Imagine the Empire State Building. Now image it made of wood. That concept may sound ludicrous at first, but Metsä Wood, a Finnish woods products producer is tackling the idea to prove its feasibility, titling the project ‘Plan B.’
For nearly 40 years after its completion in 1931, the Empire State Building was the tallest building in the world, standing at 1,454 ft. with 86 stories. Designs for a wooden version of the building mirror exactly the overall size, floor to floor height and column spacing.
A diagram of the Wooden Empire State Building standing beside the world's tallest tree. (Image courtesy Metsä Wood)
Transporting and assembling their pre-fabricated building materials takes less time and money, says Metsä. Trucks can carry five to six times more wood than concrete and connection points and lightness make for a faster onsite assembly.
In the event of a fire, Kerto wood has a notional charring rate of 0.7 mm per minute. As the wood burns, the charred surface insulates the rest of the wood, slowing the burning process. Sprinklers and drywall protect the wood as first lines of defense.
In contrast, the Empire State Building requires full protection by insulation, drywall, stone and other fire resistant materials.
The question remains however, what would using so much wood mean for deforestation? Metsä assures its Kerto wood comes only from “certified, responsibly managed forests that grow significantly faster than they are used. Four saplings are planted for each tree that we use.”
Why Wood can be our ‘Plan B’
The design and construction plan for the wooden Empire State Building was made by Canadian architect Michael Green and his firm, MGA. Equilibrium Consulting, a specialist in timber engineering, provided expertise on structural matters. Metsä Wood’s own material and construction experts rounded out the team.
“I believe that the future belongs to tall wooden buildings,” says Green. “Significant advancements in engineered wood and mass timber products have created a new vision for what is possible for safe, tall, urban wood buildings. The challenge now is to change society’s perception of what’s possible. In fact, this is the first new way to build a skyscraper in the last 100 years.
With Plan B, Metsä and Green hope to open the minds of construction engineers, architects and builders to the possibilities of wood as a key building material. As part of the project, Metsä will show in detail how to build wooden versions of other word-known buildings, like the Roman Coliseum, to be published this year.
Plan B’s concept planning for the wooden Empire State Building is only its first of three phases. Phase two will release technical designs to the public and phase three will see construction. No information concerning construction has yet been released.
For more photos, video and updates on Plan B, visit metsawood.com/planb.
All images courtesy Metsä Wood.