Study of the stability of the structure of the Cathedral of Seu d'Urgell by means of graphic statics

The thesis will consists in the study of the structure of the nave of the Cathedral of Seu d'Urgell, in the province of Lleida in Spain, by means of the graphic statics method. The structure of the nave of the cathedral is showing at present significant deformation and some damage, and there is some concern about its long term stability under gravity loads and under earthquake. structure's real stability and the need for a possible strengthening intervention.