Comments on: Michael Green Unveils ‘Tall Wood’ Tower for Vancouver Along With Instruction Manual for Building Wooden Skyscrapers http://inhabitat.com/michael-green-unveils-wooden-tallwood-skyscraper-for-vancouver/ Green design & eco innovation for a better world Sat, 18 May 2013 14:21:36 +0000 hourly 1 http://wordpress.org/?v=abc By: Observer2012 http://inhabitat.com/michael-green-unveils-wooden-tallwood-skyscraper-for-vancouver/comment-page-1/#comment-378962 Observer2012 Mon, 26 Mar 2012 01:46:11 +0000 http://inhabitat.com/?p=364718#comment-378962 I don´t understand why would it be the greenest building. How many trees will have to be chopped down to supply timber? You will need good dried wood for this despite LVL. “The wooden tower may seem like a fire hazard, but in reality it is actually safer than steel.” Mmmmm. Do you have any example of steel framed buildings that collapsed due to fire at 650º Celsius? I don´t understand why would it be the greenest building. How many trees will have to be chopped down to supply timber? You will need good dried wood for this despite LVL.
“The wooden tower may seem like a fire hazard, but in reality it is actually safer than steel.” Mmmmm. Do you have any example of steel framed buildings that collapsed due to fire at 650º Celsius?

]]> By: Andrew Michler http://inhabitat.com/michael-green-unveils-wooden-tallwood-skyscraper-for-vancouver/comment-page-1/#comment-378621 Andrew Michler Fri, 23 Mar 2012 03:49:36 +0000 http://inhabitat.com/?p=364718#comment-378621 @Andy, Steel loses strength very quickly in a fire where wood does not http://www.gsegroup.com/html/modules.php?op=modload&name=News&file=article&sid=152&popup=1&newlang=eng. Yes wood burns, but the larger it is the slower it loses integrity, a predicable effect engineers can design for when making fire rated assemblies. @Andy,

Steel loses strength very quickly in a fire where wood does not http://www.gsegroup.com/html/modules.php?op=modload&name=News&file=article&sid=152&popup=1&newlang=eng.

Yes wood burns, but the larger it is the slower it loses integrity, a predicable effect engineers can design for when making fire rated assemblies.

]]> By: andy monighan http://inhabitat.com/michael-green-unveils-wooden-tallwood-skyscraper-for-vancouver/comment-page-1/#comment-378619 andy monighan Fri, 23 Mar 2012 03:21:48 +0000 http://inhabitat.com/?p=364718#comment-378619 "The wooden tower may seem like a fire hazard, but in reality it is actually safer than steel. When exposed to fire, large timbers develop a charred exterior that insulates the structural wood underneath. In fact, the weakest point in a fire is the steel connection from the beams to the supporting posts." Uh huh... Would you like I send you pictures of various all wood structures of the 'post and beam' type that used just this very sort of wooden beam? I can send 'before and after'. After, typically, is a large hodge podge of burned wood and no identifiable structure. The reason, I think, that the 'weakest point' exists is that steel (pretty much non combustible) is attached one way or another to wood (very combustible). Am I surprised when the wood burns/weakens that the steel 'connector' loses its connection. Not a bit. “The wooden tower may seem like a fire hazard, but in reality it is actually safer than steel. When exposed to fire, large timbers develop a charred exterior that insulates the structural wood underneath. In fact, the weakest point in a fire is the steel connection from the beams to the supporting posts.”

Uh huh… Would you like I send you pictures of various all wood structures of the ‘post and beam’ type that used just this very sort of wooden beam? I can send ‘before and after’. After, typically, is a large hodge podge of burned wood and no identifiable structure.

The reason, I think, that the ‘weakest point’ exists is that steel (pretty much non combustible) is attached one way or another to wood (very combustible). Am I surprised when the wood burns/weakens that the steel ‘connector’ loses its connection. Not a bit.

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