With the inclusion of the Non — Linear Static Procedure (NSP) or pushover analysis into the Federal Emergency Management Agency Document 273 (Fema 273), the need for non — linear pushover analysis tools for structural design in seismic zones is apparent. Focusing on reinforced concrete structures, this entails the ability to perform the NSP on lateral force resisting systems consisting of moment frames, structural walls, or any combination of these. The authors are currently developing a pushover analysis tool, using an existing finite element program, which can accomplish these tasks. This paper details the steps in performing the NSP, compares preliminary results of the NSP with a full non — linear dynamic analysis, and discusses a simplified procedure to model shear deformations in reinforced concrete members.