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Improved assessment of wind-driven rain on building façade based on ISO standard with high-resolution on-site weather data

Title:

Improved assessment of wind-driven rain on building façade based on ISO standard with high-resolution on-site weather data

Ge, Hua, Chiu, Vincent, Stathopoulos, Ted and Souri, Firouzeh (2018) Improved assessment of wind-driven rain on building façade based on ISO standard with high-resolution on-site weather data. Journal of Wind Engineering & Industrial Aerodynamics, 176 . pp. 183-196.

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Official URL: https://doi.org/10.1016/j.jweia.2018.03.013

Abstract

Wind-Driven Rain (WDR) is one of the major moisture sources that cause building envelope failures. The quantity and spatial distribution of WDR are important considerations for durable building envelope designs and are essential boundary conditions for hygrothermal modelling. Within a comprehensive research program of quantifying WDR exposure of buildings and the effectiveness of overhang on reducing WDR wetting, a six-storey building located in Vancouver, Canada was instrumented for field WDR measurements. One of the challenges in field WDR measurements is the validity of on-site wind measurements. The accurate measurements of on-site wind conditions are essential for correlating WDR on façade with on-site weather conditions and for generating the spatial distribution correction factor required in the semi-empirical WDR models. This paper focuses on discussing the procedure necessary for proper on-site wind measurements for quantifying WDR on façade based on field and wind-tunnel measurements. The proper procedure to calculate the spatial distribution correction factor, namely wall factor according to ISO standard, and its impact on the accuracy of the ISO model is also discussed. The accuracy of ISO model can be significantly improved by using more detailed wall factors calculated based on high-resolution on-site wind and rain measurements.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Building, Civil and Environmental Engineering
Item Type:Article
Refereed:Yes
Authors:Ge, Hua and Chiu, Vincent and Stathopoulos, Ted and Souri, Firouzeh
Journal or Publication:Journal of Wind Engineering & Industrial Aerodynamics
Date:2018
Funders:
  • NSERC Strategic Research Network for Engineered Wood-based Building Systems (NEWBuildS)
  • BC Housing
  • Faculty of Engineering and Computer Science of Concordia University
Digital Object Identifier (DOI):10.1016/j.jweia.2018.03.013
ID Code:986028
Deposited By: THEODORE STATHOPOULOS
Deposited On:30 Oct 2019 12:33
Last Modified:15 Mar 2020 00:00
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