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Picea sitchensis, the Sitka spruce, is a large, coniferous, evergreen tree growing to just over 100 meters (330 ft) tall, [2] with a trunk diameter at breast height that can exceed 5 m (16 ft).
The Spruce Production Division was a unit of the United States Army established in 1917 to produce high-quality Sitka spruce timber and other wood products needed to make aircraft for the United States' efforts in World War I. The division was part of the Army Signal Corps's Aviation Section.
Aging toner is applied to the Sitka Spruce tops before application of the nitrocellulose lacquer finish. The modern D-28 standard series is made of several high quality tone woods, including solid Sitka Spruce tops, Indian rosewood back and sides, mahogany neck, ebony fret board, ebony bridge, and maple bridge plate.
Spruce is the standard material used in soundboards for many musical instruments, including guitars, mandolins, cellos, violins, and the soundboard at the heart of a piano and the harp. Wood used for this purpose is referred to as tonewood. Spruce, along with cedar, is often used for the soundboard/top of an acoustic guitar. The main types of ...
The loudest wood tops, such as Sitka Spruce, are lightweight and stiff, while maintaining the necessary strength. Denser woods, for example Hard Maple, often used for necks, are stronger but not as loud (R = 6 vs. 12). When wood is used as the top of an acoustic instrument, it can be described using plate theory and plate vibrations.
The most commonly used woods are Sitka spruce and Douglas fir, which offer excellent strength-to-weight ratios. Wooden structural members are joined with adhesive, usually epoxy. Unlike the wood construction techniques used in other applications, virtually all wooden joints in aircraft are simple butt joints, with plywood gussets. Joints are ...
The long-term contract that the Alaska Pulp Corporation agreed to committed 5.25 billion board feet. The primary sale area included Baranof Island and portions of the Chichagof Island. [6] The process of manufacturing at the Sitka Pulp Mill consisted of utilizing about 70 percent of Western Hemlock and 30 percent Sitka Spruce. The mill was able ...
Sitka spruce (Picea sitchensis) 337 11,900 Queets Spruce: Olympic National Park: United States [76]: 58 Eucalyptus obliqua: 337 11,900 Gothmog Styx Valley: Australia The 337m³ figure includes 296m³ for trunks and 41m³ for branches. [50] Eucalyptus delegatensis: 286 10,100 Styx Valley: Australia This tree was destroyed in the 2019 bushfires. [50]
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