37º IAHS World Congress on Housing: - Universidad de Cantabria

XXXVII <strong>IAHS</strong><strong>World</strong> <strong>Congress</strong> on HousingOctober 26 – 29, 2010, Santander, SpainCODE: 154FAILURES IN HOT-DIP GALVANIZED STRUCTURALSTEELSJaime Carpio, José A. Casado, José A. Álvarez and Federico Gutiérrez-SolanaDivision of Materials Science and EngineeringUniversity of Cantabria, Spaine-mail: carpioj@unican.esKey words: galvanizing, failures, good practice recommendations, pathology of the construction.AbstractThis paper analyzes occasional failure caused in hot-dip galvanized structural steels. Thesefailures are originated by the simultaneous effect of the following factors:• Residual stresses in steels promoted by welds, drilling and/or cold working.• Material susceptibility.• Low melting point elements in the galvanizing bath, e.g. Sn.As a consequence of this study, a group of good practice recommendations for structuralengineers and galvanizers are proposed in order to reduce or eliminate the failures which arepotentially dangerous in buildings and other constructions.37º <strong>IAHS</strong> <strong>World</strong> <strong>Congress</strong> On Housing Science 97