Materials and Joints in Timber Structures


Book Description

This book contains the contributions from the RILEM International Symposium on Materials and Joints in Timber Structures that was held in Stuttgart, Germany from October 8 to 10, 2013. It covers recent developments in the materials and the joints used in modern timber structures. Regarding basic wooden materials, the contributions highlight the widened spectrum of products comprising cross-laminated timber, glulam and LVL from hardwoods and block glued elements. Timber concrete compounds, cement bonded wood composites and innovative light-weight constructions represent increasingly employed alternatives for floors, bridges and facades. With regard to jointing technologies, considerable advances in both mechanical connections and glued joints are presented. Self-tapping screws have created unprecedented options for reliable, strong as well as ductile joints and reinforcement technologies. Regarding adhesives, which constitute the basis of the jointing/laminating technology of modern timber products, extended options for tailor-made bonding solutions have to be stated. Apart from melamine-urea and phenolic-resorcinol adhesives, one-component-polyurethanes, emulsion isocyanate polymers and epoxies offer a wide range of possibilities. The contributions dealing with experimental and numerical investigations on static, cyclic and seismic behavior of structures clearly reveal the enhanced potential of modern timber construction for reliable and sustainable buildings and bridges of the new millennium. The book is structured in nine thematic areas, being I) Structures II) Mechanical Connections III) Glued Joints and Adhesives IV) Timber and Concrete/Cement/Polymer Composites V) Cyclic, Seismic Behavior VI) Hardwood, Modified Wood and Bamboo VII) Cross-Laminated Timber VIII) Properties and Testing of Wood IX) Glulam




Heavy Timber Structures


Book Description

In the triumvirate of dominant structural building materials--wood,metal, and masonry--each has its advantages, but none are as intertwinedwith the human spirit as wood. Thirty-five public buildings illustrate how heavy timber framing can address familiar programmatic issues such as structure, economics, aesthetics, and sustainability. Timber framing can also have a positive effect on human emotions and physiology. In addition to being warm to the touch, wood building interiors have been widely proven to reduce blood pressure and heart rate and to speed convalescence in health care facilities. More than 450 photos, plans, and diagrams show how wood framing components from solid timbers to glulams and peeled logs are designed for durability and expressiveness. The finished projects aptly demonstrate what it means not only to shape buildings, but how they shape us.




Advanced Timber Structures


Book Description

Wood is usually perceived as a "traditional" material. However, the properties of this material have now for some time made it possible to design free shapes and highly complex structures. Today, the wood laboratory of the EPF Lausanne, which was originally founded by Julius Natterer, is testing the production of origami structures, ribbed shells, fabric structures and curved panels under the guidance of Professor Weinand using digital calculation and computer-aided processing methods. The research results are tested in prototypes, which demonstrate the potential applications in large-scale timber buildings. By exploring the hitherto unused potential of wood as a construction material, this book provides an exciting and inspiring outlook on a new generation of timber buildings.







Design of Integrally-Attached Timber Plate Structures


Book Description

Design of Integrally-Attached Timber Plate Structures outlines a new design methodology for digitally fabricated spatial timber plate structures, presented with examples from recent construction projects. It proposes an innovative and sustainable design methodology, algorithmic geometry processing, structural optimization, and digital fabrication; technology transfer and construction are formulated and widely discussed. The methodology relies on integral mechanical attachment whereby the connection between timber plates is established solely through geometric manipulation, without additional connectors, such as nails, screws, dowels, adhesives, or welding. The transdisciplinary design framework for spatial timber plate structures brings together digital architecture, computer science, and structural engineering, covering parametric modeling and architectural computational design, geometry exploration, the digital fabrication assembly of engineered timber panels, numerical simulations, mechanical characterization, design optimization, and performance improvement. The method is demonstrated through different prototypes, physical models, and three build examples, focusing specifically on the design of the timber-plate roof structure of 23 large span arches called the Annen Headquarters in Luxembourg. This is useful for the architecture, engineering, and construction (AEC) sector and shows how new structural optimization processes can be reinvented through geometrical adaptions to control global and local geometries of complex structures. This text is ideal for structural engineering professionals and architects in both industry and academia, and construction companies.




Timber Frame Construction


Book Description

Discover the satisfaction of making your own durable, economical, and environmentally friendly timber frame structures. Covering all aspects of timber frame construction, this practical guide is filled with easy-to-understand instructions, clear illustrations, and helpful photographs. With expert advice on selecting appropriate timber, necessary tools, safety considerations, joinery techniques, assembly, and raising, Jack Sobon and Roger Schroeder encourage beginners by offering complete plans for a small toolshed. Turn your dream of a timber frame house into a reality.




Reinforcement of Timber Elements in Existing Structures


Book Description

By presenting the work of the RILEM Technical Committee 245-RTE, the book provides an overview of the existing techniques for the reinforcement of timber elements, joints and structures. It consists of two parts: part I examines state-of-the-art information on reinforcement techniques, summarizes the current status of standardization, and covers STS, GiR, FRP and nanotechnology. In part II several applications of reinforcement are discussed: these include traditional structures, traditional timber frame walls, light-frame shear walls, roofs, floors, and carpentry joints. The book will benefit academics, practitioners, industry and standardization committees interested in the reinforcement of existing timber elements, joints and structures.




Systems in Timber Engineering


Book Description

An indispensable standard work for everyone involved in building with wood. This work uses plans, schematic drawings, and pictures to show the current and forward-looking state of the technology as applied in Switzerland, a leading country in the field of timber construction.




Timber Framing for the Rest of Us


Book Description

All those of us without traditional skills need to know to build with timber framing Many natural building methods rely upon the use of post and beam frame structures that are then in-filled with straw, cob, cordwood, or more conventional wall materials. But traditional timber framing employs the use of finely crafted jointing and wooden pegs, requiring a high degree of craftsmanship and training, as well as much time and expense. However, there is another way... Timber Framing for the Rest of Us describes the timber framing methods used by most contractors, farmers, and owner-builders, methods that use modern metal fasteners, special screws, and common sense building principles to accomplish the same goal in much less time. And while there are many good books on traditional timber framing, this is the first to describe in depth these more common fastening methods. The book includes everything an owner-builder needs to know about building strong and beautiful structural frames from heavy timbers, including: the historical background of timber framing crucial design and structural considerations procuring timbers-including different woods, and recycled materials foundations, roofs, and in-filling consdierations the common fasteners. A detailed case study of a timber frame project from start to finish completes this practical and comprehensive guide, along with a useful appendix of span tables and a bibliography. Highly illustrated, this book enables 'the rest of us' to build like the professionals and will appeal to owner-builders, contractors and architects alike.




In Situ Assessment of Structural Timber


Book Description

Wood is one of the most intriguing structural materials and the only one that is truly renewable. Along with stone, wood is the oldest structural material on the planet and has been extensively used throughout human history. Due to its aesthetical value and positive environmental impact, wood has experienced a renaissance in construction. As a biodegradable, hygroscopic, non-isotropic material, wood presents special challenges for a professional and requires through knowledge ranging from biology to continuum mechanics. This state-of-the-art report reflects the current knowledge in the area of in situ assessment of the physical and mechanical properties of wood structures. Nondestructive, semi-destructive and destructive methods are described in a systematic manner where technology, equipment and limitations are discussed. Some of the discussed methods are used in other materials such as masonry and concrete. Most of the methods, however, are specific to wood and special qualifications are required to understand and apply these methods effectively. Existing methods are constantly improved and new methods are being developed. This report includes methods that are used in practice or have shown significant promise and have a body of knowledge that supports statements made in this report. This is a useable tool for professionals, researchers, educators and students