[BoomOne]

Thanks for clarifying about the post tensioning system.

Wouldn't the slab thickness be more or less irrelevant to the height? The slabs don't take any more load than in a shorter building. Slab thickness is only really dependent on column spacing typically.

Agreed about the shear walls in this thing. Massive walls that are absolutely stuffed with gigantic bars and post tensioning. Never seen anything like it tbh.

Thicker slabs will help lateral sway (will help tie in all the walls columns), forgot to mention higher MPA concrete for all the walls and columns. There's also 5-6 walls that are tied into the main elevator/stair core that will help with swaying.

Not an engineer though, just a trade on site.

 

[Collingwoodbuildinglover]

Thicker slabs will help lateral sway (will help tie in all the walls columns), forgot to mention higher MPA concrete for all the walls and columns. There's also 5-6 walls that are tied into the main elevator/stair core that will help with swaying.

Not an engineer though, just a trade on site.

Thank you for the insight into this building, that is absolutely awesome. Hope you're having fun at work

 

[SKULL_KRUSHER]

Thicker slabs will help lateral sway (will help tie in all the walls columns), forgot to mention higher MPA concrete for all the walls and columns. There's also 5-6 walls that are tied into the main elevator/stair core that will help with swaying.

Not an engineer though, just a trade on site.

When you say "tied into the main elevator/stair core" do you mean there are drop beams connecting these outer walls to the main core? Cause then you're right; this would definitely help with swaying.

Thicker slabs can help with buildings that have large diaphragms and therefore big distances between lateral support points (i.e. core walls). But in a building like this that has such a densely packed floor plate I wouldn't expect the slab to need to be very thick to transmit the loads to the core. Especially if there are drop beams. But I haven't looked at the drawings myself, so you might know better than me what the intended load path is.

Just out of curiosity, what MPa concrete are they using for the walls and columns? I've heard of 80+ MPa concrete being used in some extremely tall builds.

 

[The Preservationist]

I would remind everyone to be careful about providing specific construction details. BoomOne has given us a lot of general information without crossing the line where an employer might be concerned. Thanks Boomone for what you have been able to share.

 

[Acheesestring]

When you say "tied into the main elevator/stair core" do you mean there are drop beams connecting these outer walls to the main core? Cause then you're right; this would definitely help with swaying.

Thicker slabs can help with buildings that have large diaphragms and therefore big distances between lateral support points (i.e. core walls). But in a building like this that has such a densely packed floor plate I wouldn't expect the slab to need to be very thick to transmit the loads to the core. Especially if there are drop beams. But I haven't looked at the drawings myself, so you might know better than me what the intended load path is.

Just out of curiosity, what MPa concrete are they using for the walls and columns? I've heard of 80+ MPa concrete being used in some extremely tall builds

The walls and columns range from 80-85 MPa depending on whether or not post-tensioning is present in the wall.

I would remind everyone to be careful about providing specific construction details. BoomOne has given us a lot of general information without crossing the line where an employer might be concerned. Thanks Boomone for what you have been able to share.

I can answer some structural questions if anyone is curious, on the hope that my username (not affiliated with Black Diamond) can keep me anonymous .

 

[mburrrrr]

I hate reposting this kind of stuff but hopefully they catch the guy.

From a blogTO story today.

Posted July 12 but probably taken on Sunday April 16 6-7 pm based on the sky, sun, traffic, CIBC Square and Skytower construction progress.

Edited. Removed some promotion of this.

Good luck Pinnacle.

 

[DSCToronto]

I hate reposting this kind of stuff but hopefully they catch the guy.

People do these stupid things to get attention. Not sure it helps to post their pics - even if you hate doing it.

 

[mburrrrr]

Edit Done.
Good idea.
Now you have to remove my quote.

 

[officedweller]

Here's what's in the core at Vancouver House - the lop-sided tower in Vancouver:

From Glotman-Simpson twitter:

Feb 8th:

https://twitter.com/GlotmanSimpson

March 17th:

https://twitter.com/GlotmanSimpson

 

[C-mac]

I hate reposting this kind of stuff but hopefully they catch the guy.

From a blogTO story today.

Posted July 12 but probably taken on Sunday April 16 6-7 pm based on the sky, sun, traffic, CIBC Square and Skytower construction progress.

Edited. Removed some promotion of this.

View attachment 492093

View attachment 492094
Good luck Pinnacle.View attachment 492096

One these guys died recently in Toronto doing this and now his parents are using his story to try and deter other young thrill seekers from doing the same.

 

[SKULL_KRUSHER]

Here's what's in the core at Vancouver House - the lop-sided tower in Vancouver:

That's mad wicked rebar! I guess that's what you get when you build a lopsided tower in a high seismic zone. If I was the engineer on that project I would've been looking at the architects like they're crazy.

 

[Undead]

Today from the train:

 

[BoomOne]

When you say "tied into the main elevator/stair core" do you mean there are drop beams connecting these outer walls to the main core? Cause then you're right; this would definitely help with swaying.

Thicker slabs can help with buildings that have large diaphragms and therefore big distances between lateral support points (i.e. core walls). But in a building like this that has such a densely packed floor plate I wouldn't expect the slab to need to be very thick to transmit the loads to the core. Especially if there are drop beams. But I haven't looked at the drawings myself, so you might know better than me what the intended load path is.

Just out of curiosity, what MPa concrete are they using for the walls and columns? I've heard of 80+ MPa concrete being used in some extremely tall builds.

There aren't many drop beams, only 5 on this current floor that tie into the core (you can probably see them with a powerful enough lens) and they aren't too deep for the lower height floors.

Yes all the walls/columns are 80+ MPa.

I would remind everyone to be careful about providing specific construction details. BoomOne has given us a lot of general information without crossing the line where an employer might be concerned. Thanks Boomone for what you have been able to share.

I know I maybe already toeing the line but there will be no pictures or any true insider info from me.

 

[Jeff Morgan]

A lot of concrete flowing today!

 

[wmedia]

Just now. The tower is growing and my view is slowly disappearing, although it's not a great loss in that direction.