Download or read book Nonlinear Modeling of Creep in Metal Plate Connected Wood Trusses written by Edward J. Sippel and published by . This book was released on 2013 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fire Endurance Modeling of Metal plate Connected Wood Trusses written by Deepak Kumar Shrestha and published by . This book was released on 1992 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineered Bamboo Structures written by Yan Xiao and published by CRC Press. This book was released on 2022-04-29 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bamboo is in the spotlight as a potential building material in the current pursuit of a CO2-neutral society, due to its rapid maturation and excellent mechanical properties. Despite the growing interest in bamboo in academia and society, there is a lack of systematic understanding of the fabrication, design and construction processes using bamboo as a modern industrial material. This is the first book to describe a new category of structural systems constructed with engineered bamboo. It gives a definition of engineered bamboo (glubam) in an analogy with steel structures and wood structures. Structural systems and components have been designed using glubam; then industrialized production processes of glubam are described. Based on state-of-the-art research, design guidelines are suggested, in a comparable and parallel approach to the existing guidelines for composite wood structures. The book also discusses bamboo structures in the context of sustainable development, including the benefits of using bamboo as an alternative or replacement for wood, especially for developing countries, many of which are faced with the lack or destruction of forest resources.

Download or read book Experimental Verification and Nonlinear Modeling of Truss plate Joints by Runge Kutta Numerical Technique written by Leslie Groom and published by . This book was released on 1988 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growing use of light-frame wood trusses in the residential and commercial construction has generated the need for general analysis procedures for predicting deformations and ultimate load of truss-plate joints, which are the basis for accurate evaluation of structural performance and design of complete truss assemblies. This dissertation was aimed at developing such a model. The developed model incorporates mechanisms of load transfer from one wood member through the truss plate and into another wood member and predicts the load-deflection trace and ultimate load. It treats plate teeth as beams on elastic foundation and applies Runge-Kutta numerical analysis to solve the governing differential equations. The nonlinear response of the foundation is accounted for by a linear step-by-step procedure. Additional theoretical investigation consisted of using an existing program to perform finite element analysis of plate joints to determine the interaction of plate teeth arranged in columns or in rows. This analysis showed some interaction among teeth in columns and none among teeth in rows. To develop data for model verification, tests were performed on joints made of Douglas-fir lumber and 20-gauge truss plates with die-punched teeth -for various grain and plate orientations. Foundation moduli of test joints were obtained by embedment testing under compression loads. Comparisons between theoretical and experimental load-deflection traces show acceptable agreement. Ultimate load was accurately predicted for specimens which failed as a result of tooth withdrawal, but not for either plate failure or wood failure perpendicular-to-grain, neither of which was included in the model. Possible future model improvements should consist of incorporating these two failure modes and a mechanism associated with moment transfer through plate joints.

Download or read book Metal plate connected Wood Joints written by Rākeśagupta and published by . This book was released on 1996 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This publication has presented an overview of current research on MPC joints in wood trusses. The literature search was primarily of U.S. sources, with some effort to obtain literature from other parts of the world. An enormous amount of important information has been amassed by studies on testing procedures and theoretical models. Among the many attributes that must be considered in modeling and analysis of joints and trusses are the effect of load angle, wood-plate orientation, size, thickness, stiffness of steel plates, and specific gravity of wood on the strength of the joints, as well as the effect of the gap closure between members, tooth damage or length, and tooth layout on the overall joint performance. Extensive research has been done on tension joints in trusses; some has been done on heel connections, but very little has been done on web and other connections. Researchers have devoted considerable effort to understanding tensile joints under axial loading. However, experience suggests that even tensile joints are subjected to combined loadings because of eccentricities. The behavior of a simple MPC joint is very complex and influenced by many variables, including plate properties, joint geometry, and the natural variability of wood. An integrated approach, as used by Foschi (1977), that considers the material behavior and interactions of wood and plate and that is simple but sufficiently accurate for designing joints should be developed. A standard method for studying the long-term behavior of MPC joints should be developed and used in design. One possible option would be to use a time-temperature superposition principle for developing long-term data from relatively short-term tests. Failure modes of the truss joints should be characterized. Work on dynamic behavior and environmental effects on the joints is also needed."--Summary and conclusions.

Download or read book Three dimensional Non linear Modeling of Metal plate connected Truss Assembles Under Various Bracing Configurations written by Daniel R. Hawk and published by . This book was released on 2011 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book System Effects in Metal Plate Connected Wood Truss Assemblies written by John M. Drozdek and published by . This book was released on 1999 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparison of Modeling in Metal plate connected Wood Roof Trusses written by William Moorhead and published by . This book was released on 2008 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several editions of a national standard for metal-plate-connected wood truss design have been issued in the United States going back to 1960. However the current standard does not include language to precisely define how the heel joint region of a roof truss should be modeled in analysis to predict truss performance. The Canadian national standard for trusses does include provisions for the heel joint analog. This study compares results from trusses modeled under three different heel joint analogs, and includes the results from proprietary analysis and design software title. Certain truss types are reported to have much lower combined stresses in the first top chord panel adjacent to the heel joint when the Canadian provisions are used. Truss deflections are not appreciably affected by the various analogs compared. It is common that stresses in the first top chord panel adjacent to the heel joint are most influential in determining required chord grade, and the lower stress levels in the Canadian variations suggest that using the Canadian analog could provide designs with generally lower lumber grade requirements, and hence more economical trusses.

Download or read book Small Scale Modeling of Metal Plate Connected Wood Truss Joints written by R. Gupta and published by . This book was released on 2005 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research was to develop 1/3-scale models of full-size (prototype) metal-plate-connected wood truss joints and a complete truss using similitude theory. To verify material properties, we compared moduli of elasticity of prototype and 1/3-scale model boards. Although the variation in stiffness of the model was greater than that of the prototype, the average properties of the model and prototype were similar. The resulting average design stiffness of 1/3-scale tension splice joints was within 1 % of the prototype joint stiffness, while the ultimate load was 7 % lower than the prototype. Stiffness and strength of model heel joints were within 22 % and 17 %, respectively, of the stiffness and strength of their prototypes. Finally, ten complete model trusses were fabricated and tested; their average stiffness and strength were 780 N/mm and 17.3 kN, respectively, after scaling up by similitude. Modeling full-size truss connection behavior up to the design load, and possibly to failure, with small-scale models and similitude theory may be feasible.

Download or read book Three dimensional Modeling of Metal Plate Connected Wood Truss Joints written by Xiaoqin Liu and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dividends from Wood Research written by and published by . This book was released on 1985 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Practical Method to Analyze the System Effects of a Metal plate connected Wood Truss Assembly written by Da-Ren Dung and published by . This book was released on 1999 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study presents a practical method to model an actual Metal-Plate- Connected (MPC) roof truss assembly using a commercial program, SAP2000, to investigate its system performance. Truss assembly modeling was examined because the conventional single truss design method ignores system effects, such as variability of modulus of elasticity (MOE), interaction of sub-assemblies, realistic boundary conditions, etc. Two types of semi-rigid MPC joint models, linear spring (LS) joint model and a truss plate manufacturer's (TPM's) joint model, were used for the truss and truss assembly models. To verify the truss models using the LS joint model, the predicted deflections of individual trusses and the load sharing of nine-truss roof assembly models were compared with experimental results from the literature. Fourteen individual trusses (the components of the actual roof truss assembly) using TPM's joint models were also verified by comparing the Combined Stress Index (CSI) values with the CSI values provided by the TPM. Both design and one set of random material properties were used in the analysis of the actual roof truss assembly model. The predictions for truss models using the LS joint model for truss deflections and load sharing effect agree with the experimental results. The CSI values for individual trusses with the TPM's joint model matched the CSI values provided by the TPM. The load distribution in an actual roof truss assembly is strongly influenced by the interaction of sub-assemblies and by the boundary conditions. In the truss assembly, the prediction of location and value of maximum CSI are different from those for the single truss. The truss with the maximum CSI value of 0.91 among fourteen individual truss types decreased to 0.52 and 0.51 when this truss is in the assembly with design and random material properties, respectively. Moreover, the truss with a maximum CSI of 1.03 in the assembly (with design properties) had a CSI value of only 0.95 as an individual truss. Although the CSI of one truss type increased over 1.0 in the assembly, the CSI of most other trusses decreased (by as much as 43%). So, the behavior of a single truss is different when the truss is in the assembly. The benefits of using an assembly model compared to the conventional truss design method are in providing increased safety through improved analysis and in a potential reduction in construction cost.

Download or read book National Conference on Wood Transportation Structures written by and published by . This book was released on 1996 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Contribution written by and published by . This book was released on 1993 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions of the American Society of Civil Engineers written by American Society of Civil Engineers and published by . This book was released on 2001 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 29-30 contain papers of the International Engineering Congress, Chicago, 1893; v. 54, pts. A-F, papers of the International Engineering Congress, St. Louis, 1904.

Download or read book Forest Products Journal written by and published by . This book was released on 1992 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1992 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt: