Is Cross-Laminated Timber a Game Changer?

Cross Laminated Timber

If you haven’t already heard of Cross-Laminated Timber (CLT) by now, you will.  More and more architects and designers are making the switch to building with Cross-Laminated Timber, some even going as far to refer to it as the “Concrete of the 21st Century”.

Nearly every day, there is news about new multi-family and commercial structures constructed using this seemingly “magical” material. It’s even being embraced by mainstream companies like McDonald’s.  In fact, demand for this material is expected to grow by as much as 15% over the next decade.

But what is it? Cross-laminated timber (CLT) is a large-scale, prefabricated, solid engineered wood panel that is made up of kiln-dried wooden boards stacked in alternating directions (where the cross of the name comes from), then stuck together with structural adhesives. While at the mill, CLT panels are cut to size, including door and window openings, with state-of-the art CNC (Computer Numerical Controlled) routers, capable of making complex cuts with high precision. Finished panels are typically 2 to 10 feet wide, with lengths up to 60 feet and thickness up to 20 inches.

Watch the video below for more details:

What are the Benefits of Cross-Laminated Timber? CLT is lightweight yet very strong, with superior acoustic, fire, seismic, and thermal performance making it ideal for long spans in walls, floors, and roofs. It’s also fast and easy to install, generating almost no waste onsite. Finished CLT panels are exceptionally stiff, strong, and stable. Other benefits include:

Simple, Quick Construction
CLT panels are lightweight and arrive on site with a structural system ready to be assembled. The process is both simple and swift, allowing for immediate and accurate construction which in turn saves time and money.

Fire-Resistant
Though it may sound strange to tout fire-resistance as a benefit of a wooden building material, it’s one of Cross-Laminated Timber’s greatest strengths. The lamination of CLT has an inherent fire-resistance to it, and the construction of the panels and structures allows little room for fire to spread. Additionally, the solid thermal mass of CLT prevents the conduction of heat from one side of the panel to the other, allowing extremely high temperatures to remain isolated to a side as the other remains at room temperature.

Sustainable
The nature of wood makes it the only building material that can be regrown and feasible in the long-term. Precision cutting of CLT minimizes on-site waste and its manufacturing requires less energy than producing steel or concrete. Cross-Laminated Timber’s light carbon footprint is one of its greatest strengths.

Acoustic Insulation
Solid wood paneling provides superior acoustic insulation, dampening both airborne and impact noises. Its lightweight nature also leads to quiet construction, making it ideal for urban development.

Thermal Insulation
In the same way that Cross-Laminated Timber’s airtight design creates auditory insulation it also creates thermal insulation. Tightly packed panels can trap 90% of the heat that would ordinarily escape from a home. CLT’s previously-mentioned high thermal mass means that temperatures are kept stable and comfortable.

Pleasing Aesthetics
There’s a warm, soothing visual quality to building with wood that separates it from the lifeless concrete slabs that typically fill a city. Cross-Laminated Timber also grants designers with the freedom to experiment with more organic and creative structures than previously allowed by old-fashioned building techniques.

When comparing the manufacturing costs of certain steels and concrete, as well as the money saved on shorter construction time, CLT comes out as at a competitive price.

To learn more, visit CLT Basics on www.apawood.org & Is the Construction Industry About to Enter a Timber Age? on our blog.

Photo labeled for reuse @ flickr.com/photos/designmilk

2018 International Mass Timber Conference

“We believe that a greater use of cross-laminated timber and other mass timber products in mid- to high-rise building construction is the innovative, disruptive, modern, and sustainable choice necessary for building in a fast-growing world.”

masstimberconference.com

As one of the world’s top companies in the wood products industry, Willamette Valley Company continues to strive to be on the forefront of the advancement and possibilities of the mass timber industry and cross-laminated timber. Last week, WVCO proudly represented our wood products division at the 2018 International Mass Timber Conference, the premier, global conference for cross-laminated timber and other mass timber construction.

This conference, co-produced by WoodWorks and the Forest Business Network, is one of the largest gatherings of mass timber experts in the world. Architects, engineers, city planners, representatives from major construction companies, mass timber manufacturers, designers, fire officials, mass timber equipment suppliers, representatives from sawmills and many more gathered in Portland, Oregon for the 3-day event packed with presentations and learning opportunities from international experts and presentations.

Demand for cross-laminated timber and construction is growing all over the world. Recently, a new study by Grand View Research, Inc suggests the growing demand for sustainable houses made from wood is likely to drive the global cross-laminated timber market. The report states that the “market is expected to reach a valuation of USD 2.07 billion by 2025. Rising awareness among consumers regarding wooden products and increasing number of suppliers for cross-laminated timber (CLT) are likely to augment the growth. Based on product type, the market can be classified as adhesive bonded and mechanically fastened CLT.”

As more and more evidence is suggesting that CLT is the future of the construction and building industry, the Willamette Valley Company will certainly be participating in more of these types of conventions and pledges to remain one of the top innovators in the wood products industry.

 

Did You Know the First Company Certified to Manufacture Cross Laminated Timbers is in Oregon?

DRJohnson

Oregon company D.R. Johnson made history in September of 2015 when they became the first American company certified to produce Cross-Laminated Timber.

For the uninitiated, Cross-Laminated Timber (CLT) is a sustainable modern building material that brings tremendous benefits to constructions and the surrounding environment. Such benefits include affordability, reduced construction time, a lowered environmental impact, durability, and heat insulation.

To be able to produce CLT panels for construction, a company must first become certified by the American Plywood Association and the American National Standards Institute. This is no small feat and a great achievement accomplished by D.R. Johnson Lumber.

CLT manufacturing brings tremendous potential not only for Oregon but for the country as a whole. CLT constructions are growing in such popularity that many experts believe we are entering a “Timber Age” of construction. More projects and structures are embracing the material, and D.R. Johnson is always providing CLT panels for two of them in Oregon alone; the Albina Yard Project in Portland and the Woodcock Education Center in Monmouth.

UBC's Earth Sciences Building - Photo Source See-Change.net

UBC’s Earth Sciences Building – Photo Source See-Change.net

Established in 1951 in Riddle, Oregon, D.R. Johnson is a family-owned wood product manufacturer now lead by sisters Valerie Johnson and Jodi Westbrooks. The company’s vast experience producing riddle laminators (structural glue laminated beams) has undoubtedly served them well as they transitioned into producing Cross-Laminated Timber panels. Their infrastructure, tools, and local timber bounty will undoubtedly serve them well in this exciting venture.

Making history is an exciting event in its own right and we can’t help but look towards D.R. Johnson’s future endeavors with Cross-Laminated Timber with excitement. We know we’ll be seeing more and more wooden constructs in the very near future.

Sources:

OregonCLT

CapitalPress

Is the Construction Industry About to Enter the “Timber Age”?

Tham & Videgård Arkitekter's Wooden Highrise apartments for Stockholm

Tham & Videgård Arkitekter’s Wooden Highrise apartments for Stockholm. Photo Source: /www.dezeen.com/

“New types of engineered timber that are considerably stronger and more stable than regular wood are allowing architects to build bigger and higher, with timber skyscrapers now a real prospect.”-www.dezeen.com

As we are about to enter a new year, we in the timber industry are asking,

Are we entering what architects are calling “The Timber Age”?

As more and more builders are seeking sustainable designs, some architects appear to moving away from conventional materials (i.e.steel, masonry, concrete) and embracing wood as the “architectural wonder material of the 21st century”.

And it’s no wonder.  Builders and  architects alike are recognizing timber for it unique aesthetics, sustainability, quality and speed of construction.

“This is the beginning of the timber age,” said UK architect Andrew Waugh in this recent article. Waugh’s firm is behind a housing development in London that will use more timber than any other project in the world.

In Portland OR, builders plan to build a 12-story tower the city’s famed Pearl District.  In the Portland Tribune, Thomas Robinson of Lever Architecture says that this type of wood not only resists fires, it will have the ability to absorb the shock of a major earthquake.

These buildings are not limited to London and Portland.  Plans for these tall timber buildings are also cropping up in Manhattan, Italy, Australia British Columbia and many more locations all over the world.

The building material making these wooden tower structures possible is cross-laminated timber (CLT)– a large-scale, prefabricated, solid engineered wood panel.

Will cross laminated timber (CLT) take over steel and concrete as the preferred building material?


In it’s description of cross-laminated timber (CLT), APA – The Engineered Wood Association describes the material as “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 offers design flexibility and low environmental impacts.”

This video reviews the Tall Timber Report that Skidmore, Owings & Merrill, LLP developed as it relates to the details of the hybrid building system, fire and durability.

Aside from the structural benefits of wood, there are other benefits to using this material in buildings. Exposure to natural materials has real and measurable health and wellbeing benefits for the building’s occupants.  Corey Griffin, an Associate Professor at the Architecture School at Portland State University, says studies have shown that people are more productive and less stressed in buildings with access to natural materials.

In addition, research suggests that these modern wood structures may result in lower costs and a lower carbon footprint since production and processing of wood uses less energy than most other building materials.

This is a very exciting time for the timber industry as the technology, research and designs evolve.  To learn more about this movement, we encourage you to take a look at some of these resources.

Article Resources:
www.dezeen.com
www.rethinkwood.com
www.woodworks.org
portlandtribune.com