The book Forest Products Laboratory, Madison, Wisconsin was written by author United States. Forest Service. [from Old Catalog] Here you can read free online of Forest Products Laboratory, Madison, Wisconsin book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Forest Products Laboratory, Madison, Wisconsin a good or bad book?
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It is often necessary for financial reasons to reduce Kiln Dry- the time required properly to season wood by open-air '"S- drying. Moreover, for many purposes it is desirable to dry the wood more thoroughly than is possible in the open air and to employ conditions which will reduce its hygroscopicity, or tendency to shrink and swell. For these reasons dry kilns are almost univer- sally employed for high-grade lumber, and frequently even for the poorer grades. In the drying of hardwoods it is es...timated that about 10 per cent of the material dried is either ruined or lowered in grade. Much of this loss could be avoided by proper methods and kilns, 70313°— 22 3 17 18 Forest Prodiicls lAihoratonj. and the present results might be greatly i.nproved in other respects. Establishing The Forest Products Laboratory bases all its kiln- r, ■ ■ , drying practice on fundamental studies to determine 1 rinciples. -^ => ' the principles underlying the transfusion of moisture through wood, the effect of changes in atmospheric conditions upon the rate of transfusion, the effect of various methods of drying and of various drying treat- ments upon the properties of the wood being dried, and similar studies.
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