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For hardwood flooring, the test usually requires an 80 mm × 150 mm (3 in × 6 in) sample with a thickness of at least 6–8 mm, and the most commonly used test is the ASTM D1037. 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 ...
Plywood for indoor use generally uses the less expensive urea-formaldehyde glue, which has limited water resistance, while outdoor and marine-grade plywood are designed to withstand moisture, and use a water-resistant resorcinol-formaldehyde or phenol-formaldehyde glue to prevent delamination and to retain strength in high humidity. [17]
Moisture Content-- BS 1088 plywood must have a moisture content between 6% and 14% when it leaves the factory. Finishing -- Boards will be sanded on both sides equally. Length & Width -- The length or width of a board produced as a standard size shall not be less than the specified size nor more than 6.3 mm (0.25") greater than the specified size.
Finished lumber is supplied in standard sizes, mostly for the construction industry – primarily softwood, from coniferous species, including pine, fir and spruce (collectively spruce-pine-fir), cedar, and hemlock, but also some hardwood, for high-grade flooring. It is more commonly made from softwood than hardwoods, and 80% of lumber comes ...
Global Wood Density Database; National Hardwood and Lumber Association; American Hardwood Information Center; American Hardwood Export Council; Australian National Association of Forest Industries
The National Hardwood Lumber Association (NHLA) was founded on April 8, 1898 in Chicago, Illinois to establish uniformity of inspecting hardwood lumber.The NHLA is now a membership-based trade association that serves two main purposes: to stimulate economic activity and to provide a vehicle for the members to collectively strive for mutual benefit.
Anigre is an African hardwood commonly used for plywood, interior furniture, cabinetry, and high-end millwork applications. It is frequently sliced and sold as veneer, although it is available in board form as well. In board form it is used for boat building, general carpentry, and other light construction uses.
Hardwood flooring. Solid hardwood floors are made of planks milled from a single piece of timber. Solid hardwood floors were originally used for structural purposes, being installed perpendicular to the wooden support beams of a building known as joists or bearers.