EFECTIVES STREES

EFECTIVES STREES

1. Soil Bearing Load – It is the portion of the total stress that is actually transmitted between the solid soil particles, determining its strength and stability.

2. Influence of Water – It depends on pore pressure, as an increase in water content within the soil decreases the effective stress, potentially leading to issues like liquefaction or settlement.

   • Vertical Stress
     • It refers to the stress exerted by the weight of materials at a specific point in the soil. Equation: σν=-
   • Total Stress
     • It is the result of the sum of vertical forces applied to the soil. Equation: σt=yh1+y'h2
   • Horizontal Stress
     • It is the stress that acts in a lateral direction within the soil, resulting from the vertical load and its interaction with surrounding structures. Equation: σh=Κ- σν

3. Terzaghi's Principle – It is defined by the equation: σ'=σ-υ σ' : WHEN σ' is the effective stress; σ is the total stress; υ σ' is the pore pressure