150010 20251017144558.0 doi 10.1016/j.buildenv.2020.106850 sideral 117751 ART-2020-117751 eng Pérez-Bella, José M. Universidad de Zaragoza (orcid)0000-0003-4278-6622 Avoiding the need to directionally determine the exposure to rainwater penetration for façade designs 2020 Access copy available to the general public Unrestricted The damaging effects caused by the penetration of rainwater into building façades require considering for their design the exposure to the two main climatic factors inducing this penetration: wind-driven rain and the simultaneous wind pressure. The characterisation of these exposures for each possible façade orientation of a building requires analysing exhaustive wind direction records, which significantly increases the calculation effort and prevents calculation in locations without such records. This study examines the possibility to avoid this directional analysis, equally obtaining a functional and reliable exposure characterisation. For this purpose, daily climatic datasets were analysed from 920 weather stations subjected to various environmental and topographic conditions in Mexico, Norway and Spain, and the directional and scalar exposures to wind-driven rain and driving-rain wind pressure were determined at each location. The results show that the maximum directional exposure can be adequately approximated using the scalar exposure value, without the use of wind direction records. Considering the usual constructive practice of using a single façade design for the entire building, this simple and functional characterisation of the expected exposure on the most unfavourable orientation provides a significant support for the design decisions of practitioners. info:eu-repo/grantAgreement/ES/MICINN/PGC2018-098459-B-I00 info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 6.456 2020 CONSTRUCTION & BUILDING TECHNOLOGY 6 / 66 = 0.091 2020 Q1 T1 ENGINEERING, ENVIRONMENTAL 12 / 53 = 0.226 2020 Q1 T1 ENGINEERING, CIVIL 6 / 136 = 0.044 2020 Q1 T1 1.736 2020 Building and Construction 2020 Q1 Geography, Planning and Development 2020 Q1 Environmental Engineering 2020 Q1 Civil and Structural Engineering 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Domínguez-Hernández, Javier Universidad de Zaragoza (orcid)0000-0002-3776-9791 Cano-Suñén, Enrique Universidad de Zaragoza (orcid)0000-0001-5137-2478 Martínez-Martínez, Juan E. del Coz-Díaz, Juan J. 5004 510 Universidad de Zaragoza Dpto. Ingeniería Mecánica Area Ingeniería Construcción 176 (2020), 106850 [1-11 pp.] Build. environ. Building and Environment 0360-1323 5360857 http://zaguan.unizar.es/record/150010/files/texto_completo.pdf Postprint 1664519 http://zaguan.unizar.es/record/150010/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:150010 articulos driver 2025-10-17-14:13:45 ARTICLE