Nominal Lumber Knowledge
Nominal lumber knowledge is post about Shop Blog bookmarked by ted with ID 12506981048 was uploaded on 06-04-2019 and has been viewed 362,928 times.
I don't know exactly when I learned that a 2×4 isn't 2″ x 4″, but I'm quite sure it was well before I joined the staff of Popular Woodworking.I studied English literature and journalism in college, and took one shop class in grade school that covered little more than basic turning - no construction.
When I was a kid, I was busy playing soccer and bugging my mom to let me take riding lessons, not building stuff.And neither of my parents built stuff, either (though I recall hearing some cursing during a DIY tiling job).
My grandfather built stuff, but it wasn't until I was in my 20s that I ever joined him in the shop.Yet I knew as a kid that '2×4' was a nominal measure (though I wouldn't have at the time used that term), not the actual width and thickness of the stick in question.
And just look at a 2×4 - it is clearly not 2″ x 4″.Commercial construction lumber hasn't matched its nominal S2S size when dry since 1906, according to the 1964 the Forest Products Laboratory 'History of Lumber Sizes' report.
And the current standards have been around since before I was born -...