What-is-Wood-Grain

What is Wood Grain – Part 2

In our first Blog, “What is Wood Grain’’, (May 12, 2016), we learned that one way the term “wood grain” can be used is to describe the density of the wood as it relates to structural properties of dimension lumber.  We learned that the closer together the annual rings are, and the higher the percentage of summerwood, the greater the density and the greater the strength of the wood. Higher wood density is a grading rule requirement for certain higher grades of Southern Yellow Pine Dimension Lumber, whereas low-density pieces may have to be segregated into lower grades of dimension lumber.

Now let’s look at some other ways that the words “wood grain” are used to describe several other characteristics of wood.

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What-is-Wood-Grain

What is Wood Grain

Wood grain is the longitudinal arrangement of wood fibers [1] or the pattern resulting from this.[2] R. Bruce Hoadley wrote that grain is a “…confusingly versatile term…” including the direction of the wood cells (straight grain, spiral grain), surface appearance or figure, growth-ring placement (vertical grain), plane of the cut (end grain, quarter sawn, flat sawn, etc.), rate of growth (narrow grain), relative cell size (open grain), and other meanings.[3]

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