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Parallel Strand Lumber
Parallel-strand lumber (PSL) is a form of engineered wood made from parallel wood strands bonded together with adhesive. It is used for beams, headers, columns, and posts, among other uses. The strands in PSL are clipped veneer elements having a least dimension of not more than and an average length of at least 300 times this least dimension (around ). It is a member of the structural composite lumber (SCL) family of engineered wood products. The design strength of PSL is greater than that of sawn lumber as the strands are glued together directionally and under high pressure. This results in a much denser and stronger material. Because knots and other imperfections are randomly dispersed throughout the product (and filled up and fortified with glue) strength variability from one piece of PSL to another is less than in solid-sawn wooden beams. Since wooden construction materials are commonly graded to the lowest 5th percentile of the material's strength curve, PSL has much high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Parallam Parallel Strand Lumber
Parallel-strand lumber (PSL) is a form of engineered wood made from parallel wood strands bonded together with adhesive. It is used for beams, headers, columns, and posts, among other uses. The strands in PSL are clipped veneer elements having a least dimension of not more than and an average length of at least 300 times this least dimension (around ). It is a member of the structural composite lumber (SCL) family of engineered wood products. The design strength of PSL is greater than that of sawn lumber as the strands are glued together directionally and under high pressure. This results in a much denser and stronger material. Because knots and other imperfections are randomly dispersed throughout the product (and filled up and fortified with glue) strength variability from one piece of PSL to another is less than in solid-sawn wooden beams. Since wooden construction materials are commonly graded to the lowest 5th percentile of the material's strength curve, PSL has much higher ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Engineered Wood
Engineered wood, also called mass timber, composite wood, man-made wood, or manufactured board, includes a range of derivative wood products which are manufactured by binding or fixing the strands, particles, fibres, veneers, or boards of wood, together with adhesives, or other methods of fixation to form composite material. The panels vary in size but can range upwards of and in the case of cross-laminated timber (CLT) can be of any thickness from a few inches to or more. These products are engineered to precise design specifications, which are tested to meet national or international standards and provide uniformity and predictability in their structural performance. Engineered wood products are used in a variety of applications, from home construction to commercial buildings to industrial products. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Adhesive
Adhesive, also known as glue, cement, mucilage, or paste, is any non-metallic substance applied to one or both surfaces of two separate items that binds them together and resists their separation. The use of adhesives offers certain advantages over other binding techniques such as sewing, mechanical fastenings, and welding. These include the ability to bind different materials together, the more efficient distribution of stress across a joint, the cost-effectiveness of an easily mechanized process, and greater flexibility in design. Disadvantages of adhesive use include decreased stability at high temperatures, relative weakness in bonding large objects with a small bonding surface area, and greater difficulty in separating objects during testing. Adhesives are typically organized by the method of adhesion followed by ''reactive'' or ''non-reactive'', a term which refers to whether the adhesive chemically reacts in order to harden. Alternatively, they can be organized either ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
International Building Code
The International Code Council (ICC), also known as the Code Council, is an American nonprofit standards organization sponsored by the building trades, which was founded in 1994 through the merger of three regional model code organizations in the American construction industry. Since 2023, ICC's headquarters has been based at Capitol Crossing in Washington, D.C. The organization creates the International Building Code (IBC) and International Residential Code (IRC), two model building codes, which have been adopted for use as a base code standard by most jurisdictions in the United States. The ICC's model codes have been criticized for inflating housing costs and reducing housing supply in the United States through arbitrary and stringent standards that do little for safety and are out of sync with best practices in other countries. The IBC has contributed to the spread of 5-over-1 type of buildings across the US and contributed to a lack of medium-density housing (so-called ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Australian Financial Review
The ''Australian Financial Review'' (''AFR'') is an Australian compact daily newspaper with a focus on business, politics and economic affairs. The newspaper is based in Sydney, New South Wales, and has been published continuously since its founding in 1951. It is currently owned by Nine Entertainment. The ''AFR'' is published in tabloid format six times a week, and provides 24/7 coverage through its website and mobile app. In November 2019, the ''AFR'' reached 2.647 million Australians through both print and digital mediums according to Mumbrella.SMH, AFR and The Age all report audience growth in November Mumbrella 2020 The ''Australian Financial Review'' started as a print-only |
ECOS (CSIRO Magazine)
''ECOS'' is an Australian environmental magazine which presents articles on sustainability research and issues from across Australia and the Asia Pacific region, published monthly online by CSIRO The Commonwealth Scientific and Industrial Research Organisation (CSIRO) is an Australian Government agency that is responsible for scientific research and its commercial and industrial applications. CSIRO works with leading organisations arou ....A new era for ECOS magazine Csiro Alumni 5 May 2011. Retrieved 3 December 2015 History and profile ''ECOS'' was founded in 1974. The magazine won the Banksia Award for Communication in 2000. ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Popular Science
Popular science (also called pop-science or popsci) is an interpretation of science intended for a general audience. While science journalism focuses on recent scientific developments, popular science is more broad ranging. It may be written by professional science journalists or by scientists themselves. It is presented in many forms, including books, film and television documentaries, magazine articles, and web pages. History Before the modern specialization and professionalization of science, there was often little distinction between "science" and "popular science", and works intended to share scientific knowledge with a general reader existed as far back as Greek and Roman antiquity. Without these popular works, much of the scientific knowledge of the era might have been lost. For example, none of the original works of the Greek astronomer Eudoxus (4th century BC) have survived, but his contributions were largely preserved due to the didactic poem '' Phenomena'' writte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
MacMillan Bloedel
MacMillan Bloedel Limited was a Canadian forestry company headquartered in Vancouver, British Columbia. The company was formed in 1951 as MacMillan and Bloedel through the merger of Bloedel, Stewart and Welch with the H. R. MacMillan Export Company. MacMillan and Bloedel then merged in 1959 with the Powell River Company to form MacMillan, Bloedel and Powell River, before adopting its final name in 1966. It was acquired by Weyerhaeuser in 1999. Predecessor companies Powell River Company In 1908 two American entrepreneurs, Dr. Dwight Brooks and Michael Scanlon, created a newsprint mill at Powell River, northwest of Vancouver. The Powell River Company turned out the first roll of newsprint manufactured in British Columbia in 1912. It soon became one of the world's largest newsprint plants and today is credited with introducing the first self-dumping log barge to British Columbia. Bloedel, Stewart and Welch In 1911 Julius Bloedel, a Seattle lawyer, along with his two partn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Weyerhaeuser
The Weyerhaeuser Company ( ) is an American timberland company which owns nearly of timberlands in the U.S., and manages an additional of timberlands under long-term licenses in Canada. The company has manufactured wood products for over a century. It operates as a real estate investment trust (REIT). History In 1900, after years of successful Mississippi River-based lumber and mill operations with Frederick Denkmann and others, Frederick Weyerhäuser moved west to fresh timber areas and founded the Weyerhäuser Timber Company. Fifteen partners and of Washington timberland were involved in the founding, and the land was purchased from James J. Hill of the Great Northern Railway. In 1929, the company built what was then the world's largest sawmill in Longview, Washington. Weyerhaeuser's pulp mill in Longview, which began production in 1931, sustained the company financially during the Great Depression. In 1959, the company eliminated the word "Timber" from its name to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Douglas Fir
The Douglas fir (''Pseudotsuga menziesii'') is an evergreen conifer species in the pine family, Pinaceae. It is the tallest tree in the Pinaceae family. It is native to western North America and is also known as Douglas-fir, Douglas spruce, Oregon pine, and Columbian pine. There are three varieties: coast Douglas-fir (''P. menziesii'' var. ''menziesii''), Rocky Mountain Douglas-fir (''P. menziesii'' var. ''glauca'') and Mexican Douglas-fir (''P. menziesii'' var. ''lindleyana''). Despite its common names, it is not a true fir (genus '' Abies''), spruce (genus '' Picea''), or pine (genus ''Pinus''). It is also not a hemlock; the genus name ''Pseudotsuga'' means "false hemlock". Description Douglas-firs are medium-sized to extremely large evergreen trees, tall (although only coast Douglas-firs reach heights near 100 m) and commonly reach in diameter, although trees with diameters of almost exist. The largest coast Douglas-firs regularly live over 500 years, with the ol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Western Hemlock
''Tsuga heterophylla'', the western hemlock or western hemlock-spruce, is a species of hemlock native to the northwest coast of North America, with its northwestern limit on the Kenai Peninsula, Alaska, and its southeastern limit in northern Sonoma County, California.Farjon, A. (1990). ''Pinaceae. Drawings and Descriptions of the Genera''. Koeltz Scientific Books .Gymnosperm Database''Tsuga heterophylla'' The Latin species name means 'variable leaves'. Description Western hemlock is a large evergreen conifer growing to tall, exceptionally ,Tallest Hemlock, M. D. Vaden, Arborist''Tallest known Hemlock, Tsuga heterophylla''/ref> and with a trunk diameter of up to . It is the largest species of hemlock, with the next largest ( mountain hemlock) reaching a maximum height of . The bark is brown, thin, and furrowed (outwardly appearing similar to that of Douglas-fir). The crown is a very neat broad conic shape in young trees with a strongly drooping lead shoot, and becomes cylindr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Yellow Poplar
''Liriodendron tulipifera''—known as the tulip tree, American tulip tree, tulipwood, tuliptree, tulip poplar, whitewood, fiddletree, lynn-tree, hickory-poplar, and yellow-poplar—is the North American representative of the two-species genus ''Liriodendron'' (the other member is ''Liriodendron chinense''). It is native to eastern North America from Southern Ontario and possibly southern Quebec to west to Illinois, and east to southwestern Massachusetts, then south to central Florida and Louisiana. The tulip tree is the tallest tree of the temperate deciduous forest. It can grow to more than in virgin cove forests of the Appalachian Mountains, often with no limbs until it reaches in height, making it a very valuable timber tree. This species is also fast-growing, without the common problems of weak wood strength and short lifespan often seen in fast-growing species. In 2024 the unusual combination of fast-growing with strong wood was explained. No longer called a hardwood, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
