Study of the foundations of the pillars of Seville's Cathedral

Abstract

This study is done in order to answer a double request. On one hand to know the typology of foundation and the typology of the bearing soil of pillars of the cathedral in Seville, and on the other hand to determine if the existing cracks have a geotechnical origin. The accomplished research let us know that foundation is 1m overwide relative to the column section, and 5.70 - 5.90 m deep. As regards bearing soil, its geotechnical characteristics have been proved, so it may be deduced that the long period (90 years) for the construction of pillars, vaults and decks, allowed a slow consolidation and drainage of soil that have avoided a possible collapse or fall. According to this conclusion, the research will continue focusing now on the study of the characteristics of pillars and on the possible reasons that have provoked the appearance of fissures. From a geoarchaeological point of view, significant data of the occupational level of this area have been obtained. There are important conclusions to be drawn from the accomplished research about the sequence of occupation of this area since 1,000 years B.C.