2x4s are not actually 2 inches by 4 inches. When the board is first rough sawn from the log it is a true 2×4 but the drying process and planning of the board reduce it to the finished 15×35 size.
2 In X 4 In X 96 In Premium Kiln Dried Whitewood Stud 161640
Nominal Vs Actual Lumber Sizes What S A 2×4 Really Yard Home
Nominal Vs Actual Lumber Dimensions
The term stud is used inconsistently to specify length.
2×4 lumber actual size. For an eight nine or ten foot ceiling height studs are available in 92 58 inches 235 cm 104 58 inches 266 cm and 116 58 inches 296 cm. But these sizes are not the actual 13 dimensions 24 dimensions 26 dimensions 28 dimensions and 44 dimensions of the wood. Lumber depth and width are typically given in nominal dimensions but those arent the true sizes.
When the board is first rough sawn from the log it is a true 2×4 but the drying process and planing of the board reduce it to the finished 15×35 size. The lumber is then sold as a 2×4 because the cost of the drying and machining are figured init is also much easier to refer to a. Commercial standard lumber sizes table chart.
2x board sizes these boards lose 12 inch in thickness and 12 inch in width before leaving the mill. Where the exact length matters one must specify the length explicitly. Which means for example three 2×4 boards laid side by side will not measure a foot across.
Most lumber is sold in nominal in name only sizes such as 13 24 44 and2x2 lumber. Rough lumber cannot be less than than 18 32mm thicker or wider than the nominal finished thickness or width except that 20 of a shipment cannot be less than 232 24mm thicker or wider. Usually there is 12 inch difference in measurements over 2 inches and 14 inch in measurements less than 2 inches.
Dry lumber that has been seasoned or dried to a moisture content 19 or less and green lumber has a moisture content of greater than 19. Thus the nominal size of the lumber you purchase is different from the actual size. At this point the 2 x 4 is actually 2 inches x 4 inches a 2 x 10 is actually 2 inches x 10 inches etc.
When the inch symbol is used is lumber measurements it indicates that you are referring to the actual size. However there is a difference between the nominal size what the lumber is referred to and the actual size. Actual dimensions and nominal dimensions.
Dimensional lumber is cut to a specific length width and depth. The true measurement of a 2×4 is actually about 15×35. Lumber manufacturers typically cut a tree into the various standard types of dimensional lumber very shortly after the tree is felled.
The tables below provide both the nominal and actual sizes so many common north american lumber sizes. But then the newly sawn. The chart below shows the actual dimensions of lumber when it is dry when wet it will be slightly larger.
Because a nominal 2×4 board is really 1 12 inches by 3 12 inches. That means a 2 x 4 board is actually 1 12 inches by 3 12 inches. Here are the common sizes of lumber and their actual sizes.
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