Yesterday I was about to demo an old building. I was about to take the chain saw to the rotted wood and just throw it all on the fire wood pile.
I figures I would remove the wood, pull the nails and attempt to rip off the deterioration with a table saw.
I took 2x12 and cut them down to about the sixe of 2x10, actually 10 inches wide and had some 2x6 that got turned into heavy 2x4, because they are actually 4 inches wide now. Saved at least a few hundred dollars, a tree or 2 and still got a little bit of fire wood.