Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Moisture Accumulation in Walls Due to Air Leakage
A number of cases of water and frost damage in masonry and non-loadbearing walls have been examined. Consideration of the weather conditions and the location and pattern of failure has shown that the quantities of water involved could not have resulted from vapour diffusion or rain penetration, and that condensation due to exfiltration of air was the primary source of moisture. Air exfiltrates through the many cracks and joints common to all present methods of construction. In winter, the water vapour contained by the air is cooled below its dewpoint temperature at some point in the wall and condensation occurs. The pattern and magnitude of building pressure differences inducing exfiltration and the concomitant air and moisture transfer are discussed in this paper. Some examples of related building failures are then described. (Author)
Moisture Accumulation in Walls Due to Air Leakage
A number of cases of water and frost damage in masonry and non-loadbearing walls have been examined. Consideration of the weather conditions and the location and pattern of failure has shown that the quantities of water involved could not have resulted from vapour diffusion or rain penetration, and that condensation due to exfiltration of air was the primary source of moisture. Air exfiltrates through the many cracks and joints common to all present methods of construction. In winter, the water vapour contained by the air is cooled below its dewpoint temperature at some point in the wall and condensation occurs. The pattern and magnitude of building pressure differences inducing exfiltration and the concomitant air and moisture transfer are discussed in this paper. Some examples of related building failures are then described. (Author)
Moisture Accumulation in Walls Due to Air Leakage
A. G. Wilson (Autor:in) / G. K. Garden (Autor:in)
1966
12 pages
Report
Keine Angabe
Englisch
Civil Engineering , Construction , Walls , Moisture , Buildings , Housing , Water vapor , Cracks , Cooling , Condensation , Pressure , Symposia , Wind , Ventilation , Air , Leakage(Fluid) , Design , Canada , Damage , Chimney action , Pressure differences
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