Guidelines for seismic design and verification of masonry infills in RC buildings

This paper summarizes key aspects of the Guidelines for the Seismic Design and Verification of Masonry Infill Walls in Reinforced Concrete (RC) Buildings, developed through research coordinated by eight Italian institutions and mainly supported by DPC-Reluis. The Guidelines, primarily intended for RC structures, provide design and detailing criteria for masonry infills that interact with the surrounding frame. Applicable to ordinary buildings with typical story heights, they address different infill typologies, non-ductile, reinforced, and ductile, and propose modelling strategies (simplified and detailed) for both linear and nonlinear analysis. Particular emphasis is placed on in-plane displacement checks, local effects on RC elements, out-of-plane resistance evaluation (including in-plane/out-of-plane interaction), and the impact of infills on global structural irregularities. The Guidelines aim to support the seismic design and verification of masonry infills, complementing Eurocodes and Italian standards (NTC2018).