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Strength And Stiffness Of Reinforced Yellow Poplar Glued Laminated Beams
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Book Synopsis Strength and Stiffness of Reinforced Yellow-poplar Glued-laminated Beams by :
Download or read book Strength and Stiffness of Reinforced Yellow-poplar Glued-laminated Beams written by and published by . This book was released on 1997 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: In bridge applications, it is often necessary to minimize the depth of the bridge structure to provide for the required hydraulic opening or reduce the volume of approach fill. For bridges that utilize structural glued-laminated (glulam) timber beams as stringers, reinforcement using thin strips of pultruded E-glass-fiber-reinforced plastic (GFRP) composites may permit reduced depth, because the reinforcement has the potential to increase stiffness and strength. This study is part of an overall effort aimed at evaluating the potential for commercial production of glulam-GFRP beams in current wood laminating plants and a wood adhesive compatible with existing equipment. Twelve Yellow-Poplar glulam GFRP beams were commercially manufactured, and their performance was evaluated. The GFRP panels were bonded to the wood with a resorcinol formaldehyde adhesive to provide the reinforcement. The simplicity of the process used to manufacture the test beams indicates that the commercial production of glulam-GFRP beams is feasible. Increases of 18 percent in stiffness and 26 percent in strength were achieved by adding 3 percent of GFRP by volume. The bending strength values of the beams predicted by the ASTM D3737 procedure correlate well with the experimental values. However, the observed delamination of the reinforcement indicates that improved bonding strength of wood--GFRP interfaces is needed. Results of this study will be useful to manufacturers interested in improving the performance of glulam timber beams.
Download or read book Research Paper FPL-RP written by and published by . This book was released on 1986 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research Accomplishments for Wood Transportation Structures Based on a National Research Needs Assessment by : Michael A. Ritter
Download or read book Research Accomplishments for Wood Transportation Structures Based on a National Research Needs Assessment written by Michael A. Ritter and published by . This book was released on 1998 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Polymer Composites for Structural Applications in Construction by : L C Hollaway
Download or read book Advanced Polymer Composites for Structural Applications in Construction written by L C Hollaway and published by Elsevier. This book was released on 2004-04-22 with total page 785 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past three decades advanced polymer composites have emerged as an attractive construction material for new structures and the strengthening/rehabilitation of existing buildings and bridges. The techniques associated with the technology, analysis and design of polymer composites in construction are continually being researched and the progress made with this exciting material will continue at an ever- increasing rate to meet the demands of the construction industry. This volume of proceedings is from the Second ACIC 2004 International Conference, which focused on the application and further exploitation of advanced composites in construction. The conference allowed practising engineers, asset managers, researchers and representative of regulatory bodies to promote the active exchange of scientific and technical information on the rapidly changing scene of advanced composites in construction. This volume focuses on the presentation of new concepts, techniques and case studies, which will lead to greater exploitation of advanced polymer composites and FRP materials for civil engineering infrastructure, rehabilitation and renewal. Presents new concepts, techniques and case studies
Download or read book Dividends from Wood Research written by and published by . This book was released on 1997 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Efficient Utilization of Red Maple Lumber in Glued-laminated Timber Beams by : John J. Janowiak
Download or read book Efficient Utilization of Red Maple Lumber in Glued-laminated Timber Beams written by John J. Janowiak and published by . This book was released on 1995 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: The feasibility of utilizing cant-sawn hardwood lumber, which would not usually be desired for furniture manufacture, was studied for the manufacture of structural glued-laminated (glulam) timber. Two red maple beam combinations were evaluated: (1) a glulam combination designed with E-rated lumber in 25 percent of the outer laminations (top and bottom) and No. 3 grade lumber in 50 percent of the center laminations and (2) a wide-width glulam combination with laminations made from nominal 2- by 4- and 2- by 6-in. No. 2 grade lumber laid edge-to-edge having staggered end joints (termed 2 by 4/2 by 6 glulam combination). Test results of 42 red maple glulam beams showed that it was feasible to develop structural glulam timber from cant-sawn lumber. The glulam combinations made from E-rated lumber exceeded the target design bending stress of 2,400 lb/in2 and met the target modulus of elasticity (MOE) of 1.8 Ã 106 lb/in2. In addition, the 2 by 4/2 by 6 glulam combination exceeded published design stresses for vertically laminated bending strength, MOE in both the horizontally and vertically laminated orientations, and horizontal shear stress in the vertically laminated orientation. Based on the results of the 2 by 4/2 by 6 glulam combination, it was determined that edge gluing the laminations to form wide-width lumber is not required to achieve targeted strength and stiffness levels. Data analysis showed that ASTM D3737 procedures developed for softwood species accurately predict beam stiffness and provide conservative bending and horizontal shear strength estimates for red maple glulam beams. Also, it was shown that results from ASTM D143 shear-block tests could be used to accurately predict horizontal shear strength of 2 by 4 and 2 by 6 red maple glulam beams.
Author :FIB – International Federation for Structural Concrete Publisher :FIB - Féd. Int. du Béton ISBN 13 :9634205607 Total Pages :614 pages Book Rating :4.6/5 (342 download)
Book Synopsis 2nd International PhD Symposium in Budapest Hungary by : FIB – International Federation for Structural Concrete
Download or read book 2nd International PhD Symposium in Budapest Hungary written by FIB – International Federation for Structural Concrete and published by FIB - Féd. Int. du Béton. This book was released on 1998-08-01 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Adhesive Technology, Revised and Expanded by : Antonio Pizzi
Download or read book Handbook of Adhesive Technology, Revised and Expanded written by Antonio Pizzi and published by CRC Press. This book was released on 2003-08-06 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Adhesive Technology, Second Edition exceeds the ambition of its bestselling forerunner by reexamining the mechanisms driving adhesion, categories of adhesives, techniques for bond formation and evaluation, and major industrial applications. Integrating modern technological innovations into adhesive preparation and application, this greatly expanded and updated edition comprises a total of 26 different adhesive groupings, including three new classes. The second edition features ten new chapters, a 40-page list of resources on adhesives, and abundant figures, tables, equations.
Book Synopsis SPI/CI International Conference and Exposition 1998 by : Technomic
Download or read book SPI/CI International Conference and Exposition 1998 written by Technomic and published by CRC Press. This book was released on 2022-01-26 with total page 839 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses how the excess value, of the products using braid, is captured in prosthetic limbs, aircraft and automotive components, commercial furniture, and trenchless sewer repair structures. It outlines the braided pultrusion process and also discusses impregnation states.
Book Synopsis Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 by : Scott Walbridge
Download or read book Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021 written by Scott Walbridge and published by Springer Nature. This book was released on 2022-05-23 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises the proceedings of the Annual Conference of the Canadian Society of Civil Engineering 2021. The contents of this volume focus on specialty conferences in construction, environmental, hydrotechnical, materials, structures, transportation engineering, etc. This volume will prove a valuable resource for those in academia and industry.
Book Synopsis Adaptive Structures, Eighth Japan/US Conference Proceedings by : Golam M. Newaz
Download or read book Adaptive Structures, Eighth Japan/US Conference Proceedings written by Golam M. Newaz and published by CRC Press. This book was released on 2019-11-28 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1998. A collection of papers presented at the Proceedings of the Eighth Japan-U.S. Conference On Composite Materials, SEPTEMBER 24 to 25 , 1998. The conference is organized by Wayne State University and American Society for Composites in cooperation with U.S. Organizing Committee and the Japanese Organizing Committee. Since the Seventh Meeting in Kyoto in 1995, this meeting brings together accomplished composite researchers between the two countries to share latest developments and advances in the field. The scope of the current conference ranges over all aspects of composite materials with some emphasis on infrastructure applications of composites. Key areas in composites are covered by 110 papers with 35 presentations from Japan.
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1998 with total page 888 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Composites in the Transportation Industry by : Sri Bandyopadhyay
Download or read book Composites in the Transportation Industry written by Sri Bandyopadhyay and published by Destech Publications. This book was released on 2000 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Yellow Poplar Glulam Timber Beam Performance by :
Download or read book Yellow Poplar Glulam Timber Beam Performance written by and published by . This book was released on 1993 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strength Validation and Fire Endurance of Glued-laminated Timber Beams by : Erwin L. Schaffer
Download or read book Strength Validation and Fire Endurance of Glued-laminated Timber Beams written by Erwin L. Schaffer and published by . This book was released on 1986 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: A previous paper presented a reliability-based model to predict the strength of glued-laminated timber beams at both room temperature and during fire exposure. This Monte Carlo simulation procedure generates strength and fire endurance (time-to-failure, TTF) data for glued-laminated beams that allow assessment of mean strength and TTF as well as their variability. This paper reports an effort to validate model predictive capability through an independently fabricated set of 21 glued-laminated beams. Based upon the available data for the model input parameters on lumber strength and stiffness, finger-joint strength, and length of laminating lumber between sequential finger joints, the model of beam strength appears acceptable and possibly slightly conservative. Refinements in the beam strength model allow its use for predicting fire endurance. In this case, the fire endurance is measured by the TTF and is defined as the time the beam will support its design load while subjected to fire. The residual strength of the beam is analytically calculated by removing the char layer, plus a finite thickness of weakened wood, from the beam cross section as fire exposure time increases. Employing the input parameters for values of finger-joint strength and lamination grades of Douglas-fir, the fire endurance TTF was analyzed for a 5.12- by 16.50-inch 11-lamination Douglas Fir-Larch beam (24F-V4) carrying full allowable uniform load (47.7 lb/in.). (Three-sided fire exposure was assumed; however, four-sided exposure can also be accommodated.) A simulated random fabrication and analysis of the TTF under fire exposure for 100 beams was performed. The mean TTF was estimated as 35.2 minutes with a coefficient of variation of 13.7 percent. Lateral torsional buckling was never the cause of failure in any of the simulations. The results compared well (within a 65 pct confidence band) with the observations and predictions for timber beams reported by sources in other countries. A simulation for a single glulam beam test in cooperation with the National Forest Products Association was also conducted which predicted the result exactly.
Book Synopsis Canadian Journal of Civil Engineering by :
Download or read book Canadian Journal of Civil Engineering written by and published by . This book was released on 2004 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Strength and Stiffness of Small Glued-laminated Beams with Different Qualities of Tension Laminations by : Catherine M. Marx
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:
