The aim of this thesis is to investigate the behavioral differences of walls that have different load transfer mechanisms and identify a simple engi- neering model for a construction joint that connects these two different wall types. Within the text; First, the problem description is provided among with a simple yet reliable soil modeling for finite element method, to illustrate the excavation work. Then, six engineering models have been constructed and analyzed and results are compared. Phased excavation in layered soil is performed by shell and interface elements provided by the FEM package Diana 10.1. In addition, the section forces are estimated for an upper and lower bound given for different wall mechanisms. To conclude, the criti- cal construction stage and the critical depths are reached. Expected section forces are computed and compared with the capacity of the critical con- struction joint. This thesis highlights the reliable and simple modeling of a laterally supported phased excavation analysis. Furthermore, it outlines the factors effecting the resulting forces from different load transfer mechanisms and concludes that the critical section subject to this thesis is safe with the given conditions. . . .