Zweck Theory
The Zweck and Bowles methods were developed for the analysis of anchor roots - they depend mainly on the geostatic stress in the location of the micropile root. These methods arise from the same priciples - the pressure magnitude is however reduced using the coefficient of pressure at rest Ko.
where: | d | - | root diameter |
l | - | root length | |
Ko | - | magnitude of pressure at rest | |
σz | - | average geostatic stress at the micropile root | |
φ | - | average value of friction angle at the micropile root |