Research suggests a wooden future for skyscrapers

Skyscrapers dominate the skylines of our major cities, offering more urban density and greater flexibility than smaller buildings. However, concrete- and steel-based tall structures require huge amounts of energy for their construction, which comes at a significant environmental cost. This can be mitigated by incorporating technologies such as solar power, passive cooling systems and efficient lighting into the design, but what if we could go even further and build skyscrapers using sustainable materials? Herein lies the impetus behind recent research into the efficacy of wooden skyscrapers.

Before considering the technical hurdles of constructing tall buildings from wood, perhaps the first question which should be asked is: what are the specific benefits wood can offer over concrete and steel?

Sustainability 

The single most compelling argument in favor of building wooden skyscrapers is the fact that, providing the timber is sourced responsibly, they represent an opportunity to create a sustainable building on a truly grand scale, cutting down on overall CO2 output as a result.

As a recent lengthy report on the subject by Michael Green Architects (MGA) entitled "Tall Wood" [PDF] asserts:

"Over the last twenty years, as the world’s understanding of anthropogenic climate change has evolved, we have seen the large impact that buildings contribute to the greenhouse gases causing climate change. Concrete production represents roughly 5 percent of world carbon dioxide emissions, the dominant greenhouse gas. In essence the production and transportation of concrete represents more than 5 times the carbon footprint of the airline industry as a whole. It is clear that the very fundamentals of what materials we build our buildings with are worth re-evaluating."

The "Timber Towers" [PDF] report produced by Skidmore, Owings & Merrill (SOM) cites the potential to compete with reinforced concrete and steel, while reducing the carbon footprint by 60 to 75 percent.

Structural Strength 

To cope with the heavy load, stresses, and vibrations a skyscraper undergoes daily, it needs to be built from material far more durable than normal timber. The SOM and MGA reports both agree that the solution to constructing tall buildings from wood rests on the use of "Mass Timber."

SOM's report defines Mass Timber as solid panels of wood, engineered for greater strength through the lamination of different layers.

SOM's researchers prefer to add concrete connecting joints when building with Mass Timber, while MGA utilizes steel to reinforce the mass timber panels. Whichever reinforcing method is chosen, the result is a very tough building material which is worlds away from the timber framing used to build many homes, and suitable for tall buildings up to 30 stories in height, even in high seismic areas like Vancouver.

(Read More) 

(Excerpt of article by Adam Williams. NOT AFFILIATED WITH LAMBOO)

                                                                                                                                                             

Lamboo, Laminated Veneer Bamboo (LVB), is unmatched in its potential as an environmentally friendly and structurally stable building material. Bamboo can be produced on a large scale with much more ease than timber forests cutting costs and limiting energy consumption. Testing and predictions from experts has led to Bamboo being referred to as "the next super material" due to its amazing attributes and resiliency.

In its engineered form (Lamboo) bamboo is the ideal bio-based product for applications requiring superior structural strength and longevity. In fact, Lamboo components are on average 20% more stable than hardwoods and up to 40% more stable than softwoods such as Pine or Douglas Fir.

Lamboo's popularity as a sustainable, higher performing product is growing; we encourage you to learn more from the links below and to contact us with any questions that should arise.

About Bamboo as a resource

-  Produces 30% more oxygen in comparison to similar size timber forest area

-  Sequesters 35% more carbon in comparison to similar size timber forest area

-  Growth rate of 6-8 years to maturity (In comparison to 25-50 for traditional timber)

-  Root structure eliminates need to replant

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Research

Evolving Building Codes: Wood Revolution

Pushing the boundaries of innovative wood design and construction

There is a quiet revolution taking place within the design community. After a prolonged emphasis on concrete and steel for buildings other than homes, design professionals are using wood to great effect in a growing number of non-residential and multi-family building types—in applications that range from traditional to innovative, even iconic. Some are driven by wood's cost effectiveness while others cite its versatility or low carbon footprint, but their collective path has been made possible by building codes that increasingly recognize wood's structural and performance capabilities, and the continued evolution of wood building systems and techniques.

When the International Building Code (IBC) was introduced in 2000, it consolidated three regional model building codes into one uniform code that has since been adopted by most jurisdictions. It increased the possibilities for wood construction by (among other things) recognizing additional fire protection techniques, consolidating the maximum allowable areas and heights from the three legacy codes into one (thus increasing what's allowable in some jurisdictions), and allowing the use of wood in a wider range of building types. In subsequent versions of the IBC, even more opportunities have been created where additional fire protection features are used.

Even so, the pioneering nature of building design is such that there are always architects and engineers seeking to push beyond the conventional, and it is common for project teams to require—and be granted—variances for designs not covered in the code that can nonetheless be justified on a case-by-case basis.

This CEU will examine the use of wood both within the current IBC and through building projects that have further pushed the boundaries of wood design and construction.

(Read More)

(Excerpt of article by Continuing Education Center. NOT AFFILIATED WITH LAMBOO)

Timber is increasingly being recognized for its potential as a sustainable building material in an era where designers are looking for alternatives to the non-renewable resources traditionally used. We must start using options that we can replenished over time rather than using a finite resource; however, effective in terms of application and cost it ultimately may be. Many species of timber have attributes that make it ideal for construction and even though it is renewable many of these species take 25-50 years to reach maturity and require expensive and damaging replanting, threatening many weakened ecosystems. Due to these concerns, Bamboo is being used in many applications where timber has in the past providing remarkable strength, performance, and stability far exceeding any other natural materials (in addition to having a growth rate of 6-8 years). Testing and forecasting by experts has led to the coining of the term "the next super material" due to Bamboo's amazing attributes and resiliency.

As the world leader in the industrialization of bamboo, Lamboo is striving to make this prediction a reality by manufacturing the world's first certified structural grade bamboo component, laminated veneer bamboo (LVB). Through species selection, patented adhesives, and manufacturing processes Lamboo is able to create bamboo panels and components that far exceed wood's performance in nearly every aspect.

For questions regarding Lamboo or our products please visit our website
at www.lamboo.us or contact us at info@lamboo.us 866-966-2999
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“MAKING INNOVATIVE THINKING A STANDARD” – Lamboo Incorporated

Blog by: Dustin Dennison