The stone cantilevers rehabilitation of heritage buildings

Abstract

Abstract The aim of this article is to analyse multiple solutions for the stone cantilevers rehabilitation commonly found in heritage buildings. The stone cantilevers are arranged in the inner courtyards of historical buildings and ensure horizontal circulation. Throughout the article will analyse two categories of situations encountered in the rehabilitation practice: for the first situation the cantilever rehabilitation can be done after the stone plate demolition, and for the second situation the cantilever rehabilitation must be done without having the option of demolishing the flat plates. The difficulty of the intervention is given by the fact that the fixed ending restrain of the cantilever was ensured during the execution technology, the cantilever fixed in the masonry being ensured during the building of the wall. The rehabilitation of the stone cantilevers is conditioned by the fact that the fixed ending restrain point cannot be rebuild on the initial principles. This fact requires the adoption of rehabilitation principles based on a different approach to ensure the fixed end point. The proposed solutions solve both issues ensuring the required load capacity of the cantilever and ensuring the required level of fixed end restrain