SLC: Performing Arts Center and 111 Tower

[Orlando]

Originally Posted by Stenar

Only half of the lobby doesn't have supports.

Well, whether its half or all, that portion of the lobby with no supports plus the portion above 111 definitely seems to be more than 1/3. I'm just sayin' that if 1/3 of the building is cantilevered, I'm not sure how they are able to achieve cantilevering both over EPAC and over that portion of the glass lobby.

[Stenar]

Originally Posted by Orlando

Well, whether its half or all, that portion of the lobby with no supports plus the portion above 111 definitely seems to be more than 1/3. I'm just sayin' that if 1/3 of the building is cantilevered, I'm not sure how they are able to achieve cantilevering both over EPAC and over that portion of the glass lobby.

I'm not an architect. So, I don't know, but this is what I'm seeing from the renderings. This is a gross oversimplification and sizes are nowhere near exact. I think I drew the open lobby too large.

[SLC Projects]

111's core looks like it's gotten a little bit higher this time around after driving pass the site today.

[EPdesign]

Originally Posted by Stenar

I'm not an architect. So, I don't know, but this is what I'm seeing from the renderings. This is a gross oversimplification and sizes are nowhere near exact. I think I drew the open lobby too large.

I stand corrected. I'll pay attention to the detail when I drive by after work

[ToysNoiz]

Here's a pic from an instagram user.

[Future Mayor]

Originally Posted by Stenar

I'm not an architect. So, I don't know, but this is what I'm seeing from the renderings. This is a gross oversimplification and sizes are nowhere near exact. I think I drew the open lobby too large.

I think you're pretty spot on, as far as the general idea goes. I'm guessing from the architects renderings though that the three supports you have on the north wall and the one on the west wall might not be there. As it appears that the entire front of the building on the ground level is slightly set back from the upper floors.

[Stenar]

Originally Posted by Future Mayor

I think you're pretty spot on, as far as the general idea goes. I'm guessing from the architects renderings though that the three supports you have on the north wall and the one on the west wall might not be there. As it appears that the entire front of the building on the ground level is slightly set back from the upper floors.

I thought the north wall was set back at first, but when I zoomed into the photo and looked carefully, it looks to me like the wood screen comes within 2 or 3 feet of the glass and below that in the white area is the entrance to the retail area. So, I'm pretty sure the diagrams is fairly accurate. If the north wall is set back, it doesn't seem like it would be more than 5-6 feet back.

[SLC Ute]

Originally Posted by Stenar

It's a much discussed fact on this forum.

But there's also this: "Skidmore Owings & Merrill, the international architecture firm behind 222 Main, had designed a state-of-the-art hat truss for 111 Main that will allow them to build 21,000-square-foot floors on a 17,000-square-foot footprint, using a cantilever system that will essentially support a third of the weight from the roof, Bingham said."

Source: http://www.sltrib.com/sltrib/money/56945533-79/main-salt-building-office.html.csp

The article you reference has an image that clearly demonstrates the 1/3 of the building that is cantilevered. The problem with that article is that it is from 2013, when the design of the building looked something like this:


Source: http://www.sltrib.com/sltrib/money/56945533-79/main-salt-building-office.html.csp

Which clearly has ground level columns that are no longer included in their updated designs. As seen below:



Source: www.111mainslc.com

[SLC Ute]

Originally Posted by Stenar

I'm not an architect. So, I don't know, but this is what I'm seeing from the renderings. This is a gross oversimplification and sizes are nowhere near exact. I think I drew the open lobby too large.

Here is a different angle of the lobby.



Source: www.111mainslc.com

Correct me if I'm wrong, but I do not see any columns.

Also, the website is advertising a column-free design on EACH floor... Until I see ground-level columns in place, I am standing by my assumption that it will be supported from the roof.

[Orlando]

Originally Posted by Stenar

I'm not an architect. So, I don't know, but this is what I'm seeing from the renderings. This is a gross oversimplification and sizes are nowhere near exact. I think I drew the open lobby too large.

Nice diagram Stenar. Though, I don't think there are columns along 1st South, and that definitely shows way more than 1/3 of the floor space column free. But, anyways, the whole idea of having that lobby column free is amazing in itself. To me, that is the most impressive part of this tower design. There's a tower here in Seattle that rises up from a central core. I think it's called the Rainier building. Anyways, it is really sketchy looking, and it seems to defy gravity. It looks like a regular 40-story office building supported on a mushrooming 10-story podium of about 1/3 its perimeter area.

[T-Mac]

Taken this evening.

[justiny]

Thank you T-Mac! Awesome as always!

[Highrise_Mike]

Love the pics! Thanks for posting them.

[jedikermit]

T-Mac yay!!

*confetti*

[EPdesign]

Unless there are columns that are still below ground level. I don't see how the columns on the north side of the UPAC are thick enough to support the volume or weight that is going to be supposedly placed on them. They would not only have to support the cantilever over the upac but also the the structure of ever the lobby. Are we sure these columns are going to support or help support the structure?

[Stenar]

Originally Posted by EPdesign

Unless there are columns that are still below ground level. I don't see how the columns on the north side of the UPAC are thick enough to support the volume or weight that is going to be supposedly placed on them. They would not only have to support the cantilever over the upac but also the the structure of ever the lobby. Are we sure these columns are going to support or help support the structure?

EPAC is not going to support 111 Main in any way.

[Orlando]

Tmac, welcome back!

Stenar, how do you know that?

[jtrent77]

Originally Posted by Orlando

Tmac, welcome back!

Stenar, how do you know that?

To me it makes a whole lot more sense that EPAC isn't supporting 111. If EPAC were supporting 111 in anyway, I would think that the elevator shaft would be placed more to the north to balance out the weight that it is ultimately supporting via the roof. By putting the elevator shaft directly in the center of the tower (accounting to the dimensions above the ceiling of EPAC, not those simply at ground level) it makes the building symmetrical as it relates to the elevator shaft and thus puts equal weight around rather than having unequal weight which, to me as a non-architect, would seem to weaken the structure rather than strengthen it.

Thus ultimately, the placement of where the shaft is now makes me believe that 111 will be cantilevered over EPAC but won't be physically supported by it.

[DMTower]

Originally Posted by Orlando

Tmac, welcome back!

Stenar, how do you know that?

They've said many times over the course of the design phase, and now construction, that they don't intend for the tower to be supported by EPAC.

[T-Mac]

November 2010



January 2015