"Mark & Juanita" wrote in message
m...
basilisk wrote:

American lumber standards has changed the dressed sizes
of timbers larger 7 inches to be 3/4's inch smaller than
nominal size.

8x8's that used to be dressed to 7.5x7.5 inches will
now be 7.25x7.25.

Just passing this along.

http://www.alsc.org/greenbook%20collection/ps20.pdf

basilisk


Is this only timbers and not dimension lumber?

Give it a few years and you're going to have to order a 7 x 7 to get a
6x6.

The sizes of dimension lumber hasn't changed, I believe the reason
for the change is that the density of timber isn't what it used to be
and shrinkage in rough lumber was such that it made the old size
hard to dress completly out.

This only applied to timbers larger than 7 inches so the 6x6 size won't
change, at least not anytime soon.

basilisk