The layered stacks are then pressed in large hydraulic or vacuum presses to form an interlocked panel. Klh panels which can be used for all elements of a buildings superstructure are produced from kilndried finger. Plant occupies more than 8000m2 production area and warehouse facilities. Discuss the advantages of cross laminated timber over other building. Cross laminated timber clt was initially developed in europe as an alternative to stone, masonry and concrete construction. Prefabricated rib panels by stora enso make the perfect choice for longspan structures and large open areas featuring unobstructed, columnfree spaces. Clt structural panels have exceptional strength and stability and can be used as floors, walls and roofs in building construction. Seunghyunhong1, lech muszynski1, rakeshgupta1, brent pickett2 oregon state university 1department of wood science and engineering, 2western fire centerinc.
The manufacture of crosslaminated timber, with an annual production capacity of 80,000 cubic meters, is a natural addition to the nordic product range, especially the glulam. Barriers to the design and use of crosslaminated timber. We use only environmentallyfriendly adhesives to press them into structural panels of exceptional dimensional stability and rigidity. This site is like a library, use search box in the widget to get ebook that you want. Demonstrate the typical interface between design team and clt manufacturer on commercial and multi family projects. Introduction to cross laminated timber request pdf. Crosslaminated timber construction an introduction. Naillaminated timber nlt or naillam is a centuryold construction method that is undergoing a design renaissance. Cross laminated timber clt offers a new building system option for nonresidential and multifamily construction. Explain best practices for designing a cross laminated timber clt building for cost efficiency, addressing items such as spans, thicknesses and specifications.
We also believe that clt will become the backbone for future generations of highperformance, low carbon buildings. Nordic engineered woods goal is to provide the most consistent, highquality finished products available. Its been described as the concrete of the 21st century and inspired the term plyscraper read on to discover more about clt cross laminated timber or download the free woodsolutions handbook. Clt handbook 2012 lumber building engineering scribd.
It can be found today in many historical buildings as well as in compelling new projects of all sizes, where its structural performance and design elegance come together to create inspiring spaces. This cross laminated timber clt info sheet series provides a general overview of cross laminated timber in buildings, relevant design information, and a synthesis of research on embodied and stored carbon of clt. Ansiapa prg 320 2012 standard for performancerated crosslaminated timber fp innovations, us clt crosslaminated timber handbook 20 asce 710 minimum design loads for buildings and other structures aisc 36010 specification for structural steel buildings apa product report prl314 crosslam by structurlam products lp. The focus of this research is on a series of eight mediumscale, fireresistance clt floor tests. Chapter 1 clt introduction to crosslaminated timber. Cross timber systems is the biggest crosslaminated timber panel production plant in northern europe and scandinavia. Nordic engineered wood, structurlam, and clt canada. Wood is certainly one of the worlds oldest construction materials and this unique material has long been associated with tradition and rural cosiness. Cross laminated timber clt panels are formed by stacking and gluing together successive perpendicular layers of wood. Lightweight yet very strong, with superior acoustic, fire, seismic, and thermal performance, clt is also fast and easy to install, generating almost no waste onsite. Apart from some national application documents for ec 5. Us edition of clt handbook now available proud green home. Lightweight and easy to use, nordic xlam has a smaller ecological footprint than that of other building materials, making it the ideal choice for sustainable and environmentally responsible construction. Canadian clt handbook mass timber products and info cross laminated timber a primer standard for performance rated crosslaminated timber clt symposium videos, woodworl.
Clt offers design flexibility and low environmental impacts. Crosslaminated timber clt a state of the art report vacuum jacks, and the values range from 0. Those light frame construction and mass timber systems, all of which have applications across building types. Engineered wood products offer a strong combination of. One reason for this development is the commercial launch of the innovative laminar timber product cross laminated timber clt, a quasirigid composite, platelike engineered timber product, which is commonly. Unlike some traditional wood products, interaction with the product manufacturer, on elements such as 3d building models and whole building shop drawings, is important to the design of a successful clt structure. First developed in switzerland in the 1970s, clt is an extension of the technology that began with plywood and may be best described as a jumbo plywood.
Fire resistance of unprotected crosslaminated timber wall assemblies made in the u. Clt is a valuable addition to woodbased building systems clt is welcomed by the design and construction community notable progress made on clt research and standards clt handbook facilitates code compliance as alternate solution commercial production is commencing in 2011. Building construction chapter 4 flashcards quizlet. Moreover, most current projects use clt in oneway systems, which do not take full advantage of the. C24 use is still more common, though c16 timber is more readily available in the uk suggesting that clt manufacturing might become more feasible in the future. Bbs is made from 99,4 % timber and 0,6 % glue that is bbs, a monolithic building material. We believe that crosslaminated timber clt will fundamentally change the way we design, manufacture and build. Product largesized solid wood panel with crosswise glued lamellae product namebrand klh other product names crosslaminated timber clt, plywood boards pbs, xlam use structural elements for walls, ceilings and roofs durability service classes 1 and 2 according to en 199511 wood types spruce pine, fir, stone pine and other wood types on request panel structure 3, 5, 7 or more layers. Thanks to its excellent physical and mechanical properties, this laminar timber material has both exceptional thermal insulation properties and can also dissipate loads in several directions. The panel is then sized and shaped with a computer numerically control cnc machine into a fully constructionready component. See more on expan innovation in post tension timber. Cross laminated timber clt is the engineered wood of the future and is making the construction of entire buildings from timber a reality. Parameters such as charring rate, temperature profile. It is equipped with the stateofart technology and stateofart cnc routers supplied by the general supplier ledinek.
Clt allows for largeformat wooden panels it is possible to manu. Cecertificate hasslacher cross laminated timber eta120281 en. Our experience in engineering and construction of timber structures includes supply and install of integrated materials such as glass, steel, and concrete. Combining the bbs 125 system format with the largeformat panel bbs xl enables builders and designers to work even more flexibly with bbs cross laminated timber and therefore making targeted use. Clt crosslaminated timber application wood building systems language english research status complete summary the clt handbook provides vital how to information on clt for the design and construction community, and is a great source of information for regulatory authorities, fire. It causes tall wooden building code restrictions in the u. However, there is little published information available regarding its performance in fire. Clt handbook was developed by a team of more than 40 experts from across the globe, and funding for this project was received from the binational softwood lumber council, forestry innovation investment, and three north americabased clt manufacturers. Viability of hybrid poplar in ansi approved crosslaminated timber applications.
Cross laminated timber clt in the context of wood building. Clt handbook canadian edition research library think. Crosslaminated timber is a sustainable alternative to steel and concrete. Crosslaminated timber is a wood panel consisting of multiple layers of lumber oriented at right angles to one another and then bonded together andrew crampton is a practicing planner in the portland metro area and a graduate student at portland state university. Clt handbook download ebook pdf, epub, tuebl, mobi. Klh massivholz founded in 1997, is the leading manufacturer of crosslaminated timber panels for the uk market. A clt expert clears up several common misconceptions and myths surrounding the use of wood as a building material. Australian cross laminated timber panel structural guide xlam australia pty ltd au this preanalysis guide provides key information necessary for the preliminary assessment of xlam structures.
Crosslaminated timber clt is an innovative timber product designed and processed by laminated timber solutions. Clt crosslaminated timber application wood building systems language english research status complete summary the clt handbook provides vital how to information on clt for the design and construction community, and is a great source of information for regulatory authorities, fire services and others. The handbook describes cross laminated timber, clt, as a construction material, as well. Describe the characteristics of cross laminated timber clt and its use in a.
This article provides a more detailed introduction to the applications and use of clt as a structural timber product. See all formats and editions hide other formats and editions. Pdf lateral design of crosslaminated timber buildings 4. The us edition of the clt handbook is a 572page guide and is the definitive handbook on crosslaminated timber clt and covers manufacturing, structural design, connections, fire and environmental performance, and the lifting and handling of clt elements. History of clt in the early 1990s an innovative wood product known as crosslaminated timber clt was introduced in austria and germany. Crosslaminated timber clt, a new generation of engineered wood product developed initially in europe, has been gaining increased popularity in residential and nonresidential applications in several countries. The future of timber construction clt cross laminated. While the material in this publication is believed to be technically correct and in accordance with sound practice at the time of publication, it should not be used without first obtaining. Clt cross laminated timber a great addition to woods tool box prefabricated structural wall, roof, floor panels. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
The clt handbook is the result of a collaboration between swedish suppliers of cross laminated timber, clt, and the industry body swedish wood. Cross laminated timber an introduction to lowimpact building materials andy sutton and daniel black, bre pete walker, university of bath this information paper provides a broad view of the benefits and limitations of cross laminated timber clt for those considering its use in construction projects. This publication is intended as a guide for those intending to construct a mass timber building system using structurlam crosslam clt and glulamplus. Each layer of boards is usually oriented perpendicular to adjacent layers and glued on the wide faces of each board, usually in a symmetric way so that the outer. Crosslaminated timber clt structural design basic design and engineering principles according to eurocode this document of proholz ausrtia provides a wide perspective along with many details about the structural design of clt. Laminated timber solutions crosslaminated timber clt. The clt handbook includes deformation modification factors adjusted to clt. Clt building systems shall comply with the serviceability requirements of ossc section 1604. Unified facilities guide specifications references are in agreement with umrl dated january 2020 section table of contents division 06 wood, plastics, and composites section 06 17 19 cross laminated timber 1116 part 1 general 1.
Crosslaminated timber is a solid, multilayered timber construction material. Click download or read online button to get clt handbook book now. While eightstory cross laminated timber buildings exist in europe, a recent study conducted on behalf of the canadian. Products that make up heavy timber construction include. The future of timber construction clt cross laminated timber a study about changes, trends and technologies of tomorrow photo. To support a larger use of clt, the 2019 edition of the clt handbook has been completely revised and improved based on new research performed by fpinnovations and partners to reflect changes made since the 2011 edition in recent canadian codes and standards. Cross laminated timber clt in the context of wood building systems. Cross laminated timber preservative treatment xlam new zealand july 2018 introduction xlam commenced manufacture of cross laminated timber clt for the new zealand market in q1 of 2012, the first manufacturers in the southern hemisphere. Crosslaminated timber, or clt, is a relatively new product.
Cross laminated timber clt design guide woodsolutions. Structural optimization of crosslaminated timber panels. Wood offers a combination of natural structural properties and aesthetics, suiting it for a range of applications in the built environment. Introducing cross laminated timber clt to north america cross laminated timber clt has gained traction since 2000 in the emerging green building movement. The future of timber construction clt cross laminated timber. Each layer of boards is usually oriented perpendicular to adjacent layers and glued on the wide faces of each board, usually in a symmetric way so that the outer layers have the same orientation. Chapter 5 connections connections in crosslaminated timber. It is essentially mass timber plates made from smaller framing lumber laminated crosswise on their wide. The modelc demonstration project at 201 hampden is a mass timber, midrise, multifamily, and certified passive house building that shows how crosslaminated timber systems can be leveraged to meet complex design and sustainability goals. Crosslam clt, as we call our proprietary clt panel, is a revolutionary product. The clt handbook is part of swedish woods investment in handbooks for building in wood.
To learn more, check out the clt handbook published by the american wood council awc, the united states u. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. An innovative building material takes hold in oregon by. This figure can go up to 77% in different studies 8. Abstract cross laminated timber clt has become a wellknown engineered. It covers material properties, design principles, connections, and includes pre analysis span tables derived from extensive product testing. We offer rib panels made from cross laminated timber clt and glue laminated timber glulam by stora enso. Cross laminated timber clt which was first developed in europe in the 1990s is a new type of woodbased panel that is being manufactured by crossly laminating the laminae at right angle of fiber. Cross laminated timber clt is an innovative wood technology currently gaining popularity in canada. Product standardcertification eta120281 surface qualities excellentsurface visual quality. Abstract fire hazards are one of the major concerns for wooden constructions. Crosslaminated timber clt by stora enso is a massive wood construction product consisting of at least three singlelayer panels that are bonded together crosswise. Mass timber materials dlt, clt, glulam structurecraft. This crosslaminated timber clt info sheet series provides a general overview of crosslaminated timber in buildings, relevant design.
To support a larger use of clt, the 2019 edition of the clt handbook has been completely revised and improved based on new research performed by fpinnovations and partners to reflect changes made since the 2011 edition in recent canadian codes. Pdf crosslaminated timber clt a state of the art report. Crosslaminated timber clt is a largescale, prefabricated, solid engineered wood panel. Highlight keys to successful clt project delivery, from. See more on crosslaminated timber properties and applications. The us edition of the clt handbook is a 572page guide and is the definitive handbook on crosslaminated timber clt and covers. Fire resistance of unprotected crosslaminated timber wall. We manufacture or source a range of mass timber products including dlt, clt, nlt, and glulam as well as steel components such as connections, cables, and castings. Cutts gymnasium is a 11,266 square foot facility in washington, d. Cross laminated timber clt a subcategory of engineered wood is a wood panel product made from gluing together layers of solidsawn lumber, i. Rated crosslaminated timber this standard provides requirements and test methods for qualification and quality assurance for performance rated crosslaminated timber clt intended for use in construction applications. Gaining ground in europe, cross laminated timber construction is finding its way to the united states. Please complete the form to access individual pdf chapters and the complete u. Crosslaminated timber clt is a wood panel made of several layers of dried lumber boards stacked in alternating directions, glued and pressed to form rectangular panels.