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2. Lumber - Wikipedia

   en.wikipedia.org/wiki/Lumber

   A common 50 by 100 mm (2-by-4-inch) board. Dimensional lumber is lumber that is cut to standardized width and depth, often specified in millimetres or inches (but see below for information on nominal dimensions vs. actual dimensions). Carpenters extensively use dimensional lumber in framing wooden buildings.

3. Board foot - Wikipedia

   en.wikipedia.org/wiki/Board_foot

   An example of planed lumber is softwood "two by four" lumber sold by large lumber retailers, nominally 2 by 4 inches (50 mm × 100 mm). The 2 × 4 is actually only 1 + 1 ⁄ 2 in × 3 + 1 ⁄ 2 in (38 mm × 89 mm), but the dimensions for the lumber when purchased wholesale could still be represented as full 2 × 4 lumber, although the "standard ...

4. Parallel-strand lumber - Wikipedia

   en.wikipedia.org/wiki/Parallel-strand_lumber

   A PSL block. 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 inch (6.4 mm) and an average length of at least 300 ...

5. Plank (wood) - Wikipedia

   en.wikipedia.org/wiki/Plank_(wood)

   The wood is categorized as a board if its width is less than 2 + 1 ⁄ 2 in (64 mm), and its thickness is less than 1 + 1 ⁄ 2 in (38 mm). A plank used in a building as a horizontal supporting member that runs between foundations, walls, or beams to support a ceiling or floor is called a joist.

6. Oriented strand board - Wikipedia

   en.wikipedia.org/wiki/Oriented_strand_board

   Oriented strand board. OSB is easily identifiable by its characteristic wood strands. Oriented strand board ( OSB) is a type of engineered wood similar to particle board, formed by adding adhesives and then compressing layers of wood strands (flakes) in specific orientations. It was invented by Armin Elmendorf in California in 1963. [1]

7. Plywood - Wikipedia

   en.wikipedia.org/wiki/Plywood

   The most commonly used thickness range is from 1 ⁄ 8 to 3 inches (3.2–76.2 mm). The sizes of the most commonly used plywood sheets are 4 by 8 feet (1,220 mm × 2,440 mm) which was first used by the Portland Manufacturing Company, who developed modern veneer core plywood for the 1905 Portland World Fair. A common metric size for a sheet of ...