mm settlement from SPT values
(After Terzaghi and Peck, 1948)
1120
960
800
640
480
320
160
01 23 4 56
Width of footing, m
Allowable bearing pressure, kN/m
(Settlement > 40 mm)
2
N=60
50
40
30
20
10
Medium
Dense
Very dense
Loose
Fig. 14.22 Allowable soil pressure for 40 mm settlement from SPT values
(After Peck, Hanson, and Thornburn)