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| Title | Publication | Publish Year |
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Relationships of Specific Gravity to Tree Height in Commercially Important Species
The relationships of wood specific gravity to height-in-tree were investigated for 28 commercially important timber species. Data from wood density surveys of the U.S. Forest Service were interpolated to provide […]
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Forest Products Journal | 1972 |
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Relative Humidity, EMC, and Collapse Shrinkage in Wood
Small red oak (Quercus sp) specimens conditioned at very high humidities showed equilibrium moisture contents (EMC) between 60 percent and 30 percent and very substantial collapse type shrinkages at temperatures […]
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Forest Products Journal | 1984 |
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Relative softwood sawmill conversion efficiency by region of the United States
Accurate assessment of future trends in the supply of forest products depends, in part, on knowledge of regional softwood sawmill conversion efficiency. Data from 650 sawmill studies carried out in […]
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Forest Products Journal | 1988 |
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Remilling of salvaged wood siding coated with lead-based paint. Part 2. Wood product yield
Many U.S. military buildings being targeted for removal contain large quantities of potentially reusable wood materials. In this study, we evaluated approximately 2180 m (7,152 ft) of painted Douglas-fir siding […]
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Forest Products Journal | 2005 |
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Remilling of salvaged wood siding coated with lead-based paint. Part I. Lead exposure.
It is well known that the lead contained in lead-based paint (LBP) can pose a serious human health risk if ingested. In our nation?s building infrastructure, millions of meters of […]
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Forest Products Journal | 2005 |
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Removal of Emulsified Oil By Sorption on Southern Pine Bark
Emulsified oil, such as that used in metal-cutting operations, has been removed from an aqueous medium by sorption on southern pine bark. The procedure employed involves agitating the emulsion with […]
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Forest Products Journal | 1974 |
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Removing fungal stain from ponderosa pine by caustic bleaching
The potential of peroxide-based bleaching systems for removing fungal stain was investigated on ponderosa pine sapwood. Image analysis of specimens before and after treatment indicated that the use of 2 […]
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Forest Products Journal | 1995 |
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Research–A Basis for Structural Engineering with Wood
The economic use of wood for structures requires the application of non-destructive test methods to lumber grading. Some such methods are ready for adoption by industry. Information on probable loadings […]
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Forest Products Journal | 1962 |
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Residual Strength of Fire-Damaged Laminated Beams
Three 50-foot, glued-laminated, Douglas-fir beams damaged by fire were tested for residual strength by, bending 10-foot lengths from each end for longitudinal-shear strength, and by bending the remaining central 30-foot […]
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Forest Products Journal | 1974 |
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Residue Retention and Fungal Invasion of Chloropicrin-Treated Douglas-Fir
Chlorinated residues in amounts up to 1.5 percent of the ovendry weight of wood were present in Douglas-fir exposed to chloropicrin vapors for 240 days. These residues could not be […]
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Forest Products Journal | 1985 |
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Residues from the Sawmill . . . Making Smoke Or Profit
Failure to most profitably utilize residues may well determine the success or failure of a sawmilling enterprise. Many factors will influence the total percentage of residue that can be disposed […]
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Forest Products Journal | 1958 |
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Resin Application in Attrition-Mill Type Particle Board
Study was made of the effect on particle board properties of amount of resin, form of resin, and effect of adding resin before and after grinding. Another phase involved an […]
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Forest Products Journal | 1955 |
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Resin Distribution in Flakeboard Shown By Ultraviolet Light Photography
Color photomicrographs of particleboard cross sections by ultraviolet light give new important information on flake-to-flake bonding. The photographs, taken of cross sections of particleboards glued with resins containing a dye […]
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Forest Products Journal | 1968 |
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Resistance Moisture Meter Correction Factors for Western Softwood Species
Species correction factors for the standard Delmhorst resistance moisture meter were determined for the following species: Pinus monticola, Pinus contorta, Picea sitchensis, Picea glauca, Pseudotsuga menziesii (Mirb.) Franco, Pseudotsuga menziesii […]
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Forest Products Journal | 1972 |
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Resistance of Wood from Paraquat-Treated Southern Pines to Subterranean Termites, Decay Fungi, and Marine Borers
Untreated southern yellow pine in soil contact is notorious for its biodeterioration if some type of preventive steps are not taken. Sapwood of slash, longleaf, and loblolly pines cut from […]
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Forest Products Journal | 1979 |
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Resistance Strain Gages and Adhesives for Wood
A number of foil and wire strain gages along with nine different bonding adhesives were evaluated for their accuracy in strain measurement on sugar pine (Pinus lambertiana Douglas). In measuring […]
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Forest Products Journal | 1971 |
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Resistance to Cyclic Exposure At Extreme Low Temperature of Urea Resin Bonds
Douglas-fir boards were laminated with eight different urea-formaldehyde adhesives, and water-soaked specimens were exposed to cycles of 10? C or -60? to -70? C temperature treatments, followed by drying at […]
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Forest Products Journal | 1974 |
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Results of a Re-Logging Experiment in a Selectively Cut Mixed-Conifer Timber Stand
The Diamond Match Company conducted a study of their logging operations in northern California to determine the potential utilization of: 1) cull logs left in the woods; 2) trees that […]
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Forest Products Journal | 1957 |
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Reverse Proofloading of Lumber
The determination of the strength distribution of a given structural grade of lumber from any chosen mill is of growing concern to the lumber industry. Lumber in the lower range […]
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Forest Products Journal | 1982 |
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Revitalizing Through Modern Marketing
Over one-half the 1962 budget of the National Lumber Manufacturers Assoc. (2,000,000 dollars) is for technical promotion and investigations, the latter are carried out on: evaluation of floor systems, tests […]
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Forest Products Journal | 1961 |
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Risk and feasibility of processing small-diameter material in the U.S. West. Part I: Structural lumber
The reduction of stocking levels has been proposed as one part of a larger plan to restore western forests to sustainable ecological conditions and reduce fire hazard levels. Removal of […]
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Forest Products Journal | 2004 |
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Role of Density in the Erosion of Wood During Weathering
Samples from 12 hardwoods and 6 softwoods were artifically weathered. The rate of surface erosion was measured with a light microscope at exposure intervals of 600 hours. The results showed […]
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Forest Products Journal | 1986 |
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Roll Laminating Fiber Overlays on Low-Grade Ponderosa Pine–A Progress Report
Reports results of pilot plant tests with the roll-laminator to investigate the commercial feasibility of upgrading low-grade ponderosa pine lumber through the application of fiber overlays. The lower Common grades […]
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Forest Products Journal | 1970 |
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Rolling Shear Characteristics of Nine Structural Softwoods
Rolling shear properties were evaluated on a random sample of nine structural softwood species: Red, white, and black spruce; balsam fir; subalpine fir; Port-Orford cedar; western redcedar; sugar pine; and […]
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Forest Products Journal | 1976 |
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Rolling Shear Properties of Southern Pine Plywood and Undirectionally Laminated Veneer
Rolling shear stresses and deformations develop in certain structural members made either entirely or partially from structural plywood. Such structures may be box-beams, I-beams, gusset plates, and stressed-skin panels. Although […]
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Forest Products Journal | 1982 |