1992 Data Bank for Red Oak Lumber

Abstract

The 1992 Data Bank for Red Oak Lumber is a collection of fully described FAS, Selects, No.

Potential for Yield Improvement in Combined Rip-First and Crosscut-First Rough Mill Processing

“…Because of its importance to the industry (Espinoza et al 2011) and the availability of a large data bank of digitized boards, red oak, Quercus rubra, was used for this study (Gatchell et al 1998). Listed in order from highest to lowest grade quality (NHLA 2011), the grades or the grade mixes used were: 1) 100% FAS; 2) 50% FAS/50% 1 common; 3) 100% 1 common; 4) 25% FAS/25% 1 common/50% 2A common; 5) 50% 1 common/50% 2 common; 6) 100% 2A common; and 7) 67% 1 common/33% 3A common.…”

“…Listed in order from highest to lowest grade quality (NHLA 2011), the grades or the grade mixes used were: 1) 100% FAS; 2) 50% FAS/50% 1 common; 3) 100% 1 common; 4) 25% FAS/25% 1 common/50% 2A common; 5) 50% 1 common/50% 2 common; 6) 100% 2A common; and 7) 67% 1 common/33% 3A common. Each grade mixed sample was replicated 10 times, with each being a random sample from the entire kiln-dried red oak data bank (Gatchell et al 1998;Buehlmann and Zuo 2008). Each cutting bill was processed once using each processing method (rip-first, crosscut-first, and dual-line), and each of the 10 random digital lumber samples for each lumber grade mix for each cutting bill.…”

“…ROMI 4 (Grueneberg et al 2012;Thomas et al 2014b), the U. S. Forest Service's rough mill simulator, which was designed to simulate a wide range of rough mill processes using digitized board data of various grades (Gatchell et al 1998) and using custom-created cutting bills that can consist of as many as 300 solid, panel, or randomlength components, was employed. The settings for all the simulation runs used in this manuscript were as follows:…”

ROMI 4.0: Rough mill simulator 4.0 users manual

“…This window is where you choose files containing digitized boards from the databank ). The top box shows the available board files (see Gatchell et al 1998 for more information about the content of each board file) and the bottom box shows the selected board files to use. To choose a board file, double click on the name of the file and it will be shown in the bottom box.…”

“…You also have the ability to see the width class (e.g., the class-wise distribution of widths, rounded to the next inch, Gatchell et al 1998) over standard length distribution of a chosen board data set by clicking on the Data Graph button. Figure 5.2.8 shows the width class of a standard length distribution of a 1 Common board data set based on the 1998 Gatchell database ).…”