How about building in any of the areas not in green?

I think the City Hall/ Market/ Van Ness/ Upper Market Castro would have been a great place for the tallest buildings (outside of the green zone of course). It would look great up against Twin Peaks as a backdrop. It also has MUNI and BART access.

SF hasn't had a major quake like in 06 and there was nothing near what the financial district is now. Imagine the 06 quake today, or worse.

http://i.imgur.com/5oTmnMR.jpg

That ship has sailed over a century ago.

https://en.wikipedia.org/wiki/1989_L...eta_earthquake

It might not have been as powerful a the 1906 earthquake but a 6.9 is pretty damn serious.

https://app.oxblue.com/open/clarkconstruction/parktower

The construction cam was moved. Great view of 181 Fremont and SFT as well.

^ great view! Is it from the 2nd Lumina tower? They need to straighten the camera a bit.

Yes! You were right on the money! They put in supports and are now excavating downwards.


http://i1042.photobucket.com/albums/...psxu5r0hqo.jpg

Excavation continues

http://i1042.photobucket.com/albums/...psnlbi7ge7.jpg

Did we ever verify if the foundation was drilled into bedrock on this project?

I couldn't find anything that says one way or another for sure, but I did find this engineering report (p. 105) from Arup when the RFP went out in 2013:

According to this (p. 50), the building will have a concrete core and have concrete floors up to level 12, after which it will be steel. So, it will be somewhere between the two scenarios, probably closer to the light steel tower. Drilling to bedrock is probably not required, but we won't know for sure unless Clark Construction tells us.

The excavation continues. They seem to be welding more steel around the edges. I'm curious if they're going to go down another floor.

http://i1042.photobucket.com/albums/...psyyxxzivx.jpg

I'm eager to see this one start rising and completed. :cheers:

Someone once said "You must go down before you can go up."

Actually, nobody ever said that, but I did take another picture.

http://i1042.photobucket.com/albums/...pskszyhztl.jpg

I think that is a Donald Trump quote.

Its a line from a brilliant episode of Veep. Awesome photo. Thanks!

Updated picture from a few days ago.

http://i1042.photobucket.com/albums/...psbzx4xova.jpg

Why doesn't this building have a diagram? I was just wondering since it's already under construction and the designs probably won't change much

This may be as deep as they're planning to go with this one - now visible are the tops of the piles previously placed, with rebar protruding and ready to tie in to the basement levels. Plus it looks like they are down far enough to accommodate the three planned levels of underground parking.

It would be a pleasant surprise to see Park Tower up and out of the ground by the end of this year or very early 2017 - and it will be nice to have it, along with Blocks 8 & 9, to tide us over as Salesforce and 181 wrap up and until 50 First and Parcel F get underway.

Agreed. My office mates agree that this looks to be about as deep as they're going to go. Just today, they started laying a grid of rebar between some of those piles.

Let's hope they were drilled down into bedrock!

I spy the beginnings of a crane.

http://i1042.photobucket.com/albums/...psntxyzdod.jpg

on the webcam it looks like the crane is being assembled

10/29/16

https://pbs.twimg.com/media/Cv84SUTUEAACVhT.jpg:medium

^ looks like they're ready to go vertical.

crane from ground level

https://c4.staticflickr.com/6/5804/3...f5d96bf7_b.jpg

I wonder how long it will take my down photos to become up photos.

Here's a picture with the crane now in place

http://i1042.photobucket.com/albums/...pswsvkvvwp.jpg

More foundation work going on.

http://i1042.photobucket.com/albums/...psbktdyuwh.jpg

mat pour today

I'm assuming this will be steel frame, since a concrete frame of this size not anchored to bedrock could be Millennium v2.

from 2 months ago

12/01/16

https://c2.staticflickr.com/6/5712/3...9ff73f95_k.jpg2016-12-01 14.18.08 by Joshua Goldstein, on Flickr

Foundation pour. 12/03/2016
https://flic.kr/p/NC9kZo
https://flic.kr/p/NDooGx

Photo from after the pour

https://c8.staticflickr.com/6/5761/3...ce8e11df_k.jpg2016-12-05 12.47.00 by Joshua Goldstein, on Flickr

this was street level on Saturday

https://c2.staticflickr.com/6/5613/3...9c53d020_b.jpg

Some of the rebar is above street level. The pier the red crane is on is also noticeably shorter.

https://c1.staticflickr.com/1/683/31...caa574d8_k.jpg2016-12-15 10.26.04 by Joshua Goldstein, on Flickr

Concrete pumping equipment is getting set up and you can pretty clearly see where the core is

https://c3.staticflickr.com/1/304/31...230386df_k.jpg2016-12-22 13.30.47 by Joshua Goldstein, on Flickr

The red crane is now gone.

https://c1.staticflickr.com/1/692/32...623334fb_k.jpg2017-01-11 12.18.25 by Joshua Goldstein, on Flickr

Is this one ready to start rising out of the ground yet?

Look at the photo--the rebar for the below ground walls and columns appears to reach street level so as soon as they pour them (this usually doesn't take too long after the rebar is in place) they will begin work on the floors. It looks like there will probably be one below ground floor and then the street level floor, following which they should go vertical again above ground. Best guess is that will happen in a couple of weeks.

Yes, since I work right next to it, I can confirm that there are some columns of rebar already sticking out above ground level. Here's the picture from today. They seem to be doing work on another subterranean level.

https://c1.staticflickr.com/1/692/32...fc73cf75_k.jpg2017-01-19 09.06.52 by Joshua Goldstein, on Flickr

According to Bisnow, this one should be topped off in November:

^ that's fast!

More progress on the lower levels

https://c1.staticflickr.com/1/750/32...e70a96db_k.jpg2017-01-26 12.32.58 by Joshua Goldstein, on Flickr

The supports for the side of the pit are gone and it looks like maybe they're starting work on the climbing formwork.

https://c1.staticflickr.com/1/556/32...2da64015_k.jpg2017-02-06 12.33.00 by Joshua Goldstein, on Flickr

1/24/17:

[IMG]https://c1.staticflickr.com/1/443/32...6c58a6a7_b.jpgPark Tower is just coming out of the ground in front by viewguysf, on Flickr[/IMG]
https://c1.staticflickr.com/1/404/32...7078ce1f_b.jpgPark Tower construction site by viewguysf, on Flickr

Progress on the basement levels

https://c1.staticflickr.com/3/2085/3...4d05f94f_k.jpg2017-02-16 13.08.22 by Joshua Goldstein, on Flickr

https://c1.staticflickr.com/1/578/32...8a5279e9_k.jpg2017-02-24 15.55.43 by Joshua Goldstein, on Flickr

Looks like they could soon be pouring the ground floor:

https://im1.shutterfly.com/media/47a...D720/ry%3D480/
Screen grab: https://app.oxblue.com/open/clarkconstruction/parktower

Pedestrian, this is another view, if you haven't seen this before:

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

^^No, hadn't seen it. Thanks.

Wish I really understood how they get those big pipes they brace the foundation with out of the hole after they pour floors above them.

https://c1.staticflickr.com/4/3927/3...c5ccd497_k.jpg2017-03-03 09.21.30 by Joshua Goldstein, on Flickr