Stability of slopes according to Krey-Bishop / DIN 4084 The program makes it possible to compute slope failure mechanisms due to DIN 4084. The proofs demanded therein are performed for general soil-structure systems, which may include an arbitrary number of various elements and supporting components, e.g. anchors, nails, piles, loads, soil layers, construction stages etc. FIDES SlipCircle is compatible and uses the same data with other programs of the FIDES Geotechnics series.