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Why is my 2x4 lumber not 2 inches by 4 inches? Many decades ago, lumber purchased from a sawmill physically matched the common dimensions we use today. So why does that pine or spruce 2x4 from your local lumber yard now come up short? The short answer is modern surfacing and shrinkage. Over time we've come to accept these nominal (approximate) dimensions as standard. But there's still a catch. Shrinkage can be highly variable. This makes it very difficult to manage and regulate dimensional accuracy.  Dimensional lumber is a term given to boards cut to standard sizes (specified in inches). This page has been updated and permanently moved to: https://www.nelsoncompany.com/blog-post-basic-rules-of-dimensional-lumber-nominal-vs-actual.cfm 9/29/2020 03:50:17 pm
this is very interesting because when I have measured wood the length is generally the same however the width differs
David Marwitz
7/31/2021 11:00:58 pm
Not long ago you could get a sheet of OSB, plywood, or other sheet goods and a 4 X 8 sheet was exactly that. Now they have been shorting the sheet goods by 1/8th width and length. Where does it stop, it's happening with everything including our food. Charge the same or more for less! Comments are closed.
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