Foundation Ground Conditions

The values and properties indicated in the table below can also be used instead of the bearing capaicty equations above. These values are given only as estimated values for preliminary analysis, for its respective soil materials. The values should only be used for scheme design calculations.

Soil Material

SPT, N Value

Undrained shear strength, C (kN/m^2)

Assumed Bearing Capacity, qallow

Sand

N

 

10N or 10N/2 if submerged

Stiff Clay

 

C

5.14 C/3

Rock

N

 

10N or assumed 3000 kPa with FOS = 3