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Several hardwood timber bridges were constructed in Pennsylvania during the early 1990s. This report summarizes the long-term field performance of seven stress-laminated deck bridges over a 4-year period beginning August 1997 and ending July 2001. Data collected include lumber moisture content,…
Author(s): James P. Wacker, Carlito Calil, Lola E. Hislop, Paula D. Hilbrich Lee, James A. Kainz
Keywords: Stress-laminated deck, timber, wood, highway bridge, red oak, beech, hardwood
Source: Res. Pap. FPL-RP-612. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 2004. 56 pages
Year: 2004
This publication provides a broad spectrum of information on the hardwood veneer industry in North America. Veneer manufacturers and their customers impose guidelines in specifying wood quality attributes that are very discriminating but poorly defined (e.g., exceptional color, texture, and/or…
Author(s): Jan Wiedenbeck, Michael Wiemann, Delton Alderman, John Baumgras, William Luppold
Keywords: veneer, quality, hardwood, slicing, appearance-grade, flitch
Source: Gen. Tech. Rep. NE-313. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station. 36 p.
Year: 2004
There are two kinds of tests for routine measurement of tree seed moisture, (1) accurate measurement (such as official International Seed Testing Association tests) and (2) rapid estimates.
Author(s): F.T. Bonner
Keywords: Seed storage, moisture meters, hardwood, conifers
Source: Res. Pap. SO-177. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 10 p.
Year: 1981
Lack of information on the status of hardwoods, particularly oaks (Quercus sp.), is creating concern in California that continued fuelwood harvest will aggravate erosion and sedimentation (Pillsbury et al. 1983). This concern is unsupported by data from the West Coast because few data exist, a…
Author(s): Theodore E. Jr. Adams, Raymond M. Rice
Keywords: PSW4351, erosion, sedimentation, fuelwood, hardwood, California
Source: Western Journal of Applied Forestry 4(1): 31-33.
Year: 1989
Wettability of sanded and non-sanded transverse and tangential sections of 22 southern hardwoods species was judged by measurement of contact angles using phenol formaldehyde resins. As expected, contact angle values on transverse sections were higher than those on tangential sections for both…
Author(s): Todd F. Shupe, Chung-Yun Hse, Wan H. Wang
Keywords: Contact angle, drying, hardwood, phenol formaldehyde resins, wettability
Source: Holtzforschung 55(5):541-548
Year: 2001
Cutting yields from gang ripping hardwood lumber graded by the National Hardwood Lumber Association standard grades are determined using the technique of mathematical modeling. The lumber used is the same as that in an earlier mathematically modeled determination of cutting yields from traditional…
Author(s): Hiram Hallock, Pamela Giese
Keywords: Gang ripping, furniture, cutting yields, rough mill, mathematical modeling, hardwood, lumber
Source: Res. Pap. FPL-369. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 1980: 6 pages
Year: 1980
An Excel spreadsheet developed to solve the ion-exchange equilibrium in wood pulps has been linked by dynamic data exchange to WinGEMS and used to model the non-process elements in the hardwood bleach plant of the Mead/Westvaco Evandale mill. Pulp and filtrate samples were collected from the…
Author(s): Christopher Litvay, Alan Rudie, Peter Hart
Keywords: Excel spreadsheet, ion exchange, WinGEMS, NPE distribution, bleach mills, hardwood, models, prediction
Source: Proceedings of the 2003 TAPPI Fall Technical Conference: Engineering, Pulping and PCE & I, Session 18-2 : held October 26-30, 2003, Chicago, IL. [CD-ROM]. Atlanta, GA : TAPPI Press, 2003.
Year: 2003
Lumber yield nomograms developed during the last 30 years have limited use when predicting the volume of rough lumber required to fill a particular cutting bill. Inaccuracies occur when nomogram yields are applied to situations in which processing technologies differ from those used during data…
Author(s): Kristen Hoff
Keywords: Rough mill, hardwood, lumber grade mix, lumber cost, simulation
Source: Gen. Tech. Rep. NE-270. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station. 8 p.
Year: 2000
Xiphydria decem, n. sp., is described and separated from other North American species. It was reared from branches of river birch, Betula nigra L., (Betulaceae) in Illinois.
Author(s): David R. Smith, Nathan M. Schiff
Keywords: Symphyta, woodborer, woodwasp, hardwood, birch, Illinois
Source: Proc. Entomol. Soc. Wash. 103(4) 2001. pp. 962-967
Year: 2001
This report shows pulpwood receipts at pulp mills in the United States for the period 1950-1989. It is a compilation of published and estimated data based on information from various sources, including the American Pulpwood Association, American Paper Institute, U.S. Bureau of the Census, and the…
Author(s): C. Denise Ingrain, Irene Durbak, Peter Ince
Keywords: Pulpwood receipts, U.S. regions, softwood, hardwood, roundwood, residues
Source: Gen. Tech. Rep. FPL-GTR-73. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 40 p.
Year: 1993