Pérez-Bella, José M;
Domínguez-Hernández, Javier;
Orr, Scott;
Sanso-Navarro, Lucas;
Ayensa-Pardo, Alberto;
(2024)
A comprehensive approach to the performance-based design of facade solutions against rainwater penetration.
In:
Proceedings of the REHABEND 10th Euro-American Congress: Construction Pathology, Rehabilitation Technology and Heritage Management.
Construction Pathology, Rehabilitation Technology and Heritage Management (REHABEND): Gijon, Spain.
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Abstract
Rainwater penetration into building façades causes several issues, including material and structural weakening, reduction of their energy efficiency and negative health effects on occupants. Currently, the watertightness of building envelopes is characterised by international testing approaches, which recreate water supplies and pressure differences that do not represent the range of exposure combinations that can occur at each façade location and configuration. As a result, the choice of suitable façade systems for each situation has a qualitative and imprecise nature, leading to poorly optimised designs. This work expounds a comprehensive approach for the performance-based design of actual façades against rainwater penetration anywhere. For this purpose, it is determined the recurrence with which will occur, for each façade to be designed, the exposures tolerated by the façade solution during any watertighness test. This recurrence, characterised as a return period, defines the façade performance at its final operating conditions and depends on the exposure tested (the greater its magnitude and duration, the greater the severity and associate return period), on the site climatic conditions, and on the façade configuration (height and surroundings). The universal and quantitative nature of this design verification procedure is illustrated with examples of different building façades in two Spanish cities (Pontevedra and Málaga), within the framework of the HUEFAES research project (PID PID2021-122203OB-I00).
| Type: | Proceedings paper |
|---|---|
| Title: | A comprehensive approach to the performance-based design of facade solutions against rainwater penetration |
| Event: | REHABEND 10th Euro-American Congress: Construction Pathology, Rehabilitation Technology and Heritage Management |
| Location: | Gijon, Spain |
| Dates: | 7 May 2024 - 10 May 2024 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://www.rehabend.unican.es/2024/ |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Wind-driven rain; Building façades; Rainwater penetration; Performance-based design; Return period |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10180512 |
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