Technical Report
 

Shrinkage of Douglas fir, western hemlock, and red alder as affected by drying conditions

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  • Moisture content and shrinkage were determined on specimens equilibrated at two conditions for equilibrium moisture content (EMC) at room temperature after the specimens had been dried under a variety of constant temperatures with constant EMC's. Moisture content at room temperature equilibrium was less for specimens dried at high temperature than for those dried at low temperature, and the effect was about the same on the three species. Shrinkage was greater on specimens dried at high temperature, more than can be accounted for by lower moisture content. Douglas-fir was least and red alder most affected, sometimes doubled. Effect of temperature on both moisture content and shrinkage was more pronounced above 150 F.
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file details shr_dou_fir_wes_hem_.pdf 2017-07-03 Public Download
file details shr_dou_fir_wes_hem_.pdf 2017-07-03 Public Download
file details shr_dou_fir_wes_hem_.pdf 2017-07-03 Public Download