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The more commonly used boards in New England are vertical-grain boards. Depending on the diameter of the log, cuts are made from 4 + 1 ⁄ 2 to 6 + 1 ⁄ 2 inches (110 to 170 mm) deep along the full length of the log. Each time the log turns for the next cut, it is rotated 5 ⁄ 8 inch (16 mm) until it has turned 360°. This gives the radially ...
Highly decorative wood-shingle siding on a house in Clatskanie, Oregon, U.S. Siding or wall cladding is the protective material attached to the exterior side of a wall of a house or other building. Along with the roof, it forms the first line of defense against the elements, most importantly sun, rain/snow, heat and cold, thus creating a stable ...
In LVL, the direction of the wood grain is always parallel to the length of the billet. [6] The stacking of these veneers into a complete board, called a billet, creates a single piece of LVL sharing a common direction of wood grain. [1] LVL is typically rated by the manufacturer for elastic modulus and allowable bending stress.
When testing wood in lumber form, the Janka test is always carried out on wood from the tree trunk (known as the heartwood), and the standard sample (according to ASTM D143) is at 12% moisture content and clear of knots. [3] The hardness of wood varies with the direction of the wood grain. Testing on the surface of a plank, perpendicular to the ...
Oriented strand board (OSB) is a type of engineered wood, formed by adding adhesives and then compressing layers of wood strands (flakes) in specific orientations. It was invented by Armin Elmendorf in California in 1963. [ 1 ]
In 1961, at a meeting in Scottsdale, Arizona, the Committee on Grade Simplification and Standardization agreed to what is now the current U.S. standard: in part, the dressed size of a 1-inch (nominal) board was fixed at 3 ⁄ 4 inch; while the dressed size of 2 inch (nominal) lumber was reduced from 1 + 5 ⁄ 8 inch to the current 1 + 1 ⁄ 2 inch.