WebIn order to get to the required retention level, some species of lumber (such as Douglas fir, hem-fir, and spruce-pine-fir) have to be incised, which allows the preservative to penetrate the wood more deeply and uniformly. Tests conducted by Forest Product Laboratory have found that this practice results in a reduction in bending strength and ... Webtogether under the Hem-fir species grouping. Douglas-fir Douglas-fir is not a true fir, but what is it? We could devote several pages to this tree alone. Douglas-fir is a unique species that has given botanists fits. Over the years, botanists have called Douglas-fir a pine, a spruce, a hemlock, and a true fir. The wood products industry often ...
Douglas Fir vs. Eastern Hemlock - WoodenBoat
WebSep 27, 2011 · Douglas Fir is of the Psudotsuga genus (notice "kinda Hemlock" not "kinda Fir") It is the second tallest tree in North America and grows along the eastern coast and … WebOct 27, 2024 · The lumber is more brittle than Douglas fir, thus the limbs snap off more frequently. Hem fir is used for PT because it has a lower pitch content. The local PTers … sports games happening right now
Dimensional Lumber - WWPA
WebDec 20, 2024 · The framing lumber species will change for each region, such as Douglas Fir-Larch in the west and Hem-Fir in the east. Some projects require more than one type of wood. Advertisement Stamp for … WebJul 25, 2013 · 3. Jul 15, 2013. #7. Generally speaking dick is correct. Take a look at the photos I just posted Doug fir needles grow all around the branch. With hemlock it's a bit … WebDouglas Fir-Larch Species: Douglas Fir and Western Larch Color: Reddish-brown to yellow Characteristics: High degree of hardness, high resistance to decay Hem-Fir … sports games free to play