Sorption Isotherms of Twelve Woods At Subfreezing Temperatures

This paper deals with the study of the equilibrium moisture characteristics of wood below freezing. The study included experiments covering the relative humidity range from nearly zero percent to the highest value attainable. The test also included values over a smaller range corresponding more closely to that to which woods are subjected in building structures. Sorption data were obtained for 12 types of wood at 3, 10, and 70?F. Results showed that wood used as the exterior surface of a house or lumber stored outdoors will tend to have a moisture content below that of saturation during the winter season.

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