One Young (née Mayfair Hotel) | 5 fl | Complete

[tomh009]

I sure hope they leave that wood exposed inside.

Very cool! It reminds me of The Museum, some of whose floor plates appear to be made entirely of 2x6es (and look like regular hardwood from above). Does anybody know how they are made? I mean, do they glue together a whole bunch of planks next to each other at a factory and then deliver big panels to the work site the same as the precast concrete used for many projects, or do they individually install them on site?

It's cross-laminated timber (CLT), and, yes, you do buy the pre-made floor slabs, doing glue on the construction site would be slow and would not ensure the same level of structural strength.

You can see details here, for example:
https://www.structurlam.com/wp-content/u...uide-1.pdf

[Spokes]

Very cool

I wonder if this will spur more wood framed projects moving forward?

[tomh009]

Very cool

I wonder if this will spur more wood framed projects moving forward?

The wood manufacturers are pushing the use of these types of new structural wood products for use in mid-rise buildings. I can't speak for the cost, but wood definitely has advantages in terms of weight and sound/vibration dampening qualities. And while concrete production creates massive CO2 (an estimated 8% of total global CO2 emissions!), wood construction will actually tie up CO2 in the building.

Mid-rise will be a much easier concept to sell (for wood construction) than high-rise, though.

[Spokes]

What typically constitutes mid rise in this situation. Could they do 8 floors?

[tomh009]

Structural wood can easily do a 20-story building from an engineering point of view. Developers, whose primary experience is in concrete construction, may be more hesitant to take on a tall structural wood project, though.

[Watdot]

Made me think about this article...
https://www.cbc.ca/news/canada/edmonton/...-1.5446858

[bpoland]

Here are some photos of the progress, you can see them lifting a chunk of the floor in the last one.  Seems to be mostly wood construction with a bit of prefab concrete (second pic) and one of the central horizontal beams is metal (3rd pic).

Jan 27
   

Feb 20
   

Mar 4
   

Mar 5
   

[ijmorlan]

You can see details here, for example:
https://www.structurlam.com/wp-content/u...uide-1.pdf

Thanks! Now I want to start planning an addition for my house…

[jamincan]

What typically constitutes mid rise in this situation.  Could they do 8 floors?

University of Toronto is building a new 14-story building with this material.

https://www.utoronto.ca/news/u-t-build-a...nto-campus

[DK519]

What typically constitutes mid rise in this situation.  Could they do 8 floors?

University of Toronto is building a new 14-story building with this material.

https://www.utoronto.ca/news/u-t-build-a...nto-campus

"It follows a growing international trend towards tall timber structures, which have been lauded for their low carbon footprint, fire safety and faster construction time."

What about them deserves lauding for fire safety?

[westwardloo]

University of Toronto is building a new 14-story building with this material.

https://www.utoronto.ca/news/u-t-build-a...nto-campus

"It follows a growing international trend towards tall timber structures, which have been lauded for their low carbon footprint, fire safety and faster construction time."

What about them deserves lauding for fire safety?

CLT (Cross-laminated-timber) NLT (Nail-Laminated-Timber) and GLT (Glue-laminated-timber) tends to char as appose to burn. So structurally it can be more safe than steel as steel melts at high temperatures. The building code and cities are still warming up to the idea of wood as a fire stop though. That is why you see the concrete stair well in many of the wood. 

I do hope a developer in the region will be brave enough to build a highrise timber building in the 10-20fl range. I know of an office building being proposed by Conestoga mall, but it is only 4 floors.  I do think it will be the universities taking the lead on these types of buildings though. So hopefully Waterloo considers it next time they build another engineering building.

[KevinL]

Went on a bit of a Wikipedia dive on the topic, and discovered the wonderful term 'plyscraper'.

[kps]

CLT (Cross-laminated-timber) NLT (Nail-Laminated-Timber) and GLT (Glue-laminated-timber) tends to char as appose to burn. So structurally it can be more safe than steel as steel melts at high temperatures.

JET FUEL CAN'T MELT WOOD BEAMS?

[rickhd]

March 09 2020

[white_brian]

I wonder how this will look and if they are going by the render that was posted back in 2018 (post #312 in this thread)