View Full Version : Weight of wood
Charles Bruno
06-14-2007, 7:42 PM
This is not really woodworking but I'm trying to find out how much a 8' 2x8 Douglas fir board wieighs. I'm raising the floor of a bus my son bought. I'm concerned about the weight, I suggested using metal studs. He would like to see the difference between the two. Any help will be greatly appreciated.
Greg Funk
06-14-2007, 8:22 PM
Approx 10 lbs assuming a density of 530 kg/cu m.
John Schreiber
06-14-2007, 10:37 PM
I found this page (http://www.engineeringtoolbox.com/weigt-wood-d_821.html) by Googling "Weight of Wood".
It says Douglas Fir weighs 33 lbs per cubic foot. An 8' 2" x 8" (8 x 1.5x 7.5 / 144) is 0.625 cu ft.
So, according to that it would weigh 20.625 pounds. Not sure why I would come up with a different weight than Greg.
Greg Funk
06-14-2007, 10:45 PM
Sorry, my mistake. I gave the weight for a 2 x 4.
DAVID CASHDAN
06-14-2007, 11:00 PM
http://www.woodweb.com/knowledge_base/Calculating_the_weight_of_lumber.html
website with article by Professor Eugene Wengert :D
dave
Charles Bruno
06-15-2007, 10:36 AM
Thanks every one! This really helps. I found the weight of sheet goods but missed lumber.As usual a question asked a question answered!
Thanks again.
Mike Running
06-15-2007, 4:56 PM
S-DRY (surfaced dry) DF weight is 2000#/MBM
or 21.3# for the 2x8x8' board.
S-GRN (surfaced green) DF is 2500#/MBM or 26.6# for your board.
These are what are called "association weights" and will vary as the
lumber seasons. For reference the S-DRY requires the wood to have
a moisture content of 19% or less.
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