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| Forest materials and products used in construction, divided into the following types:round timber (logs), sawn timber, harvesting, product planed moldings, flooringmaterials, plate joiners, roofing materials, plywood, drann plastering, joinery. In the construction used logs from softwood (pine, fir, larch, fir, cedar) and deciduous(beech, birch, aspen, alder, poplar, linden, oak, etc.). The thickness of the timber construction of softwood and hardwood in the top endshould be not less than 14 cm, length - 4 - 6,5 m. Lumber is divided into the following types: board thickness of 100 mm or less at a ratio of width to thickness of more than 2 bars of 100 mm or less at a ratio of width tothickness of 2 or less; boards thickness and width of 100 mm. Blanks are called timber, the relevant dimensions of wood products, with allowances forshrinkage and treatment provided by current standards. |