The machining process to produce dimensional lumber puts a large amount of stress on wood. Lumber can be referred to by its nominal size in inches, which means the actual size rounded up to the nearest inch or by its actual size in millimeters. Most hardwoods are dried to a 6% - 8% moisture content thus causing the lumber to shrink. For instance, 38 × 89 mm (1-1/2 × 3-1/2 in) material is referred to nominally as 2 × 4 lumber. See more. are generally known as framing or dimensional lumber. Synonyms . Measure the actual width and thickness of a pine board (like a 2x4) and then look at the sign above the rack. Plastic Lumber has signed a letter of intent to test and incorporate post consumer carpet as a key ingredient for use in its DuraTie(R) composite railroad crossties, Trimax(R) dimensional lumber, … Dimensional lumber, used extensively for framing houses and other structures, is originally cut to certain dimensions of width and thickness. The grade mark can include "1W" or "2W" if visually graded to the wane requirements for No.1 or No.2 dimension lumber… Premium Dressed Lumber Kiln Dried 6-8% Cabinet Grade Our lumber is durable, smooth, and ready to be used for a variety of construction and home renovation projects The Royal Wood Shop has a large inventory of lumber products in stock and ready to ship in Toronto and throughout the GTA. Hmm. Lumber is graded based on the quality and appearance of the wood. Dimension lumber is solid sawn wood that is less than 89 mm (3.5 in) in thickness. Grades refer to the quality, strength and appearance of the wood. yes, rough and inconsistent. There are woods that are dried to even higher moisture content espe In trying to reshape a large uneven log composed of complicated grain patterns into usable lumber can cause reactions that produce low-quality lumber. Characteristics 4a). The reasons why the nominal dimension of this lumber (what the lumber is called) is larger than the actual dimensions involves historical practices in the lumber industry. Using span tables to size joists and rafters is a straight-forward process when you understand the structural principles that govern their use. Dimension lumber is often called by these names, two by fours, two by sixes, etc. Enter S2S. The actual size is always a little bit smaller. An Overview of Lumber Grades and Wood Quality. Use when both strength & appearance are important. Construction lumber is the basic wood material you use to build stuff, from walls to sheds to doghouses. After the board is dried and planed it becomes its actual size of 1 1/2″x3 1/2″. This was known as saw sizing and the width was usually 1/4-inch scant of the nominal width. by Paul Fisette – ©2003 Wood is naturally engineered […] Timber definition, the wood of growing trees suitable for structural uses. Before we get into the different grades of lumber, let’s take a look at the various defects you may find in a piece of lumber.. Common Lumber Defects All Free. dimension … Synonyms . If the kerf on this log is reduced to 0.180 inch, the pattern shift results in a 2 by 6 rather than a 2 by 4, with an increase in lumber yield from 64 to 69-1/3 board feet–an 8.3 percent increase (fig. Some softwoods such as pine are dried to between 9% - 12%. Lumber is a wood product, sawn and shaped from timbers of harvested trees. dimension lumber - WordReference English dictionary, questions, discussion and forums. The label put on the lumber you buy is called the “nominal” lumber size. and it is not length specific. Measured in inches, the most commonly known dimensional lumber is the “two-by-four,” or 2x4 (approximately 5.1 x 10.2 cm). This high quality lumber is ideal for a wide range of structural and nonstructural applications including framing of houses, barns, sheds and commercial construction. Lumber mills ink-stamp each board with a lumber grade. 4b). x 6 in. dimension lumber (fig. If stock is surfaced green it is made larger than the dressed size of dry stock so that when it dries and shrinks it will be the same size as the dried stock. The lengths and sizes of joists vary depending on the species and quality of the lumber used. This wood is commonly used for framing walls and floors in our homes and regularly used for building wooded crates and pallets.Since no one likes unexpected dimensional errors, the handy chart below outlines the changes in dimensions you can expect: DIMENSIONAL LUMBER Softwood lumber is sold by designating its nominal size. #1 Grade Lumber. Lumber definition is - to move ponderously. Dimension lumber, also known as dimensional lumber, is the common term for lumber cut to standard width and depth, and it is measured by inches.Common sizes are 2X4’s, 2X6’s, and 4x4’s. What Different Types of Lumber Grades Mean. x 16 ft. #2/BTR KD-HT SPF Dimensional Lumber Every piece of Kiln-Dried Dimensional Lumber Every piece of Kiln-Dried Dimensional Lumber meets the highest grading standards for strength and appearance. The definition of BF refers to a base volume that must be adjusted according to the specific type of lumber that is being measured. Dimensional lumber is commonly S4S. These depend on various factors like the type of wood used and the number and types of defects, if any. WWPA grades for dimension lumber are established by the American Lumber Standard Committee, Inc., in accordance with DOC (U.S. Department of Commerce) Product Standard 20. dimensional lumber (usually uncountable, plural dimensional lumbers) Lumber that is finished/planed and cut to standardized width and depth specified in inches. . Nominal refers to the dimension the lumber was sawn. Some information contained in it may be outdated. The letter "M" stands for 1,000 in the lumber industry, so "MBF" is the abbreviation for 1,000 board feet. . dimension lumber; Translations Dimensional Lumber Softwoods (pine, spruce, fir, etc.) Most people chose this as the best definition of dimension-lumber: Lumber cut to standard si... See the dictionary meaning, pronunciation, and sentence examples. dimension lumber (usually uncountable, plural dimension lumbers) Lumber cut to standard sizes. bringing dimension lumber to a uniform width by passing each piece through a small edger or rip saw before shipping. Dimension Lumber grades are divided into the following classifications: logs or timber cut for use; to move in a slow, clumsy, noisy way: He lumbers along like an old, angry bear. MSR lumber is distinguished from visually stress graded lumber in that each piece is non-destructively tested. As with the visual grades of dimension lumber or structural timbers, the grade description of structural logs is a combination of limits on characteristics that affect strength and characteristics that might affect serviceability for the intended application, but not necessarily strength. (Note: both hardwood and softwood dimension lumber are often piece tallied and are S4S to 1/2” to 3/4” off nominal width and 1/4” to 1/2” off nominal thickness.) This lumber needs to be planed smooth and flat before being sized for the project at hand. S4S finished lumber and dimensional lumber are labeled according to nominal size, or the size of the rough board before it was planed smooth. (M 15 1924) Kiln Drying: The process of taking the moisture out of green or “fresh cut” lumber. Log Length (Feet) Figure 3.–Apparent effect of log length on the lumber. 2 in. Something doesn't quite match up. dimensional lumber, dimension stock, dimension scantling; Related terms . By its nature, wood is not of uniform consistency and therefore will contain defects that impact the appearance of the lumber that is created from the wood material, and which may impact the structural characteristics as well. Dimension lumber synonyms, Dimension lumber pronunciation, Dimension lumber translation, English dictionary definition of Dimension lumber. For example, you can span a #1 grade (no knots) southern yellow pine a greater distance than a #2 grade (with knots) southern yellow pine. How to use lumber in a sentence. Dimensional Lumber Grades. The word lumber is considered to be an easy one, according to the Dale-Chall word list, which includes 3000 words that all fourth-grade American students should know and understand.. Lumber (to move slowly and awkwardly) is considered to be an advanced word, according to the Kaplan GRE Exam Vocabulary in a Box, which includes 500 college- and graduate-level words that frequently appear on … These are defects found in lumber that are caused by sawing and dressing lumber. Dimension Lumber – Lumber cut or S4S to predetermined specific width (sometimes also to length) 1”x4”, 2’x4”, 2”x6”, 4”x4” – 8”, etc. Please note: This older article by our former faculty member remains available on our site for archival purposes. Softwood lumber is sold in standard lengths of two-foot multiples ranging from 8 ft. to 24 ft. A saw that cuts lumber from a log is very large and aggressive, so the resulting lumber is known as “rough sawn” and the surfaces of the boards are . (For example, 1 x 6 is actually 3/4 x 5 1/2). When a 2×4 is cut out of a log it is 2″x4″. The grading rules are published in the Western Lumber Grading Rules book. 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