![]() ![]() Represents good value for appearance end uses. Contains no holes or other characteristics. This material has highly restricted wane allowances to give well defined corners. Grading Rule Paragraph NLGA 203 b,c,d WCLIB 150 b,c,d WWPA 10.11, 10.12, 10.13 Appearance KnottyĪ non structural product manufactured to meet the appearance requirements of quality projects. Some pieces of D Clear may require trimming to yield clear lengths for the intended use. In most cases, this grade is sold with a specified allowance of D grade.ĭ Clear grade permits larger and more numerous natural characteristics which are widely accepted in the construction of outdoor structures. Suitable for high quality landscape structures and as exposed posts and beams in heavy timber construction. ![]() The C and Better Clear grade offers good appearance in high quality, well manufactured lumber. This grade consists of D Clear, C Clear, and B Clear. Grading Rule Paragraph PLIB – Export R List 401 D and Better Clear ![]() Its natural characteristics do not detract from the woods fine appearance. The lumber is sound and well manufactured. This grade should be specified when the finest quality rough lumber is desired. Larger sizes are produced on special orders. (152 mm x 152 mm) are generally available. Sizes from 2 x 4 (51 mm x 102 mm) up to 6 x 6 in. Surfaced Four Sides (S4S) The smooth surface on all four sides presents a uniformly sized product with a high quality appearance. The rough texture is clearly visible on all four sides. Rougher Headed The lumber receives its texture from a milling process which uses roughened planer knives. Saw Textured The saw textured surface, obtained during the milling process which uses either circular or band saws, is present on all four sides. When required, seasoning is achieved by air-drying except for grades of Light Framing and Structural Joists and Planks which are available kiln-dried. Knotty cedar presents a more rustic appearance and is typically supplied green (unseasoned) in the appearance and structural grades. When required, seasoning is achieved by air-drying. Clear grades of timbers are normally supplied green (unseasoned). Clear cedar has a limited number of natural characteristics and is specified when appearance of the highest quality is desired. So, i n 1964, the American Lumber Congress addressed the lumber dimension issues by setting industry requirements for “s ize standards, maximum moisture content, and nomenclature. The lack of consisten t siz ing became an issue in the early part of the 20 th c entury for stick – frame construction. Why isn’t a 2×4 actually a 2×4?Ī 2×4 hasn’t measured two inches by four inches for several decades. The finished size is the “actual lumber size” (sometimes referred to as the “dressed lumber size ”). This finishing process gives lumber a uniform profile, so there’s consistency when you go to the lumberyard. The nominal size is determined before the lumber is surfaced, milled, or planed smooth. Nearly every single time this question comes up, it comes down to “nominal” dimensions of the purchased lumber. Lumber size can be confusing, especially when someone is first getting started with DIY woodworking. Every so often a homeowner tackling a new project will reach out to ask why their lumber doesn’t fit the connector. ![]()
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