Structural Lumber: An Overview of Research Needsby William L. Galligan, Frank Lumber Co, Mill City, OR, USA,
David W. Green, Frank Lumber Co, Mill City, OR, USA,
Abstract: Structural performance of lumber is influenced by the processing steps from forest to final end-use and by the end-use environment. Research needs in processing include: 1) selection of quality wood from forestry through sawmilling and grading; 2) maintenance of quality wood through control of processes such as drying and treating that can deteriorate wood through chemical and physical degradation; and 3) development of performance models that can be applied in design property assignment to reflect the influence of processing variables. Research also is needed on predictive models for the influence of the end-use environment on structural performance. These models should reflect the interaction of many of these variables, such as moisture and temperature, will need to reflect probabilistic inferences, and they should be guided by end-use related sensitivity studies.
Subject Headings: Wood preservatives | Quality control | Chemical degradation | Chemical treatment | Deterioration | Chemical properties
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