Experiences from the response of structures during earthquakes and the nature of pastrnearthquakes themselves have taught designers that ductility is one of the important el-rnements in seismic resistant design. When a structure is said to be ductile it denotesrnthat the structure possesses the ability to dissipate energy through plastic deformations.rnDesigning buildings to resist earthquake induced forces elastically results in an uneco-rnnomical construction. On top of that, the earthquake which the structure is designed tornwithstand may not occur during its lifetime. But engineering is about economy as muchrnas safety. Generally speaking, structural design is nding a balance between these two keyrnelements and designing economical structures without compromising safety. Nonetheless,rnin the process of signi cantly dissipating energy it may be necessary to accept some dam-rnages in predetermined locations. These locations are expected to possess the requiredrnductility and rotation capacities to exhibit the desired behaviour. Here is where thernstrong-column-weak-beam concept comes into play which, as the name implies, bases itsrnphilosophy on providing columns with exural capacities that are greater than that ofrnbeams. This is to avoid soft storey failure that can a ect the stability of a structure; butrnthe failure of beams usually has a localized e ect. Shear capacities of members are alsornto be greater than their exural capacities so that shear failure, a brittle failure, may notrnprecede the ductile and more preferable exural failure. The capacity design method isrnbased on these concepts.rnIn this research, software for the implementation of the capacity design process of re-rninforced concrete plane frames is presented. Design rules for capacity design were basedrnon those described in the 2015 Ethiopian Building Code (Speci cally ES EN 1990, ES ENrn1992 and ES EN 1998). The software generally performs analysis, regular design and ca-rnpacity design. It automates the reanalysis and redesign of failed members after increasingrntheir sections using the preset increment value. It also automatically converts continuousrnreinforcement areas to discrete number of bars (or bar center-to-center spacings in casernof shear reinforcing) for the program determined bar diameter.