Ball park? About 16 pounds per foot for your 6 x 12 Douglas fir beam. We all know that Doug fir will vary in moisture content and all that. And when you try to pin a density on it, the number skates around a bit. But having seen a half dozen different cites for the density, this one works well. And it's kinda "in the middle" of the pack.
555 lbs.
12-14 in./yr
$14
John Douglas was born on July 14, 1721.
John Douglas was born on July 14, 1721.
Emmitt Douglas was born on 1926-10-14.
Denzil Douglas was born on 1953-01-14.
Douglas Costa was born on 1990-09-14.
Douglas A. Zembiec was born on 1973-04-14.
Albert Douglas died on 1935-03-14.
Douglas Leigh died on 1999-12-14.
Yes you can
Clarence Arlen Beam was born on 1930-01-14.