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Sep 22, 2022 · 4/4 means approximately 1″ thick. 5/4 means approximately 1-1/4″ thick. 6/4 means approximately 1-1/2″ thick. 8/4 means approximately 2″ thick. 12/4 means approximately 3″ thick. But there’s more. To know what the actual measured thickness is, you need one more identifier such as S2S or RGH. S2S means “surfaced two sides,” and ...
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Apr 20, 2023 · In woodworking, the fractions like 4/4, 5/4, 6/4, 8/4, 10/4, and 12/4 represent the thickness of lumber in quarters of an inch. Specifically: 4/4 means the wood is approximately 1 inch thick. 5/4 indicates a thickness of about 1.25 inches. 6/4 is approximately 1.5 inches thick. 8/4 refers to wood that is about 2 inches thick.
In simple terms, 4/4 lumber is actually 1 inch thick, while 5/4 lumber is 1 1/4 inches thick. But that’s not all! The thickness is also related to the type of lumber and its intended use. 4/4 lumber is typically used for general framing, fencing, and decking, while 5/4 lumber is better suited for decking, siding, and exterior trim, where its extra thickness provides added weather resistance ...
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For example, a 2×4 board is actually 1 1/2″ x 3 1/2″. The board is advertised and sold using nominal dimensions, which are a bit larger than the actual dimensions.
The table below shows the actual size versus the nominal size of various dimensional lumber products. If you’re stuck without a tape measure or reference table, you can also use a simple rule of thumb to determine the actual size of dimensional lumber. 1. If the nominal size is smaller than 1″ then the actual size is 1/4″ smaller than the nominal s...
Historically, softwood logs were cut green into 2″ x 4″ planks but would naturally shrink as the boards dried out, and after planing and milling, they ended up around 1-1/2″ x 3-1/2″. Today, boards are intentionally cut large to allow for shrinkage during kiln drying and the milling process. Because the amount a board shrinks can vary by wood speci...
Mar 15, 2019 · 4/4 means approximately 1″ thick. 5/4 means approximately 1-1/4″ thick. 6/4 means approximately 1-1/2″ thick. 8/4 means approximately 2″ thick. 12/4 means approximately 3″ thick. But there’s more. To know what the actual measured thickness is, you need one more identifier such as S2S or RGH.
Jun 20, 2024 · This code is used to describe the thickness of a board and is based on fractions of an inch. In the case of 4/4 wood, the board is 1 inch thick, but the fraction is still used to describe it. Here’s a breakdown of the most common lumber thicknesses and their corresponding codes: 4/4 – 1 inch thick. 5/4 – 1.25 inches thick. 6/4 – 1.5 ...
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Jul 22, 2022 · The numbers given for the size of a piece of lumber when you buy it at the store are nominal lumber sizes or measurements. ... 1 x 12 Actual Size: 3/4 x 11-1/4 ...