[AlvinofDiaspar]

Not sure if this had been posted before:

And the ArcelorMittal case study of 1BW (including info on the TMD): https://amiresources.arcelormittal.com/strapidata/uploads/A913_One_Bloor_West_8df425b032.pdf

AoD

 

[Johnny Au]

December 14, 2025:

Yonge and Delisle:

 

[Rascacielo]

Today

 

[UtakataNoAnnex]

I’m surprised at how small tuned mass dampeners can be! I just have the image of Taipei 101’s TMD engrained in my head I guess.

But you’re telling me that little box can help offset 300m+ of sway!

1) I think it would be pretty big if you stood right next to it.

2) Since they are likely still assembling the thing, it still might get bigger yet.

Taipei 101's TMD is smaller than you may think.

3) It weight picted appears to be suspended in a fairly large apparatus though. While I believe the one here is more or less a standalone.

 

[nightstreak]

3) It weight picted appears to be suspended in a fairly large apparatus though. While I believe the one here is more or less a standalone.

No, that's the whole thing. It looks much bigger in photos but in person or in a photo with a guy on top, it's surprisingly small. It's just very dense.

The beams were eventually removed once it was all assembled. It kind of just hangs there freely under its own weight, swaying with the building and pushing it in the other direction. The One's TMD is less flashy but will accomplish the same thing. I do wonder what it's like to be in the building now, without that counter weight. Must make having lunch up there an unsettling experience for workers.

 

[Johnny Au]

December 14, 2025:

Sir Winston Churchill Park:

 

[Collingwoodbuildinglover]

So I'm going to say that we should see the remaining RCS removed by the end of January

 

[interchange42]

No, that's the whole thing. It looks much bigger in photos but in person or in a photo with a guy on top, it's surprisingly small. It's just very dense.

View attachment 703300

The beams were eventually removed once it was all assembled. It kind of just hangs there freely under its own weight, swaying with the building and pushing it in the other direction. The One's TMD is less flashy but will accomplish the same thing. I do wonder what it's like to be in the building now, without that counter weight. Must make having lunch up there an unsettling experience for workers.

When the media was up there several months ago for the 300m celebration, there was no noticeable sway. There was also no wind. When we went up Pinnacle's SkyTower more recently for the 100 storeys celebration, there was no noticeable sway. There was some wind.

42

 

[UtakataNoAnnex]

No, that's the whole thing. It looks much bigger in photos but in person or in a photo with a guy on top, it's surprisingly small. It's just very dense.

I am including the apparatus in this as what makes this whole thing work as fa as I am aware.

...it should also be noted that I suspect that the thing is designed like that as it deals with more extreme conditions from earthquakes and typhoons in that region. While that would be much less of a problem here at One Bloor W..

 

[interchange42]

I am including the apparatus in this as what makes this whole thing work as fa as I am aware.

...it should also be noted that I suspect that the thing is designed like that as it deals with more extreme conditions from earthquakes and typhoons in that region. While that would be much less of a problem here at One Bloor W..

Seismic attenuation in buildings starts below ground level though, so while a TMD would play some role in an earthquake, more is going on down below to keep everything up in the air during an earthquake, including that TMD!

42

 

[nightstreak]

When the media was up there several months ago for the 300m celebration, there was no noticeable sway. There was also no wind. When we went up Pinnacle's SkyTower more recently for the 100 storeys celebration, there was no noticeable sway. There was some wind.

42

If you've ever had a chance to go to the bathroom in the CN Tower's SkyPod (unlikely as it's closed to regular visitors) you'll be met by a violently swishing toilet on windy days. If I recall, the CN Tower bends a mind-blowing 1 metre in either direction at the top. Don't ask me how I got the chance to see that.

 

[UtakataNoAnnex]

Seismic attenuation in buildings starts below ground level though, so while a TMD would play some role in an earthquake, more is going on down below to keep everything up in the air during an earthquake, including that TMD!

42

...thank you for that clarification then. /bows

 

[yyzfa]

Taken today from Galleria On The Park during sunset, the moody sky, the sun kiss, just all lined up.

 

[beepboop]

What I would give to see AI slop banned on here

 

[jer1961]

Photos taken today, Friday (Dec. 19). A chilly and very windy day... At the top, the mass dampener is somewhat visible from one of my shots from the west, the last one here. (That's what the dark shape is, isn't it?) Further down, the Rail Climbing Systems (RCSs) installing the building's skin have moved up since I posted a week ago on the east and north sides, now resting near the top of the last mechanical level, floor 78. The west one remains at 76, the south at 73.