Pile Design and Construction Practice, Fifth edition

Very loose

0

10

20

30

40

50

60

70

Standard penetration resistance

N, blows/300 mm

Angle of shearing resistance f, degrees

28 30 32 34 36 38 40 42 44

Loose

Medium dense Dense Very dense

Figure 4.10Relationship between standard penetration test N-values and angle of shearing resistance
(after Peck et al.(4.18)).

Cone resistance, qc (MN/m^2 )

100

0 102030405060

200

300

400

500

32 ° 34 ° 36 ° 38 ° 40 °

42 °

44 °

= 46 °

Vertical effective stress

s

vo

(KN/m

2 )



Figure 4.11Relationship between angle of shearing resistance and cone resistance for an
uncemented, normally consolidated quartz sand (after Durgonoglu and Mitchell(4.19)).