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2 hours ago, Lissa Hall said:

So basically starts out as 2x4?? But shrinks?? Probably didn't understand correctly my mind has been kinda messed lately

Yes. They put it in a kiln to dry the wood. When it is done currently you get a 1 1/2 x 3 1/2 inch size.

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Thank you, Lisa, for creating this thread.  I had the thought that it was only greed from companies.  Thank you, John, for making it clear about the process of how the lumber actually shrinks, but it is also sanded and routed on the corners, which reduces the size.  Now, I am wondering if these new standards are of equivalent strength as the old actual 2" X 4".  Does anyone know if the strength is the same or if it has significantly changed?

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4 minutes ago, FlGatorwood said:

Now, I am wondering if these new standards are of equivalent strength as the old actual 2" X 4"

I have been told yes in fact better.  BUT, they are using quick grown trees not old growth trees.  So I am doubting that claim.  

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18 hours ago, FlGatorwood said:

  Now, I am wondering if these new standards are of equivalent strength as the old actual 2" X 4".  Does anyone know if the strength is the same or if it has significantly changed?

Sometime about 1990 there was a revision in the allowable strength calcs for structural wood (and I think specifically "fir" types) that caused a stir (the de-rating was severe....50%?).  I don't think it was caused by any nominal dimension change, though.  

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12 hours ago, Gerald said:

Something to consider when buying hardwood in my understanding is that the board foot is calculated based on size from the kiln before planing is done( if you buy S4S)

That's right Gerald, I know when I buy 4/4 from my local hardwood dealer, it is 3/4" net. Yet it's advertised as 4/4, and it's S3S. If I want a true 1" I purchase 5/4 and so on.

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