Pub Date : 1999-04-01DOI: 10.1177/109719639902200409
M. Kumaran
Moisture diffusivity is a transport property that is frequently used in the hygrothermal analysis of building envelope components. This property is de pendent on the local moisture content. The experiments that lead to the detailed in formation on the dependence of diffusivity on moisture content are often very so phisticated. However, two recent exercises, as a part of the activities of an International Energy Agency Annex, have shown that a correct estimate of the mag nitude of the moisture diffusivity can provide useful information with regard to its application in hygrothermal analysis. This technical note presents results from a sim ple moisture absorption measurement that led to a good estimate of the moisture diffusivity of building materials. Results from measurements on a sample of spruce are presented.
{"title":"Moisture Diffusivity of Building Materials from Water Absorption Measurements","authors":"M. Kumaran","doi":"10.1177/109719639902200409","DOIUrl":"https://doi.org/10.1177/109719639902200409","url":null,"abstract":"Moisture diffusivity is a transport property that is frequently used in the hygrothermal analysis of building envelope components. This property is de pendent on the local moisture content. The experiments that lead to the detailed in formation on the dependence of diffusivity on moisture content are often very so phisticated. However, two recent exercises, as a part of the activities of an International Energy Agency Annex, have shown that a correct estimate of the mag nitude of the moisture diffusivity can provide useful information with regard to its application in hygrothermal analysis. This technical note presents results from a sim ple moisture absorption measurement that led to a good estimate of the moisture diffusivity of building materials. Results from measurements on a sample of spruce are presented.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127128878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-04-01DOI: 10.1177/109719639902200404
Over the past ten years, sigmficant numbers of low-rise multi-umt wood frame residential buildings in coastal British Columbia have been plagued with envelope performance problems. The problems have included water penetration, damage to cladding systems and rotting and decay of wood components. The city of Vancouver, the National Standing Committee on Small Buildings and other industry groups have responded to the problem in various ways, and stakeholders have estabhshed the Building Envelope Research Consortium (BERC) to monitor this issue. The objective of this 1996 CMHC study was to examine the relationship between the building envelope problems and their potential causes. The findings would be used to help identify key aspects of the design, construction and operations and maintenance processes leading to the problems, and
{"title":"Report from CMHC: Survey of Building Envelope Failures in the Coastal Climate of British Columbia","authors":"","doi":"10.1177/109719639902200404","DOIUrl":"https://doi.org/10.1177/109719639902200404","url":null,"abstract":"Over the past ten years, sigmficant numbers of low-rise multi-umt wood frame residential buildings in coastal British Columbia have been plagued with envelope performance problems. The problems have included water penetration, damage to cladding systems and rotting and decay of wood components. The city of Vancouver, the National Standing Committee on Small Buildings and other industry groups have responded to the problem in various ways, and stakeholders have estabhshed the Building Envelope Research Consortium (BERC) to monitor this issue. The objective of this 1996 CMHC study was to examine the relationship between the building envelope problems and their potential causes. The findings would be used to help identify key aspects of the design, construction and operations and maintenance processes leading to the problems, and","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124609279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-04-01DOI: 10.1177/109719639902200405
M. E. Waltz, Peter E. Nelson
WITHIN THE CONSTRUCTION industry, considerable disagreement exists with regard to the choice of an appropriate building paper for use beneath wood siding and shingles in light-frame wood construction. Asphalt-impregnated felt papers, spun-bonded polyethylene, perforated high-density polyethylene films, &dquo;water-resistant&dquo; sheathings, and red rosin felt papers all have their advocates. Unfortunately, building designers frequently specify some of these products that subsequently prove to be incapable of resisting water penetration. A few designers even insist that wood siding alone forms a weatherproof barrier and that you shouldn’t need to install building paper if you have a &dquo;good coat of paint.&dquo; Surface-sealed cladding systems eventually, if not initially, allow water to penetrate beyond the surface layer. Wood siding is no exception. Building paper for application beneath wood siding must be capable of retarding the migration of liquid water before it damages interior finishes and concealed wall components. Manufacturers’ claims and laboratory water test results
{"title":"Wood Siding Weather Protection: Don't Get Caught in the Rain without It","authors":"M. E. Waltz, Peter E. Nelson","doi":"10.1177/109719639902200405","DOIUrl":"https://doi.org/10.1177/109719639902200405","url":null,"abstract":"WITHIN THE CONSTRUCTION industry, considerable disagreement exists with regard to the choice of an appropriate building paper for use beneath wood siding and shingles in light-frame wood construction. Asphalt-impregnated felt papers, spun-bonded polyethylene, perforated high-density polyethylene films, &dquo;water-resistant&dquo; sheathings, and red rosin felt papers all have their advocates. Unfortunately, building designers frequently specify some of these products that subsequently prove to be incapable of resisting water penetration. A few designers even insist that wood siding alone forms a weatherproof barrier and that you shouldn’t need to install building paper if you have a &dquo;good coat of paint.&dquo; Surface-sealed cladding systems eventually, if not initially, allow water to penetrate beyond the surface layer. Wood siding is no exception. Building paper for application beneath wood siding must be capable of retarding the migration of liquid water before it damages interior finishes and concealed wall components. Manufacturers’ claims and laboratory water test results","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125307832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-04-01DOI: 10.1177/109719639902200402
We have entered a new era in which brains count far more than brawn, and old ways of doing things are under constant scrutiny. We are more dependent on innovation than ever: not only in technology, but in the quest for equality, secu rity and peace....
{"title":"Royal Bank Letter Published by Royal Bank of Canada","authors":"","doi":"10.1177/109719639902200402","DOIUrl":"https://doi.org/10.1177/109719639902200402","url":null,"abstract":"We have entered a new era in which brains count far more than brawn, and old ways of doing things are under constant scrutiny. We are more dependent on innovation than ever: not only in technology, but in the quest for equality, secu rity and peace....","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133096120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-04-01DOI: 10.1177/109719639902200406
K. Liu, R. J. Booth
The results indicated that commonly used foam plastic roof msula tions will be damaged if exposed to foot traffic, and that their protection with fi brous overlay boards as recommended by roofing contractor associations [1,2] con tinues to be good roofing practice. The results also indicated that finished roof surfaces will be damaged if exposed to frequent roof traffic and that surface protec tion of the membrane is good roofing practice.
{"title":"Damage to Thermal Insulation Foams in Low-Slope Roof Systems Caused by Simulated Foot Traffic","authors":"K. Liu, R. J. Booth","doi":"10.1177/109719639902200406","DOIUrl":"https://doi.org/10.1177/109719639902200406","url":null,"abstract":"The results indicated that commonly used foam plastic roof msula tions will be damaged if exposed to foot traffic, and that their protection with fi brous overlay boards as recommended by roofing contractor associations [1,2] con tinues to be good roofing practice. The results also indicated that finished roof surfaces will be damaged if exposed to frequent roof traffic and that surface protec tion of the membrane is good roofing practice.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"515 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123072461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-04-01DOI: 10.1177/109719639902200408
M. H. Hansen, G. Houvenaghel, M. Janz, M. Krus, Kenneth Strømdahl
The results of an interlaboratory comparison of the measurement of apparent density, solid density, open porosity and retention curves are presented. Baumberger sandstone and Sander sandstone were used as test materials. Repeatability standard deviation and reproducibility standard deviation for the measurement of apparent density, solid density, open porosity and retention curve moisture content have been estimated from the results of the interlaboratory com parison. The statistical analysis was made along the guidelines given in ISO 5725-2.
{"title":"Interlaboratory Comparison of the Measurement of Retention Curves","authors":"M. H. Hansen, G. Houvenaghel, M. Janz, M. Krus, Kenneth Strømdahl","doi":"10.1177/109719639902200408","DOIUrl":"https://doi.org/10.1177/109719639902200408","url":null,"abstract":"The results of an interlaboratory comparison of the measurement of apparent density, solid density, open porosity and retention curves are presented. Baumberger sandstone and Sander sandstone were used as test materials. Repeatability standard deviation and reproducibility standard deviation for the measurement of apparent density, solid density, open porosity and retention curve moisture content have been estimated from the results of the interlaboratory com parison. The statistical analysis was made along the guidelines given in ISO 5725-2.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125741373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-04-01DOI: 10.1177/109719639902200401
Mark Bomberg
In June 1998, the commission of inquiry into the quality of condominium construction in British Columbia submitted a report* entitled &dquo;The Renewal of Trust m Residential Construction.&dquo; The report contains three chapters: The Problem, The framework of Residential Construction, Plan for Action. This report contains eighty-two specific recommendations dealing with such issues as the role of the provincial government, building codes, municipal approval and inspection process, the role of developer/bmlder, roles of the architect, engineer, labor force, warranty programs, CMHC and federal government, financial institutions, management compames, and the legal system. It is probably one offew documents, which briefly and to the point, describes the construction process with the view to highlighting the causes of water
{"title":"Letter From the Editor","authors":"Mark Bomberg","doi":"10.1177/109719639902200401","DOIUrl":"https://doi.org/10.1177/109719639902200401","url":null,"abstract":"In June 1998, the commission of inquiry into the quality of condominium construction in British Columbia submitted a report* entitled &dquo;The Renewal of Trust m Residential Construction.&dquo; The report contains three chapters: The Problem, The framework of Residential Construction, Plan for Action. This report contains eighty-two specific recommendations dealing with such issues as the role of the provincial government, building codes, municipal approval and inspection process, the role of developer/bmlder, roles of the architect, engineer, labor force, warranty programs, CMHC and federal government, financial institutions, management compames, and the legal system. It is probably one offew documents, which briefly and to the point, describes the construction process with the view to highlighting the causes of water","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128318359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-04-01DOI: 10.1177/109719639902200411
M. Rousseau
{"title":"An Overview of the Survey of Building Envelope Failures in the Coastal Climate of British Columbia, Performed by Morrisson-Hershfield Limited for CMHC (1996)","authors":"M. Rousseau","doi":"10.1177/109719639902200411","DOIUrl":"https://doi.org/10.1177/109719639902200411","url":null,"abstract":"","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115007440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-01-01DOI: 10.1177/109719639902200305
Jen-Yu Kuo, K. Chung
The evaluation of various ventilation strategies for optimal ther mal comfort design in terms of predicted mean vote index was investigated. The major parameter is the inlet/outlet diffuser's locations in the occupied region. The location effects of the inlet and outlet diffusers at the ceiling/walls on thermal com fort were examined every 0 4 meter. Eight different air distribution systems includ ing single inlet-single outlet and single inlet-double outlets arrangements were studied in an indoor environment. Also, an experimental validation was conducted. The comparison results between prediction and test are quite good.
{"title":"The Effect of Diffuser's Location on Thermal Comfort Analysis with Different Air Distribution Strategies","authors":"Jen-Yu Kuo, K. Chung","doi":"10.1177/109719639902200305","DOIUrl":"https://doi.org/10.1177/109719639902200305","url":null,"abstract":"The evaluation of various ventilation strategies for optimal ther mal comfort design in terms of predicted mean vote index was investigated. The major parameter is the inlet/outlet diffuser's locations in the occupied region. The location effects of the inlet and outlet diffusers at the ceiling/walls on thermal com fort were examined every 0 4 meter. Eight different air distribution systems includ ing single inlet-single outlet and single inlet-double outlets arrangements were studied in an indoor environment. Also, an experimental validation was conducted. The comparison results between prediction and test are quite good.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"260 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122756372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1999-01-01DOI: 10.1177/109719639902200302
~ sheet steel (without profile), 0.38 mm thick,installed under the wall plates A fourth option is to use a double-stud wall with a narrow gap between the frames. The NBC does not require a fire stop if the concealed air space is 25 mm or less. In the case of the double-stud wall assemblies tested in this study, the individual study assemblies were filled with insulation and the two stud assemblies were separated by gaps of various widths to determine the effect of these gaps on the propagation of the flame in the cavity.
{"title":"Notes from IRC/NRC","authors":"","doi":"10.1177/109719639902200302","DOIUrl":"https://doi.org/10.1177/109719639902200302","url":null,"abstract":"~ sheet steel (without profile), 0.38 mm thick,installed under the wall plates A fourth option is to use a double-stud wall with a narrow gap between the frames. The NBC does not require a fire stop if the concealed air space is 25 mm or less. In the case of the double-stud wall assemblies tested in this study, the individual study assemblies were filled with insulation and the two stud assemblies were separated by gaps of various widths to determine the effect of these gaps on the propagation of the flame in the cavity.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"361 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125652203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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