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Sizing standards for softwood lumber, hardwood lumber, and plywood can be confusing since actual dimensions do not match the nominal sizes.  If you are new to buying softwood and hardwood lumber for craft projects or home improvement work, one of the first things you notice is that the dimensions by which the wood is sold (called the nominal measurements) are not the same as the actual measurements. A piece of 1 x 4 pine, for example, actually measures 3/4 inch thick and 3 1/2 inch wide, while a 2 x 4 framing stud is actually about 1 1/2 inch thick and 3 1/2 inches wide. To further confuse things, hardwood sizing standards are different than softwood standards, and hardwood is typically sold by a unit of volume known as the board f. The two main lumber categories are softwood and hardwood. Softwood, which comes from conifer or evergreen trees, is softer and cheaper. Pine, spruce, fir, and cedar are softwoods.  And when I say homework, I mostly mean math. If it’s not your strongest subject, grab yourself a calculator. In fact, even if you’re a math whiz, use a calculator. This is one of those situations where you really, really, really want to be sure you’ve got the right numbers. When calculating the dimensions of the lumber you need, it’s important to know the difference between nominal and actual size. Nominal size is the size of a piece of lumber before it’s been smoothed. Softwood lumber in the United States is most commonly graded according to the guidelines of the American Softwood Lumber Standard PS , established by the U. S. Department of Commerce. Canadian softwood lumber imported into the U. S. is graded by inspection agencies in Canada that also adhere to the American Softwood Lumber Standard. For purposes of grading, softwood lumber may be categorized into two categories of intended use: construction or remanufacture. Construction lumber is lumber that will function as graded and sized after primary processing – sawing, surfacing, etc. It is commo. Mar 04,  · There are three broad classifications of softwood lumber: Yard, Structural, and Shop and Factory. Let’s take a look at each of them in detail. Yard Lumber. Lumber intended for ordinary construction and building purposes. Yard lumber is usually graded visually, meaning that an inspector looks at the lumber’s appearance to give it a grade. Cross-laminated timber (CLT) (a sub-category of engineered wood) is a wood panel product made from gluing together layers of solid-sawn lumber, i.e., lumber cut from a single - layer of boards is usually oriented perpendicular to adjacent layers and glued on the wide faces of each board, usually in a symmetric way so that the outer layers have the same orientation. Mar 16,  · “Though builders continue to see strong buyer traffic, recent increases for material costs and delivery times, particularly for softwood lumber, have depressed builder sentiment this month.
Related Topics. Please help improve this article by adding citations to reliable sources. Similar uses as No. Another distinction is that hardwoods are typically graded prior to drying and surfacing. The table below gives the names of the visual stress-graded grades and some idea of their mechanical properties.

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