Download or read book Relationship of Tensile Strength of Southern Pine Dimension Lumber to Inherent Characteristics written by C. C. Gerhards and published by . This book was released on 1972 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Relationship of Tensile Strength of Southern Pine Dimension Lumber to Inherent Characteristics written by C. C. Gerhards and published by . This book was released on 1972 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several relationships between tensile strength and some lumber characteristics that can be measured nondestructively are evaluated. From 72 to 83 percent of the variation in tensile strength of several hundred southern pine 2- by 4- and 2- by 8-inch specimens was accounted for by various linear combinations of strength ratio of knots, stiffness, slope of grain, and specific gravity. Strength ratio of knots and stiffness were the most significant variables. Evaluated in conjunction with other variables, stiffness measured over a 4-foot span improved the coefficient of determination of 2 by 4's by about 0.05 compared to stiffness measured over a 15-foot span; three methods to determine strength ratio of knots gave coefficients of determination that differed by a maximum of 0.08. A method for estimating lower 5 percent exclusion values for tensile strength is also presented. (Author).
Download or read book Relationship of Tensile Strength of Southern Pine Dimension Lumber to Inherent Characterisics written by C. C. Gerhards and published by . This book was released on 1972 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Strength and Stiffness of Small Glued laminated Beams with Different Qualities of Tension Laminations written by Catherine M. Marx and published by . This book was released on 1981 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S D A Forest Service Research Paper FPL written by and published by . This book was released on 1968 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wood Anatomy of the Neotropical Sapotaceae written by Bohumil Francis Kukachka and published by . This book was released on 1978 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Paper FPL written by and published by . This book was released on 1979 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Influence of Moisture Content on the Flexural Properties of Southern Pine Dimension Lumber written by T. E. McLain and published by . This book was released on 1984 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Accomplishments written by and published by . This book was released on 1974 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Formation and Properties of Juvenile Wood in Southern Pines written by and published by . This book was released on 2001 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: To satisfy the increasing demand for forest products, much of the future timber supply will be from improved trees grown on managed plantations. This fast-grown resource will tend to be harvested in short age rotations and will contain higher proportions of juvenile wood than that of current harvests. In anticipation of this resource, definitive information is needed on the influence of juvenile wood on lumber properties so that grading rules and the associated allowable design stresses can be modified as needed. This document reports the results of an extensive review of the literature on juvenile wood in southern pines. This report defines and discusses the extent, occurrence, and characteristics of juvenile wood. It reviews the effects that environment and silviculture have on the amount of juvenile wood produced. Finally, the impacts that juvenile wood has on mechanical properties were quantified. The results of this quantification are significant to all producers of fast-grown plantations. Research has clearly shown that juvenile wood will have a detrimental impact on allowable design stresses for visually graded lumber. It is critical that methods are developed to more carefully manage fast-grown plantation wood for its most efficient use. This review should serve as an overall collection of knowledge pertaining to juvenile wood research in southern pines and should help in the decision-making efforts to improve seedling selection techniques and silvicultural practices to maximize the potential for fast-grown plantations of southern pines.
Download or read book Tension Parallel to grain Properties of Southern Pine Dimension Lumber written by D. V. Doyle and published by . This book was released on 1967 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Study provides an appraisal of tensile properties of present structural grades and sizes of southern pine 2-inch dimension lumber; provides a means of evaluating presently assigned working stresses; and includes pertinent data on appraisal of the possibilities and limitations of lumber grading based on a stiffness evaluation. (Author).
Download or read book Forest Service Research Accomplishments written by and published by . This book was released on 1973 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiple Knot Failure Mechanisms in Structural Lumber written by Yupu Shi and published by . This book was released on 1996 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wood and Fiber Science written by and published by . This book was released on 1991 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wood Industry Abstracts written by and published by . This book was released on 1972 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forest Products Journal written by and published by . This book was released on 1988 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements written by and published by . This book was released on 1972 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
