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Plywood is a composite material manufactured from thin layers, or "plies", of wood veneer that have been stacked and glued together. It is an engineered wood from the family of manufactured boards, which include plywood, medium-density fibreboard (MDF), oriented strand board (OSB), and particle board (or chipboard).
High Humidity reduces mechanical damage such as brittle paint but raises the risks of biological organisms, e.g. white efflorescence and green-to-black stains on a panel painting. [12] High Humidity also raises the risks of curving or warping of the wood over time, forcing the paint to flake off.
Glulam brace with plates used for connections Glulam frame of a roof structure. Glued laminated timber, commonly referred to as glulam, is a type of structural engineered wood product constituted by layers of dimensional lumber bonded together with durable, moisture-resistant structural adhesives so that all of the grain runs parallel to the longitudinal axis.
Cross-laminated timber (CLT) is a subcategory of engineered wood [1] panel product made from gluing together at least three layers [2] of solid-sawn lumber (i.e. lumber cut from a single log). [3] The grain of each layer of boards is usually rotated 90 degrees from that of adjacent layers and glued on the wide faces of each board, usually in a ...
Once dyed, the sheets are laminated together to form a block. The block is then sliced so that the edges of the laminated veneer become the “grain” of the reconstituted veneer. Wood on Wood Also called 2-ply is a decorative wood veneer face with a utility grade wood backer applied at an opposing direction to the face veneer. [4]
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 ...
Bed-mould or bed moulding: Narrow moulding used at the junction of a wall and ceiling, found under the cornice, of which it is a part. [2] Similar to crown moulding, a bed mould is used to cover the joint between the ceiling and wall. Bed moulds can be either sprung or plain, or flush to the wall as an extension of a cornice mould. [3]
The effect of wood shrinkage is concealed when the joint is beaded or otherwise moulded. [1] In expensive cabinet work, glued dovetail and multiple tongue and groove are used. Each piece has a slot (the groove or dado) cut all along one edge, and a thin, deep ridge (the tongue) on the opposite edge. The tongue projects a little less than the ...