Increased STUD Grade Yield of Plantation Southern Pine by Saw-Dry-Rip
Title | Increased STUD Grade Yield of Plantation Southern Pine by Saw-Dry-Rip PDF eBook |
Author | Robert R. Maeglin |
Publisher | |
Pages | 12 |
Release | 1986 |
Genre | Loblolly pine |
ISBN |
Effect of Drying Methods on Warp and Grade of 2 by 4's from Small-diameter Ponderosa Pine
Title | Effect of Drying Methods on Warp and Grade of 2 by 4's from Small-diameter Ponderosa Pine PDF eBook |
Author | William Turner Simpson |
Publisher | |
Pages | 20 |
Release | 2001 |
Genre | Lumber |
ISBN |
Two studies were performed to characterize and control warp in nominal 2- by 4-in. (standard 38- by 89-mm) dimension lumber sawn from small-diameter ponderosa pine trees. One study was conducted at a commercial sawmill with trees harvested in central Arizona. The other study was conducted at the USDA Forest Service, Forest Products Laboratory, Madison, Wisconsin, in small experimental kilns with lumber from trees harvested in central Idaho. The three main variables in the studies were top loading, presteaming, and a high-temperature kiln schedule. A limited study of hot press drying was also included. The high-temperature kiln schedule in the experimental kilns reduced drying time to about half that of the conventional temperature schedule. Press drying time was slightly more than 3 h. Crook and bow caused most of the warp and the grade loss from warp. There was no evidence that presteaming affected warp or grade loss from warp. Top loading had a modest effect in reducing warp and grade loss from warp. High-temperature drying did not affect measured warp compared with the conventional temperature schedule. Grade loss from warp was less in high-temperature than in conventional temperature dried lumber. This might be explained by differences in moisture content change during storage. Press drying did not reduce warp or grade loss from warp.
Research Paper FPL
Title | Research Paper FPL PDF eBook |
Author | |
Publisher | |
Pages | 682 |
Release | 1985 |
Genre | Forest products |
ISBN |
Increased STUD Grade Yield of Plantation Southern Pine by Saw-dry-rip
Title | Increased STUD Grade Yield of Plantation Southern Pine by Saw-dry-rip PDF eBook |
Author | Robert A. Maeglin |
Publisher | |
Pages | 8 |
Release | 1986 |
Genre | |
ISBN |
Research Paper FPL-RP
Title | Research Paper FPL-RP PDF eBook |
Author | |
Publisher | |
Pages | 354 |
Release | 1986 |
Genre | Forest products |
ISBN |
Strength and Stiffness of Light-frame Sloped Trusses
Title | Strength and Stiffness of Light-frame Sloped Trusses PDF eBook |
Author | Ronald W. Wolfe |
Publisher | |
Pages | 770 |
Release | 1986 |
Genre | Roof trusses |
ISBN |
Dividends from Wood Research
Title | Dividends from Wood Research PDF eBook |
Author | |
Publisher | |
Pages | 16 |
Release | 1986 |
Genre | Forests and forestry |
ISBN |