If the wooden structure will be driven over, you can guarantee that a board at least 10 inches wide will be used. This type of board is also very common to use on decks as they will get a lot of traffic. The 2×8 board is also popular and is often preferred over the 2×8 board in recent years because it offers more support than a 2×6. This is the second most important board size. It is used as support for load-bearing walls and is needed for building houses in most cases. The 2×6 board is the most common board size, or rather the minimum board size, for foundations. But the width and thickness are usually set. This would be 8-feet, 10-feet, 12-feet, and so on. The boards are almost always sold in lengths where the number divisible by 2. But when in doubt, add a little bit of support with some 2圆s or 2x8s. That said, all interior walls and the majority of the frame can be built with 2×4 wood.Īs for projects, as long as you don’t need the item to hold your full weight with a good amount of psi, then using 2x4s will be just right. Though it cannot stand alone.Īlthough 2x4s are strong, it is recommended to use at least 2圆s for insulation and structural integrity purposes. The number one reason people buy 2 by 4 wood is to frame houses. This is the most popular and most versatile size of lumber board. Actual is the actual dimensions while nominal is the original dimensions before it was planed and treated. The way to tell if the board you are getting is 2×4 or 1-1/2×3-1/2 is to see if it says nominal or actual. You can count on treated 2×4 wood to be 1-1/2-in by 3-1/2-in. The end result usually takes half an inch off each side. That said, a rough-cut board is likely to be accurate.īut after the board is rough-cut at the lumber mill, it is smoothed down and treated. The name may suggest so but this is to take other things, like drywall, into account. The thing about 2x4s is that they aren’t really 2-inches by 4-inches thick. But a 2 by 4 board is more than meets the eye. But after centuries of contractors and architects studying board sizes, it has become the standard, outselling every other type of lumber by a longshot. The size and strength of the boards are what make them so popular. It is used for framing houses and in part of just about every other type of project. A 2×4 wood board is the most common type of lumber used in the world.
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