BS-Theory: Area loads -Teil 2

For at-rest earth pressure, the area loads are calculated by increasing by the factor k0/kah in compliance with DIN 4085 Section 6.4.3.

Alternatively, it is possible to determine the demands placed on a wall from area loads using the theory of elastic half-space. The two load concentration factors "3" and "4" can be taken into consideration (see also the following Figure).

• For over consolidated, cohesive soils the concentration factor "3" applies, where:
  e_op = q/π · (β₂ - β₁ + cosβ₁ · sinβ₂ - cosβ₂ · sinβ₂)

• For non-cohesive soils, or for cohesive but not over consolidated soils, the concentration factor "4" applies, where:
  e_op = q/4 · (sin³β₂ - sin³β₁)

Regarding the kind of earth pressure, area loads can be defined independent of the global preferences (see menu item "Editor 1/Type of earth pressure").