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STRUCTURAL LUMBERThe effect of moisture content on the compression parallel to grain strength of Douglas-fir dimension lumber was evaluated using full-size on-grade members. Compression parallel to grain strength properties increased with drying throughout the entire property range. The influence of ...
• Context Mechanical wood properties are increasingly relevant for structural applications and are influenced by growing space availability. Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) has an increasing market share in Europe and is mainly processed to sawn timber. • Aim A sample of 164...
CO2 and N2 sorption isotherms were used to explore nanopores in dried cell walls of Douglas-fir, aspen and western red cedar heartwood specimens. The total cell wall pore volume was estimated as sum of detected micropore volume from the CO2 isotherm and the volume of pores that are less than...
Effects of various fire-retardants on plate shear and five-point flexural shear properties of plywood The influence of four fire-retardant systems on the planar (rolling) shear properties of structural hardwood plywood is evaluated using two possible ASTM D... N Ayrilmis,JE Winandy - 《Forest ...
Growth response of young, thinned Douglas-fir stands to nitrogen fertilizer in relation to soil properties and tree nutrition Application of 224 kg N/ha to young, thinned stands of Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) at 35 sites in western Oregon and Washington signi... P Hopman...
LVL can be made of very different wood species, such as beech, birch, poplar, spruce, Douglas fir, etc.. The effects of ply organization on the mechanical properties of LVL elements have been studied, demonstrating that poplar and beech LVL beams offer higher bending strength and modulus of ...
Douglas fir is one of the widespread and abundant species in western North America. It is a soft wood and belongs to the coniferous family. The Douglas fir is an important commercial wood; it can be used for structural timbers, lumber, and furniture, which generate large amounts of sawdust...
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5. Metal response of Douglas-fir: a comparison of foliar metals and phytochelatin production in trees planted in soils amended with biosolids or metal salts. [D] . Mendrey, Katrina J. 2013 机译:道格拉斯冷杉的金属响应:比较土壤中种植的生物固体或金属盐中的树木中叶片金属和植物螯合素产量的比较...