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| Title | Publication | Publish Year |
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Potential reductions in plywood manufacturing costs resulting from improved technology
Recent technology improvements in plywood manufacturing processes are described. The potential impact of these improvements on manufacturing costs and output capacity of a plywood mill was examined by a series […]
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Forest Products Journal | 1989 |
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Potential Sources of Wood Fiber in the Northeast
Industry is constantly searching for additional inexpensive sources of wood fiber. As the technology of harvesting, transporting, and converting timber products advances, new sources of raw material become economically available. […]
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Forest Products Journal | 1976 |
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Potential Structural Quality of Trenching Lumber
The structural quality of lumber used for trenching was examined at sites in the Washington, D.C., Houston, Texas, and Los Angeles, California areas as part of a study undertaken by […]
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Forest Products Journal | 1981 |
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Pre-Pressing Plywood Assemblies
Production rate increase of 10 to 15 percent, gluing cost reduction up to 10 percent, and increased veneer from 95 percent less grade rejects and a few percent reduction in […]
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Forest Products Journal | 1961 |
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Pre-twisting during sawing results in straight studs
Warp in lumber is a serious problem for the building industry. In particular, material from small-diameter logs experiences excessive twist. This paper presents a new sawing technique to minimize the […]
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Forest Products Journal | 2006 |
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Predicting flexural properties of dimension lumber from 40-year-old loblolly pine plantation stands
The predictive value of specific gravity (SG), rings per inch, and percent of latewood in relation to the flexural properties (modulus of rupture [MOR] and modulus of elasticity [MOE]) of […]
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Forest Products Journal | 2004 |
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Predicting internal lumber grade from log surface knots: actual and simulated results
The purpose of this study was threefold: 1) compare actual with simulated lumber yields; 2) examine the effect of measurement errors associated with knot angles and morphology, on lumber grade; […]
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Forest Products Journal | 2005 |
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Predicting localized MOE and tensile strength in solid and finger-jointed laminating lumber using longitudinal stress waves
A stress wave technique was examined as a means of predicting localized (2-ft.) modulus of elasticity (MOE) and tensile strength for several grades and species groupings of solid and finger-jointed […]
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Forest Products Journal | 1990 |
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Predicting lumber volume and grade recovery from Scots pine stems using tree models and sawmill conversion simulation
Through application of tree models, stem shape and internal knot structure of Scots pine stems could be predicted using site, stand, and tree variables. Stem shape was described by stem […]
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Forest Products Journal | 2006 |
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Predicting Product Recovery in Southern Pine Using Dendrometry and STX
The STX system makes it possible to estimate the yield of a tract of timber for any product–lumber, sawdust, chips, veneer, newsprint, etc.–or any mix of products. The system consists […]
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Forest Products Journal | 1974 |
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Predicting Rolling Shear Modulus of Plywood
Rolling shear stress may develop in some structural applications, such as box-beams, I-beams, gusset plates, and stressed-skin panels. Determination of plywood rolling shear modulus is a very time-consuming process. Based […]
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Forest Products Journal | 1979 |
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Predicting the Bending Strength of Ladder Rail Stock
Ladders are a high liability product. Nondestructive testing of ladder rail strength could be used to sort the rails into different quality groups for improved reliability. Two hundred pieces of […]
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Forest Products Journal | 1983 |
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Predicting the strength of sawn wood products: a comparison between x-ray scanning of logs and machine strength grading of lumber
For a long time, process improvements in sawmills have focused on high productivity measured in volume per hour and volume recovery. As sawmills become increasingly efficient, the importance of focusing […]
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Forest Products Journal | 2005 |
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Predicting Veneer Grade Yields for Loblolly and Slash Pine Trees
Veneer yields are presented for 117 loblolly and 73 slash pine trees sampled at 5 locations and processed at 3 mills. Fifty-four percent of loblolly, and 55 percent of slash […]
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Forest Products Journal | 1979 |
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Prediction of Plywood Bond Durability
A brief description is given, and reference is made to a detailed description of research which was established to demonstrate the feasibility of developing a method for predicting the service […]
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Forest Products Journal | 1960 |
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Preharvest Drying of Logging Residues
Logging residues are being utilized or being considered for fuel throughout the United States. Their use will increase substantially as oil, coal, and natural gas costs rise. To make logging […]
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Forest Products Journal | 1981 |
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Preliminary Observations . . . Microscale Changes in Cell Structure At Softwood Surfaces During Weathering
When weathering checks occur within a tracheid wall, the long axis of the checks is diagonal to the long axis of the tracheid, and the checks are believed to follow […]
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Forest Products Journal | 1964 |
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Preliminary Report on a Proposed New Method of Estimating the Service Life of Exterior Grade Plywood
A test is being made of a proposed new method of estimating the service life of plywood. It is based upon the rate of reduction in strength of a bond […]
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Forest Products Journal | 1956 |
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Preliminary Study of Proportional Limit as a Predictor of Ultimate Strength in Bending
Machine grading of structural lumber in the United States combines visual indicators and modulus of elasticity (MOE), determined from load-deflection measurements made by machine, as predictors of strength. The machine-based […]
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Forest Products Journal | 1980 |
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Preparation and Testing of Microbending Specimens
Very small bending specimens have proven to be useful in evaluating certain aspects of wood strength in wood quality studies and in products where sufficient material is unavailable for standard-size […]
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Forest Products Journal | 1986 |
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Preservative Moisture-Repellent Treatments for Wooden Packing Boxes
In a test of the effectiveness of dip treatment of wooden packing boxes, 3,000 M22 small arms ammunition shipping boxes, made primarily from eastern white pine, but including some aspen, […]
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Forest Products Journal | 1959 |
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Preservative Treatment of Northern Post Species
A study of the use of 10 percent pentachlorophenol in grease applied to Michigan woods was part of a research project investigating groundline treatment of posts. Investigated variables included species–northern […]
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Forest Products Journal | 1962 |
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Press Drying Nine Species of Wood
Press drying was used on eight hardwoods and one softwood to explore the potential of this drying method in utilizing low-grade logs for products such as paneling and pallets. The […]
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Forest Products Journal | 1968 |
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Press-Dried Paneling Shows Promise
Researchers at. the U. S. Forest Products Laboratory, Madison, Wis., have developed a lumber paneling which can be press-dried from the green condition in approximately 1 hour. The boards attain […]
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Forest Products Journal | 1966 |
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Press-drying plantation loblolly pine lumber to reduce warp losses: economic sensitivity analysis
Several studies have suggested that press-drying, as an alternative to high-temperature kiln-drying, is effective in reducing warp and grade loss from warp in dimension lumber cut from plantation-grown loblolly pine […]
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Forest Products Journal | 1992 |