Assessment of wind load calculations according to EUROCODE 1, TCVN 2737:2023, and ASCE 7-22

Abstract

Wind load is a crucial factor in structural design, determined by standards such as Eurocode (EN 1991-1-4), ASCE 7-22, TCVN 2737:2023, and others. The calculation of wind load depends on various factors, including wind velocity, terrain coefficient, height, dynamic coefficient, exposed surface area, structural characteristics, and gust effect factor. This paper presents the procedure for calculating wind load according to these standards, utilizing Etabs to apply the load using two methods: assignment to the geometric center (Diaphragm) and assignment to wall panels (Shell Object). The results from Etabs are cross-checked using an Excel spreadsheet to verify accuracy. The study indicates that results from Etabs and Excel are reliable according to Eurocode and ASCE 7-22. However, when compared with TCVN 2737:2023, significant discrepancies are observed. Notably, Etabs consistently produces higher results than the spreadsheet, while in terms of displacement, Eurocode yields the highest values.