Análise comparativa de fundações sob influência de diferentes tipos de solo e a importância da sondagem – um estudo de caso

Abstract

This study aimed to present the importance of the survey SPT (Standart Penetration Test) in determining soil characteristics, for the adequate dimensioning of foundations in civil construction projects. It is clear that inadequate execution of the survey can lead to serious problems in the foundations, causing pathologies in civil constructions. Soil classification directly influences the foundation and is a common cause of pathologies in the structure. The use of survey profiles from adjacent constructions, or from the same city, for different buildings is criticized, since, despite apparently similar soils, their characteristics can vary significantly, in addition to not meeting the standard. Therefore, the present study focuses on three buildings, with a simulated structure, analyzing their foundations in relation to the characteristics of the soils on which they were built. Survey reports are presented for each project, revealing variations between what was predicted in the reports and what was found during execution. These discrepancies resulted in changes to the foundations, causing unforeseen financial impacts for the construction company. This made it possible to highlight the significant influence of the survey SPT on the sizing of the foundations and highlight the importance of hiring reliable companies to carry out this crucial stage, in addition to investing more in the survey can avoid additional costs and delays in carrying out the work, highlighting the direct relationship between an adequate survey and the success of the foundation project.