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Aircraft Spruce Co. was founded in 1965 by Bob and Flo Irwin as a follow-on to founding Fullerton Air Parts. [1] Initially the company sold only one product: aircraft grade spruce lumber for aircraft construction and restoration. Aircraft Spruce Co. added more products and adopted the name Aircraft Spruce & Specialty Co.
This method eliminates the need for mitre joints, face nailing, and the use of joints on 16-inch (410 mm) or 24-inch (610 mm) centres of conventional framing. For many uses, tongue and groove boards have been rendered obsolete by the introduction of plywood and later composite wood boards, but the method is still used in higher-quality boards.
Interfor produces lumber for residential, commercial and industrial applications. [5] It uses several species of wood in its products, including Douglas Fir, Western Hemlock, Western Red Cedar, Ponderosa pine, Lodgepole pine and Southern Yellow Pine. It markets European Spruce and Red Pine lumber through a sales agreement with Ilim Timber. [6]
The moisture content check is conducted because the lumber that is typically used, can arrive with a MC of 19% or less, but lumber for CLT needs to have a MC of approximately 12% during manufacturing to avoid internal stress due to shrinkage. This test is also done so that adjacent pieces of lumber do not have an MC difference greater than 5%.
Glulam brace with plates used for connections Glulam frame of a roof structure. Glued laminated timber, commonly referred to as glulam, is a type of structural engineered wood product constituted by layers of dimensional lumber bonded together with durable, moisture-resistant structural adhesives so that all of the grain runs parallel to the longitudinal axis.
Likewise wooden shingles are manufactured in differing lengths, in North America, 16, 18 and 24 inches (410, 460 and 610 mm). In Latvia, wooden shakes were defined in a 1933 national standard as 70 centimetres (28 in) long, 7.5 centimetres (3.0 in) wide and 8.5 millimetres (0.33 in) thick. They are a product of planing or running a knife along ...