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As previously noted, less wood is needed to produce a given finished size than when standards called for the green lumber to be the full nominal dimension. However, even the dimensions for finished lumber of a given nominal size have changed over time. In 1910, a typical finished 1-inch (25 mm) board was 13 ⁄ 16 in (21 mm). In 1928, that was ...
In the United States, planks can be any length and are generally a minimum of 2×8 (1 + 1 ⁄ 2 in × 7 + 1 ⁄ 4 in or 38 mm × 184 mm), but planks that are 2×10 (1 + 1 ⁄ 2 in × 9 + 1 ⁄ 4 in or 38 mm × 235 mm) and 2×12 (1 + 1 ⁄ 2 in × 11 + 1 ⁄ 4 in or 38 mm × 286 mm) are more commonly stocked by lumber retailers.
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 ...
The sizes of the most commonly used plywood sheets are 4 by 8 feet (1,220 mm × 2,440 mm) [20] 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 plywood is 1200 × 2400 mm. 5 × 5 feet (1,500 × 1,500 mm) is also a common ...
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 ...
CLT-plate with three layers made from spruce. 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] Each layer of boards is usually oriented perpendicular to adjacent layers and glued on the wide faces ...