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Coast Douglas-fir seed cone, from a tree grown from seed collected by David Douglas Pseudotsuga menziesii var. menziesii has attained heights of 393 feet (120* m). That was the estimated height of the tallest conifer ever well-documented, the Mineral Tree ( Mineral, Washington ), measured in 1924 by Dr. Richard E. McArdle, [ 7 ] former chief of ...
Douglas-fir is a medium-sized to extremely large evergreen tree, 20–100 metres (70–330 feet) tall (although only coast Douglas-firs, reach heights near 100 m) [10] and commonly reach 2.4 m (8 ft) in diameter, [11] although trees with diameters of almost 5 m (16 ft) exist. [12]
Rift-sawing may also be described as lumber produced during latter stages of stepped cuts on a quarter round, where the subsequent cuts are parallel to either of the initial quartering cuts. The AWI defines "rift sawing" as a technique of cutting boards from logs so the grain is between 30–60° to the face of the board, with 45 degrees being ...
Softwood plywood is usually made either of cedar, Douglas fir or spruce, pine, and fir (collectively known as spruce-pine-fir or SPF) or redwood and is typically used for construction and industrial purposes. [12] The most common dimension is 1.2 by 2.4 metres (3 ft 11 in × 7 ft 10 in) or the slightly larger imperial dimension of 4 feet × 8 feet.
When boards are cut from a log, they are usually rip cut along the length (axis) of the log. This can be done in three ways: plain-sawing (most common, also known as flat-sawn, bastard-sawn, through and through, and tangent-sawn), quarter-sawing (less common), or rift sawing (rare).
Coast Douglas-fir is the second-tallest conifer in the world (after coast redwood), and the third-tallest of all trees, (after Eucalyptus regnans).Currently, coast Douglas-fir trees 60–75 metres (197–246 ft) or more in height and 1.5–2 metres (4.9–6.6 ft) in diameter are common in old growth stands, [4] and maximum heights of 100–120 metres (330–390 ft) and diameters up to 4.5–5. ...
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Brandstrom, Axel J. Analysis of logging costs and operating methods in the Douglas fir region (1933) online; Burley, Jeffery, et al. eds. Encyclopedia of forest sciences (4 vol. Elsevier Academic Press, 2004); comprehensive global coverage in 2100 pages. Cox, Thomas R., et al.
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1680 Stringtown Road, Grove City, OH · Directions · (614) 539-4554