Recent history has documented the premature failures of building envelopes in various regions-in North America most notably on the West Coast and the East Coast. The MEWS Consortium, a project undertaken by IRC and its partners, has addressed this issue in detail. The strategy for answering these questions was based on predicting the moisture management performance of wall systems as a function of climate, wall construction, and material properties through mathematical modeling. A key task was to determine what years to use as input for the simulations. Moisture Reference Years were selected using a Moisture Index approach developed for MEWS. This paper will develop the approach and compare it with other methods of selecting Moisture Reference Years for hygrothermal simulations.
/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1177/109719603036210Journal of Thermal Envelope & Building Science, 27, 2, pp. 151-178, 2003-10-01 A Moisture index to characterize climates for building envelope design Cornick, S. M.; Dalgliesh, W. A. with lab testing and hygrothermal modeling to understand and deal with these problems. The method proposed in this paper was used in MEWS to 1) characterize climate with respect to the risk of moisture related building envelope problems, 2) select locations of interest for a detailed hygrothermal parametric study, and 3) to select moisture reference years for the parametric study (not covered in this paper). This paper describes a method proposed for mapping North American climatic regions according to moisture loading on one hand, and the potential for drying on the other. The composite Moisture Index can be used either with hourly records or summary data, and shows promise for application to specific problems, such as decay or corrosion, depending on the nature and mechanisms of the problem being investigated.Keywords: wall moisture; annual rainfall; climate classification; rain wetting; drying potential; moisture index; driving rain; directional driving rain index; decay hazard; Review Approaches to Climate Classification for ConstructionThere are several different schemes for classifying the world's climate, most of them possessing genuine merit. Almost all of the schemes of climate classification have subdivisions and boundaries partly based upon temperature and rainfall parameters which are not meaningful in themselves, but have significance in terms of some non-climatic feature, such as vegetation or human habitability. If one disregards non-climatic phenomena, it is difficult to provide meaningful temperature-rainfall limits of climatic types. The majority of classification schemes, therefore, are of an applied character. One basis for grouping climate schemes is to divide them into genetic (concerning origin) and empirical types. In genetic classifications an attempt is made to group climates into the causative factors (e.g. air masses, wind zones) that may be responsible for them. In empirical classifications, origin is discarded as an organizing principle, and observation and experience provide the essential elements for climatic differentiation. The Köppen cla...
/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1520/JAI101446Journal of ASTM International, 6, 9, pp. 1-28, 2009-10-01 Towards development of a performance standard for assessing the effectiveness of wall-window interface details to manage rainwater intrusion Lacasse, M. A.; Cornick, S. M.; Rousseau, M. Z.; Manning, M. M.; Ganapathy, G.; Nicholls, M.; Plescia, S. The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. For more information visit http://laws.justice.gc.ca/en/showtdm/cs/C-42Les renseignements dans ce document sont protégés par la Loi sur le droit d'auteur, par les lois, les politiques et les règlements du Canada et des accords internationaux. Ces dispositions permettent d'identifier la source de l'information et, dans certains cas, d'interdire la copie de documents sans permission écrite. ABSTRACT:Laboratory water spray testing identifies the performance of a component or assembly under a specified set of simulated wind-driven rain conditions. Well-developed water spray test protocols can also help identify were an assembly is vulnerable to water entry, the test loads at which water entry occurs, and whether the water entry is managed by the installation details in such a way that it does not result in within-wall damage. This paper presents a proposed laboratory test protocol for assessing the effectiveness of wall-window interface details with regard to management of rainwater, and provides a rationale for a performance-based approach to the evaluation method. An overview of the test approach is provided and details of the test apparatus and test specimen are given, including information on implementation of the test method. Examples of testing performed according to the proposed protocol are provided. Finally additional tests for evaluating the performance of installation details are suggested. The additional tests are for field evaluation of installation details, and for laboratory evaluation of installation details with regard to the risk of condensation along window frames.KEYWORDS: installation details, laboratory testing, performance test, rainwater int...
/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1177/109719603036210Journal of Thermal Envelope & Building Science, 27, 2, pp. 151-178, 2003-10-01 A Moisture index to characterize climates for building envelope design Cornick, S. M.; Dalgliesh, W. A. with lab testing and hygrothermal modeling to understand and deal with these problems. The method proposed in this paper was used in MEWS to 1) characterize climate with respect to the risk of moisture related building envelope problems, 2) select locations of interest for a detailed hygrothermal parametric study, and 3) to select moisture reference years for the parametric study (not covered in this paper). This paper describes a method proposed for mapping North American climatic regions according to moisture loading on one hand, and the potential for drying on the other. The composite Moisture Index can be used either with hourly records or summary data, and shows promise for application to specific problems, such as decay or corrosion, depending on the nature and mechanisms of the problem being investigated.Keywords: wall moisture; annual rainfall; climate classification; rain wetting; drying potential; moisture index; driving rain; directional driving rain index; decay hazard; Review Approaches to Climate Classification for ConstructionThere are several different schemes for classifying the world's climate, most of them possessing genuine merit. Almost all of the schemes of climate classification have subdivisions and boundaries partly based upon temperature and rainfall parameters which are not meaningful in themselves, but have significance in terms of some non-climatic feature, such as vegetation or human habitability. If one disregards non-climatic phenomena, it is difficult to provide meaningful temperature-rainfall limits of climatic types. The majority of classification schemes, therefore, are of an applied character. One basis for grouping climate schemes is to divide them into genetic (concerning origin) and empirical types. In genetic classifications an attempt is made to group climates into the causative factors (e.g. air masses, wind zones) that may be responsible for them. In empirical classifications, origin is discarded as an organizing principle, and observation and experience provide the essential elements for climatic differentiation. The Köppen cla...
/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1016/j.buildenv.2008.07.002 Building and environment, 30, pp. 1-10, 2008-10-20 Adapting rain data for hygrothermal modeling Cornick, S. M.; Dalgliesh, A.http://irc.nrc-cnrc.gc.ca Adapting rain data for hygrothermal modeling NRCC-50832Cornick, S.M.; Dalgliesh, A. 2008-10-01A version of this document is published in / Une version de ce document se trouve dans: Building and environment, v. 30, 2008 The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. For more information visit http://laws.justice.gc.ca/en/showtdm/cs/C-42Les renseignements dans ce document sont protégés par la Loi sur le droit d'auteur, par les lois, les politiques et les règlements du Canada et des accords internationaux. Ces dispositions permettent d'identifier la source de l'information et, dans certains cas, d'interdire la copie de documents sans permission écrite. Pour obtenir de plus amples renseignements : http://lois.justice.gc.ca/fr/showtdm/cs/C-42 AbstractDesign for moisture control has now become an established part of building envelope design. Hygrothermal modeling tools, capable of simulating moisture transfer in materials, are a key element of the design process. There are three principle methods of moisture transfer in envelopes. They are, in order of magnitude, capillary action, vapour convection, and vapour diffusion. Wind-driven rain has the potential to deposit large amounts of liquid water on the exterior surface, as well inside walls through rain penetration, providing a significant source for moisture transport.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.