SAN FRANCISCO | Park Tower at Transbay | 605 FT | 43 FLOORS

[iamfishhead]

Originally Posted by Pedestrian

^^And you bought a new camera just for us? What I notice, aside from your vantage point, is how sharp and clear the photos are. Impressive.

No. Just happened to get a new smartphone right around that time.

[iamfishhead]

You can just see the second floor starting

2017-03-23 13.44.14 by Joshua Goldstein, on Flickr

[Pedestrian]

^^I have to admit to a little disappointment. I was hoping above ground it would be steel framed so it would go up quickly (because it is all-office) but it appears it's going to be reinforced concrete framed.

[mt_climber13]

^That's surprising and potentially disastrous if true, because if I recall this isn't bolted to bedrock and is about the same height as Millennium. The reason Millennium is sinking and tilting is because of the weight of its concrete frame coupled with it not being bolted to bedrock and compacting all the sand and landfill underneath.

[iamfishhead]

I think I read the first 10-12 floors are reinforced concrete. The rest will be steel framed.

[pseudolus]

Originally Posted by wakamesalad

^That's surprising and potentially disastrous if true, because if I recall this isn't bolted to bedrock and is about the same height as Millennium. The reason Millennium is sinking and tilting is because of the weight of its concrete frame coupled with it not being bolted to bedrock and compacting all the sand and landfill underneath.

"Park Tower at Transbay’s foundation, which was just poured a few months ago, has caissons anchored into 25 feet of bedrock and has 11,000 cubic yards of concrete, making it one of the deepest foundations of any building in San Francisco."

https://www.bisnow.com/san-francisco...-skyline-69516

[viewguysf]

Originally Posted by peanut gallery

This was approved by the Planning Commission, and thus received its Prop M allotment, last week. The SF Business Times also has some additional details:

• They list it at 45 floors, but that includes two mechanical floors.
• It will have a concrete core.
• The first 12 floors will be concrete.
• Above that will be steel.
• 2 retail spaces: 4344 sq ft and 4298 sq ft.

Plus they include this updated rendering of the upper level patio spaces:



They now expect to start in November for a 2018 completion.

Here's Peanut's posting from 7/13/15 that addresses the concrete and steel floors. I miss his presence here.

[mt_climber13]

Originally Posted by pseudolus

"Park Tower at Transbay’s foundation, which was just poured a few months ago, has caissons anchored into 25 feet of bedrock and has 11,000 cubic yards of concrete, making it one of the deepest foundations of any building in San Francisco."

https://www.bisnow.com/san-francisco...-skyline-69516

Good to know, seems like the foundation work was a lot quicker than Salesforce's

[simms3_redux]

Originally Posted by Pedestrian

^^I have to admit to a little disappointment. I was hoping above ground it would be steel framed so it would go up quickly (because it is all-office) but it appears it's going to be reinforced concrete framed.

It is only the lower tier (larger floorplate) of floors that will be concrete construction. They were only able to handily beat the competition for the land to build this tower because they figured out a way to increase rentable square footage, and in so including a mixture of concrete and steel frame, they worked out a deal with the city in the process to increase the allowable height of the lower tier and add a floor or two to the section with the larger floorplates.

If memory serves, the city wanted them to include an expensive feature (fire protection I believe) that needed some engineering, which led to concrete base, which also led to the request for variance to setback requirements to increase height, and thus square footage, leading to a really high land price and a cleanly executed, rapidly expedited deal.

[david_h]

Ground floor poured, now moving on up...

[Pedestrian]

^^Yes, it looks like they have plywood forms up now for about ⅓ of the 2nd floor (no rebar yet, though).

[iamfishhead]

More work on the second floor, as you can see. Also, several columns are starting to take shape.

2017-03-30 14.02.50 by Joshua Goldstein, on Flickr

[edwards]

04/05/2017

The core of this thing is almost as massive as Salesforce Tower's:

[Pedestrian]

^^Those tall columns on the southwest corner appear to be for a 3-story lobby on that corner.

[iamfishhead]

More work on the first floor

2017-04-10 10.43.28 by Joshua Goldstein, on Flickr

[Pedestrian]

Looks like they made a pour today:


Screen grab: https://app.oxblue.com/open/clarkconstruction/block5

[pseudolus]

Originally Posted by Pedestrian

Looks like they made a pour today:


Screen grab: https://app.oxblue.com/open/clarkconstruction/block5

The prior floor was done in two steps, on March 17 and 22. They're not setting any speed records here.

[iamfishhead]

Yep. They're pouring today.

2017-04-12 14.05.41 by Joshua Goldstein, on Flickr

[Pedestrian]

Originally Posted by pseudolus

The prior floor was done in two steps, on March 17 and 22. They're not setting any speed records here.

Maybe no records but not dawdling either. They've already got forms up for at least ½ the third floor. For the second floor it took them about 12 days from this point to having it poured and finished. I expect them to do the third floor in that time or less. And remember, this is the podium they are working on--when they finish that and are working on just the tower it will go faster.

[chris08876]

This is hauling. Some good progress made in the last couple of weeks.