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2. Spruce-pine-fir - Wikipedia

   en.wikipedia.org/wiki/Spruce-pine-fir

   Alpine fir (Abies lasiocarpa) Random-length lumber futures and options are traded on the Chicago Mercantile Exchange, and western SPF is the type of lumber specified in the trading specs. [3] The term random length is used because even though all the boards are 2x4s, the lengths can be between 2.4 and 6.1 metres (8 and 20 ft).

3. History of the lumber industry in the United States - Wikipedia

   en.wikipedia.org/wiki/History_of_the_lumber...

   Lumber prices. Presently there is a healthy lumber economy in the United States, directly employing about 500,000 people in three industries: Logging, Sawmill, and Panel. [62] Annual production in the U.S. is more than 30 billion board feet making the U.S. the largest producer and consumer of lumber. [62]

4. Lumber - Wikipedia

   en.wikipedia.org/wiki/Lumber

   Finished lumber is supplied in standard sizes, mostly for the construction industry – primarily softwood, from coniferous species, including pine, fir and spruce (collectively spruce-pine-fir), cedar, and hemlock, but also some hardwood, for high-grade flooring. It is more commonly made from softwood than hardwoods, and 80% of lumber comes ...

5. Douglas fir - Wikipedia

   en.wikipedia.org/wiki/Douglas_fir

   Douglas-fir is one of the world's best timber-producing species and yields more timber than any other species in North America, making the forestlands of western Oregon, Washington, and British Columbia the most productive on the continent. In 2011, Douglas-fir represented 34.2% of US lumber exports, to a total of 1.053 billion board-feet.

6. Pseudotsuga menziesii var. menziesii - Wikipedia

   en.wikipedia.org/wiki/Pseudotsuga_menziesii_var...

   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. ...

7. Parallel-strand lumber - Wikipedia

   en.wikipedia.org/wiki/Parallel-strand_lumber

   [citation needed] PSL can be made from any wood species, but Douglas fir, southern pine, western hemlock, and yellow poplar are commonly chosen [9] because of their superior strength. The product is manufactured as a 12-by-12-inch (300 mm × 300 mm) or 12-by-18-inch (300 mm × 460 mm) billet in a rectangular cross-section, which is then ...

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9. Pseudotsuga - Wikipedia

   en.wikipedia.org/wiki/Pseudotsuga

   Pseudotsuga / ˌ sj uː d oʊ ˈ t s uː ɡ ə / [1] is a genus of evergreen coniferous trees in the family Pinaceae (subfamily Laricoideae).Common names for species in the genus include Douglas fir, Douglas-fir, Douglas tree, Oregon pine and Bigcone spruce.