Soil Cohesion

  • Commonly, soil is not homogeneous through the entire required depth of installation; a soil behavior analysis must be done in order to be able to calculate the theoretical ultimate capacity and varies quite a lot depending on the site conditions.
  • Cohesion is the term used for shear strength that exists in the absence of compressive stress.
  • Non-Cohesive Soil (sand and gravel) shear strength exists only in the presence of compressive stress
  • Cohesive Soil (clay) is composed of particles that adhere to each other even in the absence of compressive stress