Pub Date : 1999-07-01DOI: 10.1177/109719639902300108
H. Künzel
and mixed climates. However, the low permeability of a traditional vapor retarder can be a severe drawback concerning the drying potential of the assembly in summer time. Because moisture is more harmful to the structure when temperatures are high, the evaporation of moisture from the assembly must be as effective as possible. Flexible vapor control means that the retarder is tight enough to avoid critical condensation in winter while being sufficiently vapor permeable in summer to guarantee a fast drying process by adapting its performance to the seasonal changes in environmental conditions. In this paper the principle of the smart retarder is explained and experiences from field tests are reported.
{"title":"Flexible Vapor Control Solves Moisture Problems of Building Assemblies—Smart Retarder to Replace the Conventional PE-Film","authors":"H. Künzel","doi":"10.1177/109719639902300108","DOIUrl":"https://doi.org/10.1177/109719639902300108","url":null,"abstract":"and mixed climates. However, the low permeability of a traditional vapor retarder can be a severe drawback concerning the drying potential of the assembly in summer time. Because moisture is more harmful to the structure when temperatures are high, the evaporation of moisture from the assembly must be as effective as possible. Flexible vapor control means that the retarder is tight enough to avoid critical condensation in winter while being sufficiently vapor permeable in summer to guarantee a fast drying process by adapting its performance to the seasonal changes in environmental conditions. In this paper the principle of the smart retarder is explained and experiences from field tests are reported.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"164 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116693129","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 : 1999-07-01DOI: 10.1177/109719639902300102
Samuel Johnson
A little bit of philosophy goes a long way in coping with the frustrations of modern living. It goes even farther in thinking clearly about public affairs. Peo ple today could do worse than to refer to the precepts of homespun wisdom. Those who don't know them by heart, as most folks once did, can always look them up.
{"title":"Royal Bank Letter Published by Royal Bank of Canada","authors":"Samuel Johnson","doi":"10.1177/109719639902300102","DOIUrl":"https://doi.org/10.1177/109719639902300102","url":null,"abstract":"A little bit of philosophy goes a long way in coping with the frustrations of modern living. It goes even farther in thinking clearly about public affairs. Peo ple today could do worse than to refer to the precepts of homespun wisdom. Those who don't know them by heart, as most folks once did, can always look them up.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121303743","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 : 1999-07-01DOI: 10.1177/109719639902300101
Mark Bomberg
{"title":"Letter From the Editor","authors":"Mark Bomberg","doi":"10.1177/109719639902300101","DOIUrl":"https://doi.org/10.1177/109719639902300101","url":null,"abstract":"","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126227054","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 : 1999-07-01DOI: 10.1106/YEYN-66QN-P0XK-1XVF
I. Samuelson
{"title":"INFORMATION AND TECHNOLOGY TRANSFER, Is There a Shortage of Knowledge in the Industry?","authors":"I. Samuelson","doi":"10.1106/YEYN-66QN-P0XK-1XVF","DOIUrl":"https://doi.org/10.1106/YEYN-66QN-P0XK-1XVF","url":null,"abstract":"","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134288931","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 : 1999-07-01DOI: 10.1177/109719639902300104
S. Roels, W. Depraetere, J. Carmeliet, H. Hens
The aim of this study is to validate different analytical relations used in hygrothermal simulations for the material properties. Therefore, a valida tion experiment on four types of flat roofs has been set up at the laboratory. All rele vant material properties of the individual material layers were determined before hand. During the experiment, temperatures, heat fluxes and moisture contents were measured. The measured data were then compared with numerical simulation results. By repeating the simulations with different expressions for the vapour per meability and for the sorption isotherm, the influence of approximate analytic rela tionships was investigated.
{"title":"Simulating Non-Isothermal Water Vapour Transfer: An Experimental Validation on Multi-Layered Building Components","authors":"S. Roels, W. Depraetere, J. Carmeliet, H. Hens","doi":"10.1177/109719639902300104","DOIUrl":"https://doi.org/10.1177/109719639902300104","url":null,"abstract":"The aim of this study is to validate different analytical relations used in hygrothermal simulations for the material properties. Therefore, a valida tion experiment on four types of flat roofs has been set up at the laboratory. All rele vant material properties of the individual material layers were determined before hand. During the experiment, temperatures, heat fluxes and moisture contents were measured. The measured data were then compared with numerical simulation results. By repeating the simulations with different expressions for the vapour per meability and for the sorption isotherm, the influence of approximate analytic rela tionships was investigated.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115319989","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 : 1999-07-01DOI: 10.1177/109719639902300106
J. Edgar
This paper presents the results of research conducted to exam ine the efficiency of critical details in source drainage EIFS. The research was prompted by a BOCA1 model code change requiring that the interface between dissimilar materials be tested to demonstrate that the details resist water pene tration into wall assemblies. The objective of the research was twofold: (1) to satisfy the BOCA requirements, and (2) to examine the effectiveness of source drainage as a method of water management. The experimental simulations in volved much more severe conditions than the BOCA requirements to assess source drainage. The research evaluated a number of construction details for rain penetration resistance under static pressure differences up to 1 kPa (20.9 psf) and dynamic pressure variations at wind speeds up to 33.5 m/s (121 km/h) (75 mph). The re sults show that traditional techniques based on source drainage, such as window flashing, are effective as a means for managing water at the window/wall junc tions of the EIFS cladding systems. This paper describes the test procedure and focuses on window details.
{"title":"Performance of Source Drainage External Insulation Finish System at the Window/Wall Junction","authors":"J. Edgar","doi":"10.1177/109719639902300106","DOIUrl":"https://doi.org/10.1177/109719639902300106","url":null,"abstract":"This paper presents the results of research conducted to exam ine the efficiency of critical details in source drainage EIFS. The research was prompted by a BOCA1 model code change requiring that the interface between dissimilar materials be tested to demonstrate that the details resist water pene tration into wall assemblies. The objective of the research was twofold: (1) to satisfy the BOCA requirements, and (2) to examine the effectiveness of source drainage as a method of water management. The experimental simulations in volved much more severe conditions than the BOCA requirements to assess source drainage. The research evaluated a number of construction details for rain penetration resistance under static pressure differences up to 1 kPa (20.9 psf) and dynamic pressure variations at wind speeds up to 33.5 m/s (121 km/h) (75 mph). The re sults show that traditional techniques based on source drainage, such as window flashing, are effective as a means for managing water at the window/wall junc tions of the EIFS cladding systems. This paper describes the test procedure and focuses on window details.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128640403","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 : 1999-07-01DOI: 10.1177/109719639902300103
I. Samuelson
At times, the construction industry exhibits little interest in new knowledge. But there is a lot of knowledge to be acquired, produced, e.g., by the Swedish Council for Building Research. The difficulty lies in having this knowl edge utilised, in spreading it in such a way that users can assimilate it. A good client demands that the consultants should have this knowledge.
{"title":"Is There a Shortage of Knowledge in the Industry?","authors":"I. Samuelson","doi":"10.1177/109719639902300103","DOIUrl":"https://doi.org/10.1177/109719639902300103","url":null,"abstract":"At times, the construction industry exhibits little interest in new knowledge. But there is a lot of knowledge to be acquired, produced, e.g., by the Swedish Council for Building Research. The difficulty lies in having this knowl edge utilised, in spreading it in such a way that users can assimilate it. A good client demands that the consultants should have this knowledge.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129167030","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: 10.1177/109719639902200407
E. Kossecka
The effect of the internal thermal structure of building walls and roofs on their frequency responses, of period of 24 h, is examined. The notion of the thermal structure factors of a wall is introduced. Correlation between the fre quency dependent and structure dependent thermal characteristics is analyzed for the representative sets of building walls and roofs from ASHRAE Handbook 1989: Fundamentals. Most evident is the correlation between the decrement factor and the structure dependent time constant, between the admittance response amplitude and the appropriate thermal mass factor, and between the time lag and its estimated value, and also thickness of a wall.
{"title":"Correlations Between Structure Dependent and Dynamic Thermal Characteristics of Building Walls","authors":"E. Kossecka","doi":"10.1177/109719639902200407","DOIUrl":"https://doi.org/10.1177/109719639902200407","url":null,"abstract":"The effect of the internal thermal structure of building walls and roofs on their frequency responses, of period of 24 h, is examined. The notion of the thermal structure factors of a wall is introduced. Correlation between the fre quency dependent and structure dependent thermal characteristics is analyzed for the representative sets of building walls and roofs from ASHRAE Handbook 1989: Fundamentals. Most evident is the correlation between the decrement factor and the structure dependent time constant, between the admittance response amplitude and the appropriate thermal mass factor, and between the time lag and its estimated value, and also thickness of a wall.","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"75 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":"127392668","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: 10.1177/109719639902200410
M. Lawton
~ Vancouver’s &dquo;unique&dquo; climate ~ zoning by-laws ~ use of -face sealed wall systems -polyethylene vapour barriers (with or without sealing) -acryhc coatings on stucco -welded wire mesh instead of expanded metal to reinforce stucco -polyolefin sheathing membranes instead of building paper -oriented strand board (OSB) instead of plywood sheathing -wet wood during construction -poor quality windows
{"title":"Vancouver's Rotting Condominium Problem—How Did We Get into This Mess?","authors":"M. Lawton","doi":"10.1177/109719639902200410","DOIUrl":"https://doi.org/10.1177/109719639902200410","url":null,"abstract":"~ Vancouver’s &dquo;unique&dquo; climate ~ zoning by-laws ~ use of -face sealed wall systems -polyethylene vapour barriers (with or without sealing) -acryhc coatings on stucco -welded wire mesh instead of expanded metal to reinforce stucco -polyolefin sheathing membranes instead of building paper -oriented strand board (OSB) instead of plywood sheathing -wet wood during construction -poor quality windows","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"42 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":"129263606","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: 10.1177/109719639902200403
{"title":"Information from Solplan Review: Best Practice Guide: Wood Frame Envelopes in the Coastal Climate of British Columbia","authors":"","doi":"10.1177/109719639902200403","DOIUrl":"https://doi.org/10.1177/109719639902200403","url":null,"abstract":"","PeriodicalId":435154,"journal":{"name":"Journal of Thermal Envelope and Building Science","volume":"15 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":"124977480","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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