Mike Oehler's engineering tables spec out the girders and beams to be Fir / Larch.
Can I use those engineering tables with other types of wood? Does it make a big difference what type of tree you use? Are hardwoods or softwoods better?
I'm THIS CLOSE to ruling the world! Right after reading this tiny ad:
a new overhaul of the freeheat page - need feedbacks for world domination