AUTOSAW simulations of lumber recovery for small-diameter Douglas-fir and ponderosa pine from southwestern Oregon.

Effect of habitat-improvement thinnings on lumber products from coastal Douglas-fir

“…However, tolerance for wane can be adjusted on the simulator; and for this study we increased production by setting the maximum allowable wane to 0.4 inch (app. 3), twice the allowance used by Barbour et al (2003). A 0.4-inch allowance for wane is not unusual in mills of the type that process Douglas-fir in the area, as verified by a database on second-growth Douglas-fir lumber recovery studies maintained by the wood-quality research team at the PNW Station.…”

“…Lumber volume recovery-AUTOSAW has previously been shown to provide reasonably close estimates of the volume of lumber from second-growth Douglas-fir logs. Barbour et al (2003), for example, found that AUTOSAW simulations underestimated actual lumber production for a set of sample logs by only 10 to 15 percent, likely because the simulator avoids producing lumber with wane, which can reduce lumber grade. However, tolerance for wane can be adjusted on the simulator; and for this study we increased production by setting the maximum allowable wane to 0.4 inch (app.…”

Iskorištavanje borovine (Pinus sylvestris L.) s greškama za proizvodnju kompozitnog drva

“…The use of thin logs in the production of engineered wood products results in a significant loss of wood in the form of large and small waste, especially when multiple knots are present. The method of gluing quality wood after removing its flaws provides excellent opportunities for utilizing low-quality and thin round wood (Barbour et al, 2003;Hernandez et al, 2005;Lyhykainen et al, 2009).…”