Evaluation of Response Reduction Factor for Un-reinforced Masonry-Infilled RC Buildings

The design of earthquake-resistant structures has been a challenge as well as a motivation for all designers. The design philosophy which includes seismic resistant idea by the nonlinear response of the structure via appropriate Response reduction factor (R). R is a most imperative number which illustrates the potential of the structure to dissipate energy through inelastic behavior. It grants the designer permission to apply a linear elastic force-based design for consideration of nonlinear (NL) behaviour and deformation limits. This R factor is unique and different on behalf of the type of structures and design. However, Indian Standards IS 1893: 2002 Agarwal and Shrikhande (Earthquake-resistant design of structures [1], 2010) gives the sole value of R based on the particular category of detailing and type of structures and design. The NL Static Analysis was used to evaluate R for G+5-story buildings with various infill wall conditions. These findings are noteworthy for Indian seismic design code which, at hand, does not capture into account the deviation in R.