Identificação das principais alterações técnicas da ABNT NBR 8800:2024 em relação à ABNT NBR 8800:2008 para o dimensionamento de elementos de aço

Abstract

Updating technical standards in structural engineering is essential to incorporate scientific, technological, and practical advances into the structural design process, thereby ensuring greater safety and efficiency in buildings. In this context, this work aims to perform a comparative analysis of the design prescriptions for steel structures established by ABNT NBR 8800:2008 and ABNT NBR 8800:2024, with an emphasis on the changes introduced by the latter. The comparative process is based on the systematic identification of normative differences regarding calculation expressions, safety factors, instability criteria, and interaction models between internal forces. The adopted methodology includes a bibliographic review of specialized technical references on steel structures, direct analysis of the normative texts, and a comparison of design equations, highlighting the main conceptual and practical developments introduced by ABNT NBR 8800:2024 relative to the 2008 edition. The results are expected to contribute to a better understanding of the normative changes and to support structural engineers in the transition to the new standard, promoting increased safety, efficiency, and consistency in steel structure design.