Prediction Equations for Out-of-Plane Capacity of Unreinforced Masonry Infill Walls Based on a Macroelement Model Parametric Analysis

In the seismic performance assessment of reinforced concrete (RC) frames, a reliable estimation capacity unreinforced masonry (URM) infill walls is utmost importance to ensure structural safety conditions. With particular attention out-of-plane (OoP) URM after in-plane (IP) damage, issue defining analytical prediction models for an ongoing study. this paper, empirical equations are proposed evaluation infilled frame’s OoP capacity, with or without IP based on extensive numerical parametric analysis, focusing influence key parameters that govern mechanical model. The walls, considering variation in their geometrical and properties, was evaluated by using macroelement strength found be largely influenced compressive strength, slenderness ratio, aspect and, additionally, level damage. reduction stiffness due damage governed ratio wall. reliability model also proved comparisons experimental results some already available literature. provide estimates strongly indicating suitability adopted capturing response infills.