Shrinkage of White Oak as Affected by Position in the Tree
Abstract:This study, together with those previously made on overcup oak, indicate that the shrinkage of the wood increases with its age in the tree; that is, the wood near the center and base of the tree shrinks more in the older trees than in the younger ones. Why that is the case has not been determined, but the indications are that the tendency to collapse, which here is included as shrinkage, increases as the wood grows older, possibly on account of the infiltration of additional material with time in the fine interstices of the pit membranes thereby making them still smaller and more resistant to the withdrawal or rupture of water films in them.
Document Type: Journal Article
Affiliations: U. S. Forest Products Laboratory, Maintained at Madison, Wis., in cooperation with the University of Wisconsin
Publication date: July 1, 1939
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