Mass timber in north america american wood council. Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus. A clt expert clears up several common misconceptions and myths surrounding the use of wood as a building material. To support a larger use of clt, the 2019 edition of the clt handbook has. 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. The handbook is based on the original canadian edition of the clt handbook. Crosslaminated timber construction an introduction. 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 clt handbook is the result of a collaboration between swedish suppliers of cross laminated timber, clt, and the industry body swedish wood. Structural design of cross laminated timber elements. Chapter 1 clt introduction to crosslaminated timber. Identify code and standard updates relevant to clt and other mass timber elements 3. Engineering performance characteristics of hardwood cross laminated timber 8 3. Research in progress 201819 4 table of contents mechanical properties 8 1. Printed copies are available for a fee on amazons printondemand platform beginning march 2, 2020. The benefits of cross laminated timber clt are clear.
Crosslaminated timber was first developed and used in germany and austria in the 1990s. For the clt handbook, we have decided to use the term cross laminated timber and the abbreviation clt. Spectacular and economical projects are possible due to the. Not only is dalston works believed to use more crosslaminated timber clt than any other building in the world, at 33.
Crosslaminated timber clt a subcategory of engineered wood is a wood panel product made from gluing together layers of solidsawn lumber, i. Cross laminated timber clt structural composite lumber scl laminated veneer lumber lvl parallel strand lumber psl. Chapter 5 connections connections in crosslaminated timber. Cross laminated 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. Resource library apa the engineered wood association.
Mass plywood panel product development testing 8 4. Prefabricated rib panels by stora enso make the perfect choice for longspan structures and large open areas featuring unobstructed, columnfree spaces. Crosslaminated timber clt is a largescale, prefabricated, solid engineered wood panel. Omar espinoza, a, vladimir rodriguez trujillo, b maria fernanda laguarda mallo, a and urs buehlmann c in the 20 years since its invention in europe, cross laminated timber clt has become a widely used construction material in parts of the old continent and has started to attract global attention. 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. Mass timber products from underutilized species in northwestern ontario 9 5.
Clt offers design flexibility and low environmental impacts. Combining the clt bbs 125 system format with the largeformat panel clt bbs xl enables builders and designers to work even more flexibly with cross laminated timber clt bbs and therefore making targeted use of each individual format. However, formatting rules can vary widely between applications and fields of interest or study. The future of timber construction clt cross laminated timber. Cross laminated timber clt has become a wellknown engineered timber product of global interest. Pdf lateral design of crosslaminated timber buildings 4. This article provides a stateoftheart report on some selected topics related to clt, in particular production and. Department of agriculture, forest service, forest products laboratory, binational. We offer rib panels made from cross laminated timber clt and glue laminated timber glulam by stora enso. While eightstory cross laminated timber buildings exist in europe, a recent study conducted on behalf of the canadian. Discuss the advantages of cross laminated timber over other building.
This book contains technical information and illustrates clt applications adapted to current codes and standards. Klh panels which can be used for all elements of a buildings superstructure are produced from kilndried finger jointed sprucefur. Cross laminated timber clt is a relatively new building system of interest in north american construction which is helping to define a new class of timber products known as massive timber. The benefits of using solid wood products and structural elements in construction are increasingly recognized in canada and elsewhere. Klh massivholz founded in 1997, is the leading manufacturer of cross laminated timber panels for the uk market.
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. We believe that crosslaminated timber clt will fundamentally change the way we design, manufacture and build. 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. Jan 19, 2016 cross laminated timber clt has become a wellknown engineered timber product of global interest. Clt cross laminated 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. Structural clt floor and roof construction presenter. Fire resistance of unprotected crosslaminated timber wall. 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. Us edition of clt handbook now available proud green home. Publication details owner and publisher proholz austria working group of the austrian timber. It can be achieved with a measured accuracy and lack of noise, waste, or need for material storage space.
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. The clt handbook is part of swedish woods investment in handbooks for building in wood. Nov 01, 2017 work has been completed on a 10storey carbonneutral apartment complex in londons dalston, which architecture firm waugh thistleton claims is the worlds largest cross laminated timber building. Fire resistance of unprotected crosslaminated timber wall assemblies made in the u.
Su ny 2002 novel technologies for subterranean termite. Clt handbook canadian edition research library think. The aim of the clt handbook is to help construction planners to design and plan structures using panels of cross laminated timber. This book is a study of the 100 of the most significant buildings constructed from clt in the united kingdom over the past 15 years.
Cross laminated timber, crosslam, clt, xlam, bsp, mass timber and multiply are common names for sheets, panels, posts and beams made of glued boards or planks layered alternately at rightangles. Download clt handbook or read online books in pdf, epub, tuebl, and mobi format. Wood council concluded that clt is feasible for 12 stories or more. Klh panels which can be used for all elements of a buildings superstructure are produced from kilndried finger jointed sprucefur planks which are sorted and cut into sheets. 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. Clt handbook canadian edition research library think wood. Cross laminated timber clt a subcategory of engineered wood is a wood panel product made from gluing together layers of solidsawn lumber, i. The final part investigates advances in wood composites and looks at the preservation and modification of wood composites, environmental impacts and legislative. Cross laminated timber handbook related to key issues such as structural design. Crosslaminated timber is a solid, multilayered timber construction material. Registration allows the download of apa publications in pdf format by entering your username email address and password. Consider the structural design properties of clt relevant to floor and roof.
Reliable information about the coronavirus covid19 is available from the world health organization current situation, international travel. Cecertificate hasslacher cross laminated timber eta120281 en. Central to tall wood is the development of nextgeneration wood such as cross laminated timber clt, nail laminated timber nlt, dowel laminated timber dlt and glue laminated timber glulam. However, clt can be used in all types of combustible constructioni. Cross laminated timber structural design basic design and engineering principles according to eurocode. Cross laminated 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. Katerras goal is to develop worldclass advanced building materials and systems. Gaining ground in europe, cross laminated timber construction is finding its way to the united states. During the 2000s, it was much widely used in europe.
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. The thickness of the product can be changed as per the requirement of the application. Cross laminated timber clt structural design issuu. We also believe that clt will become the backbone for future generations of highperformance, low carbon buildings.
Klh is k reuz l agen h olz which translated into english means cross laminated solid timber. 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. Introduction to mass timber construction paul coats, pe, cbo southeast regional manager. Cross laminated timber clt, also known as xlam, has enabled much innovation in the use of wood in building construction. Clt handbook download ebook pdf, epub, tuebl, mobi. Cross laminated timber is a sustainable alternative to steel and concrete. A pdf of the handbook is available on fpinnovations website. Chapter 5 connections connections in crosslaminated. It is essentially mass timber plates made from smaller framing lumber laminated crosswise on their wide. The future of timber construction clt cross laminated. Klh is kreuz lagen holz which translated into english means cross laminated solid timber klh massivholz founded in 1997, is the leading manufacturer of crosslaminated timber panels for the uk market. 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. Crosslam clt, as we call our proprietary clt panel, is a revolutionary product. To learn more, check out the clt handbook published by the american wood council awc, the united states u.
This article provides a more detailed introduction to the applications and use of clt as a structural timber product. We offer rib panels made from cross laminated timber clt and glue laminated timber. Seunghyunhong1, lech muszynski1, rakeshgupta1, brent pickett2 oregon state university 1department of wood science and engineering, 2western fire centerinc. Cross laminated timber was first developed and used in germany and austria in the 1990s. Developed for building professionals, the publication provides technical information and illustrates clt applications adapted. Dimensioning clt with stora ensos clt design software 26.
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. Please complete the form to access individual pdf chapters and the complete u. As its production has increased over the years since 2005, it has become widely used lowenstein, 2011. An innovative building material takes hold in oregon. Cross laminated timber has several applications in walls, roofs, and ceilings. Crosslaminated timber clt guidebook crosslaminated timber is a prefabricated, engineered wood building material with unique and often superior building, aesthetic, environmental.
Cross laminated timber has been used in many projects in b. 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 future of timber construction clt cross laminated timber a study about changes, trends and technologies of tomorrow photo. Bonding mixed species for advanced biomaterials 8 2. Numerous and frequentlyupdated resource results are available from this search. Cross laminated timber clt was initially developed in europe as an alternative to stone, masonry and concrete construction. Clt cross laminated 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.
As a result, clt has the potential to change how wood is used in nonresidential and multifamily construction. Under the 2015 ibc, clt at the required size is specifically stated for prescribed use in type iv buildings. Crosslaminated timber has several applications in walls, roofs, and ceilings. Other resources, such as videos and images, may be accessed without log in. 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. Abstract fire hazards are one of the major concerns for wooden constructions. 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. Primarily as a wall, ceiling and roof panel in homes and other buildings. This chapter will introduce clt by tracing its background in research. Crosslaminatedtimber housing offers future of low carbon. New opportunities for taller multifamily buildings the tall wood movement has created new opportunities for multifamily builders.
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