Soil properties and state of the soil - Geotechnical Investigation and Design Tables - page 84

Table 7.12 Preconsolidation pressure from net cone tip resistance (from Mayne et al., 2002).

Net contact pressure P o u 0 kPa 100 200 500 1000 1500 3000 5000

−

Preconsolidation pressure P c kPa 50 100 250 500 750 1500 2500

•

For intact clays only.

•

For fissured clays P c = 1000 to 5000 with P o − u 0 = 600 to 4000 kPa.

Figure 7.2 Overconsolidation concept.