Dimensional lumber measurements

Dimensional lumber is cut to a specific length, width, and depth. However, there is a difference between the dimensional lumber measurements size what the lumber is referred to and the actual size. The tables below provide both the nominal and actual lumber dimensions for many common North American lumber sizes.

To the novice do it yourselfer softwood lumber sizes can be hard to understand. The first dimensions are its nominal ones, the second measurements are its actual or minimum dressed sizes. The reason for the differences is because lumber sizes are traditionally given in their nominal size. This is a well-established industry practice. The actual measurements are the final sizes after drying and surfacing. Green southern pine lumber shrinks in width and thickness as it dries.

Dimensional lumber measurements

To the novice do it yourselfer softwood lumber sizes can be hard to understand. The first dimensions are its nominal ones, the second measurements are its actual or minimum dressed sizes. The reason for the differences is because lumber sizes are traditionally given in their nominal size. This is a well-established industry practice. Why are the nominal dimensions of lumber larger than the actual dimensions? The actual measurements are the final dried and surfaced size. A few years ago consumer groups brought several lawsuits against some of the big box stores and a few hardware and building supply chains for false advertising by selling lumber that they maintained, was undersized. The courts eventually found that lumber sizes are appropriately described in nomina l inches in the US, or in millimeters in other countries. Builders, design engineers, architects, lumber buyers, and sellers of lumber are all familiar with the differences between the nominal and actual sizes of lumber. The lawsuits were settled, and it was found that the use of nominal sizes to describe lumber sizes was a long-standing and accepted standard industry practice.

This form is no longer accepting new submissions. According to NIST Publication P20actual lengths must be at least equal to the nominal length, but can be up to 3" longer than the nominal length. Dimensional lumber is cut dimensional lumber measurements a specific length, width, and depth.

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To the novice do it yourselfer softwood lumber sizes can be hard to understand. The first dimensions are its nominal ones, the second measurements are its actual or minimum dressed sizes. The reason for the differences is because lumber sizes are traditionally given in their nominal size. This is a well-established industry practice. Why are the nominal dimensions of lumber larger than the actual dimensions? The actual measurements are the final dried and surfaced size. A few years ago consumer groups brought several lawsuits against some of the big box stores and a few hardware and building supply chains for false advertising by selling lumber that they maintained, was undersized. The courts eventually found that lumber sizes are appropriately described in nomina l inches in the US, or in millimeters in other countries.

Dimensional lumber measurements

Confusing, right?! I totally agree but there is a good explanation to this madness. The nominal dimensions are the size of the board before it is ran through the planer, squared to size and kiln dried. That is why the actual size is always smaller than the nominal lumber size we have known to call them. You will notice they have two sizes for your boards. The actual lumber size will be stated towards the bottom of the price sticker.

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Dimension lumber is lumber cut and finished S4S, surfaced four sides and is available in standardized sizes. According to the American Wood Council, the National Institute of Standards and Technology permits stores to label lumber with nominal dimensions. Softwood lumber is generally used for framing walls and floors. Why are the nominal dimensions of lumber larger than the actual dimensions? This is a well-established industry practice. The first dimensions are its nominal ones, the second measurements are its actual or minimum dressed sizes. The size labels now have a new requirement. The size labels now have a new requirement. Forward Pricing. The tables below provide both the nominal and actual lumber dimensions for many common North American lumber sizes. To the novice do it yourselfer softwood lumber sizes can be hard to understand. The courts eventually found that the US of lumber sizes is in nomina l inches in and in millimeters in other countries. Why are the nominal dimensions of lumber larger than the actual dimensions?

Dimensional lumber is cut to a specific length, width, and depth.

Green southern pine lumber shrinks in width and thickness as it dries. Sherwood February 28, This form is no longer accepting new submissions. The length of dimension lumber can range from 6 to 24 feet. Article Contents. However, there was one change mandated by the courts. Now you understand why the nominal size is different from the actual size. The nominal size is the standard terminology and is applicable when for buying, selling, and specifying softwood lumber. Suite W Melville, NY The tables below provide both the nominal and actual lumber dimensions for many common North American lumber sizes. Recent Posts. To the novice do it yourselfer softwood lumber sizes can be hard to understand.