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Strength Validation And Fire Endurance Of Glued Laminated Timber Beams
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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 Reliability Formulation for the Strength and Fire Endurance of Glued-laminated Beams by :
Download or read book Reliability Formulation for the Strength and Fire Endurance of Glued-laminated Beams written by and published by . This book was released on 1985 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A model was developed for predicting the statistical distribution of glued-laminated beam strength and stiffness under normal temperature conditions using available long span modulus of elasticity data, end joint tension test data, and tensile strength data for laminating-grade lumber. The beam strength model predictions compared favorably with test data for glued-laminated beam strength data with 8 and 10 laminations; however, the model predicted strength values 30 percent higher for glued-laminated beam strength data with 4 laminations. Fire endurance and structural resistance were evaluated by artificially reducing the cross section. This reduction accounts for char depth as well as for reduced wood strength caused by the elevated temperature. Average time-to-failure predictions using the developed model compared well with those from conventional prediction methods.
Book Synopsis Long-term Load Performance of Hardboard I-beams by : J. Dobbin McNatt
Download or read book Long-term Load Performance of Hardboard I-beams written by J. Dobbin McNatt and published by . This book was released on 1983 with total page 688 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 1985 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fiber Stress Values for Design of Glulam Timber Utility Structures by : Roland Hernandez
Download or read book Fiber Stress Values for Design of Glulam Timber Utility Structures written by Roland Hernandez and published by . This book was released on 1995 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis PELPS III, a Microcomputer Price Endogenous Linear Programming System for Economic Modeling by : Dali Zhang
Download or read book PELPS III, a Microcomputer Price Endogenous Linear Programming System for Economic Modeling written by Dali Zhang and published by . This book was released on 1993 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research Paper FPL-RP written by and published by . This book was released on 1986 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 14th International Probabilistic Workshop by : Robby Caspeele
Download or read book 14th International Probabilistic Workshop written by Robby Caspeele and published by Springer. This book was released on 2016-11-20 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the 14th International Probabilistic Workshop that was held in Ghent, Belgium in December 2016. Probabilistic methods are currently of crucial importance for research and developments in the field of engineering, which face challenges presented by new materials and technologies and rapidly changing societal needs and values. Contemporary needs related to, for example, performance-based design, service-life design, life-cycle analysis, product optimization, assessment of existing structures and structural robustness give rise to new developments as well as accurate and practically applicable probabilistic and statistical engineering methods to support these developments. These proceedings are a valuable resource for anyone interested in contemporary developments in the field of probabilistic engineering applications.
Download or read book General Technical Report WO. written by and published by . This book was released on 1975 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Protecting and Enhancing America's Forests and Rangelands by :
Download or read book Protecting and Enhancing America's Forests and Rangelands written by and published by . This book was released on 1987 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fire Endurance Model for a Metal-plate-connected Wood Truss by : Robert H. White
Download or read book Fire Endurance Model for a Metal-plate-connected Wood Truss written by Robert H. White and published by . This book was released on 1993 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermal Degradation of Fire-retardant-treated Plywood by :
Download or read book Thermal Degradation of Fire-retardant-treated Plywood written by and published by . This book was released on 1991 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structural Design for Fire Safety by : Andrew H. Buchanan
Download or read book Structural Design for Fire Safety written by Andrew H. Buchanan and published by John Wiley & Sons. This book was released on 2017-01-30 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural Design for Fire Safety, 2nd edition Andrew H. Buchanan, University of Canterbury, New Zealand Anthony K. Abu, University of Canterbury, New Zealand A practical and informative guide to structural fire engineering This book presents a comprehensive overview of structural fire engineering. An update on the first edition, the book describes new developments in the past ten years, including advanced calculation methods and computer programs. Further additions include: calculation methods for membrane action in floor slabs exposed to fires; a chapter on composite steel-concrete construction; and case studies of structural collapses. The book begins with an introduction to fire safety in buildings, from fire growth and development to the devastating effects of severe fires on large building structures. Methods of calculating fire severity and fire resistance are then described in detail, together with both simple and advanced methods for assessing and designing for structural fire safety in buildings constructed from structural steel, reinforced concrete, or structural timber. Structural Design for Fire Safety, 2nd edition bridges the information gap between fire safety engineers, structural engineers and building officials, and it will be useful for many others including architects, code writers, building designers, and firefighters. Key features: • Updated references to current research, as well as new end-of-chapter questions and worked examples. •Authors experienced in teaching, researching, and applying structural fire engineering in real buildings. • A focus on basic principles rather than specific building code requirements, for an international audience. An essential guide for structural engineers who wish to improve their understanding of buildings exposed to severe fires and an ideal textbook for introductory or advanced courses in structural fire engineering.
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1987 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1970 with total page 2140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States-Japan Cooperative Program in Natural Resources. Panel on Wind and Seismic Effects. Joint Meeting Publisher : ISBN 13 : Total Pages :624 pages Book Rating :4.:/5 (318 download)
Book Synopsis Wind and Seismic Effects by : United States-Japan Cooperative Program in Natural Resources. Panel on Wind and Seismic Effects. Joint Meeting
Download or read book Wind and Seismic Effects written by United States-Japan Cooperative Program in Natural Resources. Panel on Wind and Seismic Effects. Joint Meeting and published by . This book was released on 1992 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structural Fire Design by : Erwin L. Schaffer
Download or read book Structural Fire Design written by Erwin L. Schaffer and published by . This book was released on 1984 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analytical procedures to predict the fire endurance of structural wood members have been developed worldwide. This research is reviewed for capability to predict the results of tests in North America and what considerations are necessary to apply the information here. Critical research needs suggested include: (1) Investigation of load levels used in reported tests, and parameters in analyses, for application to North American practice; (2) the effect of lumber grade on wood property response at elevated temperature; and (3) further effort in reliability-based design procedures so that the safety of fire-exposed members and assemblies may be determined.
