Soil Mechanis

[khan4]

Is this necessary to deduct [b]Always the pore water water pressure (u) from saturated soils while solving numerical problems? What is the Principal Rule to be applied on deducting Pore water Pressure?

 

[BigH]

Please review basic geotechnical texts such as Craig or Conduto.

As an example, you would NOT deduct the pore water pressures (phreatic surface head) when determining the driving forces of a slice in a slope stability problem but you would when you are determining the resisting forces. For consolidation testing (i.e., settlement computations) you would use the effective unit weights.

 

[khan4]

Thank you.