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3 days ago · Understanding the Nominal vs. Actual Dimensions of a 2x4 The term ‘2x4’ originates from the nominal dimensions—essentially, the rough-sawn size before finishing. Historically, a …
Apr 17, 2025 · To help you quickly identify and reference common lumber sizes, we've created a printable dimensional lumber chart with proportional visuals. It’s perfect for your shop wall, …
Aug 1, 2025 · In 1961, the American Lumber Standards Committee (ALSC) established official dimensional standards for lumber, solidifying the size reduction we know today. A “2×4” now …
Early concepts called for rough lumber to be of full nominal size, often in the dry condition. After World War I, the increasing demand for construction lumber led to the first national size standard …
Feb 22, 2025 · A comprehensive chart that shows nominal lumber dimensions and their actual sizes in inches and millimeters. I also explain why they are different.
Sep 10, 2023 · Discover why a 2x4 is not 2 by 4 inches. Follow the evolution of lumber size over time. Learn about nominal vs actual dimensions in modern standardized lumber
Dec 16, 2024 · Originally, “2x4” referred to the actual measurements of the lumber: 2 inches by 4 inches. By 1960, the industry began standardizing the dimensions to a smaller size, factoring in …
In April 1919, attendees of the first American Lumber Congress called for size and terminology standardization. However, disagreement about specific considerations persisted for decades.
Demand for lumber in World War II led to the shipment and use of large quantities of lumber dressed green to standard sizes. That use has continued to the present time, while experience …
The first efforts to standardize lumber began in 1922 and resulted in the American Lumber Standard, first published in 1924.
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