I as at Home Depot on the weekend and saw firewood bundles, for home fireplace
consumption, measured in cubic decimetres. I can't remember the company's name, but
they were based out of Alberta.
The label properly read "45 dm�" (i.e. 45 dm^3). So did the in-store sign advertising
the product. This leads me to believe that if dimensional lumber was sold as 40 x 90
mm rather than 2x4 then the signs in the stores would reflect this as well.
According to Canadian legislation firewood can only be sold by the "cord", or the
"cubic metre and it's multiples". Not many people know what a cord of wood is. Not
many people know/remember that a cubic decimetre equals one litre, either,
unfortunately. These SI units are just not used frequently enough for the
"un-obsessed" to recall the simple beauty of the system's relationships. :)
greg