Mass timber elements, including crosslaminated timber. Crosslaminated timber construction an introduction. Cross laminated timber clt a subcategory of engineered wood is a wood panel product made from gluing together layers of solidsawn lumber, i. 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. The global cross laminated timber market size was valued at usd 558. Please complete the form to access individual pdf chapters and the complete u. Surface quality is defined by bsen 171 solid wood panels. Chapter 2 manufacturing crosslaminated timber manufacturing. Cross timber systems is the biggest crosslaminated timber panel production plant in northern europe and scandinavia.
The material can be used prescriptively in buildings up to. Properties of cross laminated timber clt in compression perpendicular to grain conference paper pdf available september 2014 with 1,850 reads how we measure reads. The handbook describes cross laminated timber, clt, as a construction material, as well. Fundamentally, it is possible to produce any clt thickness by combining. Mass timber elements, including crosslaminated timber clt, are allowed outright for certain applications in the 2015 international building code ibc, which has been adopted by washington state. See more on crosslaminated timber properties and applications. Crosslam clt, as we call our proprietary clt panel, is a revolutionary product.
Crosslaminated timber is a solid, large scale, prefabricated, engineered wood panel typically made of multiple layers glued to form structural panels with enhanced strength, rigidity and. Parameters such as charring rate, temperature profile. Crosslaminated 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 crosslaminated timber clt for those considering its use in construction projects. Crosslaminated timber clt, an innovative wood product engineered in europe, has been gaining increased popularity in residential and nonresidential applications in several countries. Unified facilities guide specifications references are in agreement with umrl dated april 2020 section table of contents division 06 wood, plastics, and composites section 06 17 19 crosslaminated timber 1116 part 1 general 1. The clt handbook includes deformation modification factors adjusted. Pdf cross laminated timber is an innovative plateshaped product presenting a. Crosslaminated timber clt a subcategory of engineered wood is a wood panel product made from gluing together layers of solidsawn lumber, i. Clt handbook canadian edition research library think. Crosslaminated timber construction an introduction structural. The orthogonal, laminar structure allows its application as a fullsize wall and floor element as well as a linear timber member, able to bear loads in and outofplane. Clt first conceived in western europe during the late 1980s is an innovative platelike engineered timber product, optimised for. These structural panels offer great strength, dimensional stability and rigidity, and are suitable for loadbearing applications. Department of agriculture, forest service, forest products laboratory, binational.
It is equipped with the stateofart technology and stateofart cnc routers supplied by. Cross laminated timber clt is the engineered wood of the future and is making the construction of entire buildings from timber a reality. Laminated timber solutions crosslaminated timber clt. Cross laminated timber clt is an innovative structural system based on the use of largeformat, multilayered panels made from solid wood boards glued together, and layers at 90 degrees. This article provides a more detailed introduction to the applications and use of clt as a structural timber product. 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. What it is and how to use it madeira laminada cruzada. Clt panels are used for floors, walls and roof construction.
Design of cross laminated timber clt peter mestek dipl. Mass timber elements, including crosslaminated timber clt. The clt handbook is part of swedish woods investment in handbooks for. Crosslaminated timber, or clt, is a relatively new product. Abstract cross laminated timber clt has become a wellknown engineered. At stora enso, our key focus is building with solid wood and we believe in this sustainable and energyefficient construction method for both the public and the private sectors. Cross laminated timber is a solid, multilayered timber construction material. Crosslaminated timber is a solid, multilayered timber construction material. Jun 24, 2012 casa em clt cross laminated timber pronta em 4 dias em valinhos brasil duration. Cross laminated timber, commonly known as clt or crosslam, is a precision engineered building material that, despite a raft of practical and ecological benefits, is yet to be widely adopted by the uk self build market.
Crosslaminated timber clt is a largescale, prefabricated, solid engineered wood panel. As its production has increased over the years since 2005, it has become widely used lowenstein, 2011. Categories cross laminated timber clt properties of clt durability clt durability is dependent on the base material that it is made from. Sep 17, 2015 when seattle architect susan jones built her wonderful little house out of cross laminated timber clt she had to order it from canada. Clt handbook 2012 lumber building engineering scribd.
The focus of this research is on a series of eight mediumscale, fireresistance clt floor tests. Plant occupies more than 8000m2 production area and warehouse facilities. Cross laminated timber clt design guide woodsolutions. Clt offers design flexibility and low environmental impacts. As most clt is made from low durable softwood, it should be protected from the weather. Clt construction is a sustainable and robust solution for a range of building types, including multistorey apartments, school buildings, office buildings and individual houses. Building with clt makes an important contribution to protecting the climate and the environment.
Cross laminated timber properties including effects of non. Clt panels have the specific ability to combine loadbearing capac. They can be clad with plasterboard internally, or the. Barriers to the design and use of crosslaminated timber. The us edition of the clt handbook is a 572page guide and is the definitive handbook on crosslaminated timber clt and covers. In other words, clt is a precracked composite where.
The clt handbook is part of swedish woods investment in handbooks for building in wood. This chapter will introduce clt by tracing its background in research. However, there is little published information available regarding its performance in fire. See more on expan innovation in post tension timber.
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 handbook is based on the original canadian edition of the clt handbook. Crosslaminated timber is now made in the usa treehugger. Chapter 5 connections connections in crosslaminated. A clt timber expert clears up several common misconceptions and myths surrounding the use of cross laminated timber as a building material. Use of crosslaminated timber clt panels in building construction has. Crosslaminated timber clt is an innovative wood technology currently gaining popularity in canada. A model of selfextinguishment of clt was created which consists of various. Shrinkage clt has minimal shrinkage and swelling in part due to dried lamellas, precision cut dried prefabricated panels. Uk the scheme adopts cross laminated timber clt construction to form the full superstructure.
Clt is characterised by timber slats glued in the form of a cross and is mainly applied for massive constructions, floor plates and wall panels. Cross laminated timber is a wood panel product that is made by gluing together layers of lumber stacked in alternating perpendicular directions. Crosslaminated timber clt is an innovative structural system based on the use of largeformat, multilayered panels made from solid wood boards glued together, and layers at 90 degrees. Cross laminated timber market size global clt industry. Portlands timber framework highrise now has a building permit. Chapter 5 connections connections in crosslaminated timber. Crosslaminated timber paperback january 1, 20 see all formats and editions hide other formats and editions. 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. Gaining ground in europe, crosslaminated timber construction is finding its way to the united states. How crosslaminated timber buildings are built woodworking. May 14, 2018 crosslaminated timber clt is when layers of timber, known as lamellas, are glued together with the grain alternating at 90 degree angles for each layer. 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. Us edition of clt handbook now available proud green home.
Categoriescrosslaminatedtimberclt properties of clt durability clt durability is dependent on the base material that it is made from. Pdf crosslaminated timber clt a state of the art report. Glue is applied between the layers on timber faces, but, most commonly, no glue is applied on timber edges within layers. 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. The material can be used prescriptively in buildings up to 6stories for offices and 5stories for residential. Cross laminated timber clt, also known as xlam, has enabled much innovation in the use of wood in building construction. Clt offers a multitude of benefits in regards to the performance and sustainability of the environment. Global sustainability concerns coupled with rising awareness about wood as a building material among consumers are the factors likely to boost market growth in the coming years.
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. Gaining ground in europe, cross laminated timber construction is finding its way to the united states. Cross laminated timber clt was initially developed in europe as an alternative to stone, masonry and concrete construction. Unified facilities guide specifications references are in agreement with umrl dated april 2020 section table of contents division 06 wood, plastics, and composites section 06 17 19 cross laminated timber 1116 part 1 general 1. Clt panels can be made in dimensions up to 10 feet wide and 40. This article provides a stateoftheart report on some selected topics related to clt, in particular production and. 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.
Crosslaminated timber handbook related to key issues such as structural design, connectors, vibration, and fire resistance. Crosslaminated timber clt is an innovative timber product designed and processed by laminated timber solutions. Crosslaminated timber, or clt, is an engineered wood panel product. May 20, 2018 news articles wood materials map clt cross laminated timber mlc cite. Chair of timber structures and building construction, technical university munich, germany summary this paper is focused on calculation and design methods for cross laminated timber clt. Clt connections page 1 36 b u tt j oi n t w i th sp l i c e p l a te 082014 disclaimer. Numerous impressive buildings built around the world using clt have become a good testimony of the many advantages that the product can offer the construction. To learn more, check out the clt handbook published by the american wood council awc, the united states u. As it is available readily manufactured from sustainably managed forests as well as its longterm storage of the carbon absorbed by the sustainably grown trees, the production of clt results in substantially fewer greenhouse gas emissions than many nonwood materials. The clt handbook is the result of a collaboration between swedish suppliers of cross laminated timber, clt, and the industry body swedish wood. The benefits of using solid wood products and structural elements in construction are increasingly recognized in canada and elsewhere.
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. Clt buildings can be approved under current building codes and how this will change under. Jan 19, 2016 cross laminated timber clt has become a wellknown engineered timber product of global interest. Adhesives for crosslaminated timber clt crosslaminated timber panels are layers of solidsawn or structural composite lumber glued together in alternating grain orientations. It is equipped with the stateofart technology and stateofart cnc routers supplied by the general supplier ledinek. A configuration somewhat similar to combining cltpanels and glued laminated beams is. Gluelaminated timber glulam is when laminates are glued together by layering them with the grain, which produces larger and longer length members. The answer is crosslaminated timber clt, a relatively new engineered wood product that is part of a broader category of products called mass timber that includes already popular products such as glulam beams. Apr 26, 2017 cross laminated timber also known as clt is a structural material that can be cheaper, faster, quieter and more sustainable than concrete and steel.
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