Drying Response of Wood-Frame Construction: Laboratory and Modeling

    Volume 7, Issue 1 (January 2010)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 4 December 2009

    Page Count: 28


    Maref, W.
    National Research Council Canada–Institute for Research in Construction (NRCC-IRC), Ottawa, ON

    Lacasse, M. A.
    National Research Council Canada–Institute for Research in Construction (NRCC-IRC), Ottawa, ON

    (Received 15 August 2008; accepted 22 September 2009)

    Abstract

    Recent research in the assessment of hygrothermal response of building enclosures focuses on both laboratory experimentation and modeling in which the results from both processes are compared. Evidently such type of studies can potentially offer useful information regarding the benchmarking of models and related methods to assess hygrothermal performance of wall assemblies. This paper reports on experimental results and the use of an advanced hygrothermal computer model called hygIRC to assess the hygrothermal response of various components in wood-frame wall assemblies when subjected to nominally steady-state environmental conditions. There was interest in obtaining information on the drying rates of wall components, in particular, oriented strand board (OSB), featuring several different types of membrane in contact with OSB given that such results could provide direct evidence of the degree to which membranes may retain moisture and affect moisture migration. On this basis, the drying responses of mid-scale specimens of approximately (0.8×1 m2) and full-scale specimens (2.44×2.44 m2) were assessed in a series of experiments undertaken in a controlled laboratory setting. The results were subsequently used to help benchmark simulation results obtained from hygIRC in which a comparison is made between experimental and simulation results.


    Paper ID: JAI102067

    DOI: 10.1520/JAI102067

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    Author
    Title Drying Response of Wood-Frame Construction: Laboratory and Modeling
    Symposium Second Symposium on Heat-Air-Moisture Transport: Measurements and Implications in Buildings, 2009-04-20
    Committee C16