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Supertalls Discussions of projects under construction between 300-599m/1,000-1,999ft tall.
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Old May 22nd, 2016, 06:32 PM   #1901
surfnasi
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Should not be to long before the installation of the glass facade begins
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Old May 22nd, 2016, 11:41 PM   #1902
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Brother and sister rising (today):


From Salesforce Tower webcam

I count they are working on the 22nd floor concrete and the 17th floor steel on Salesforce. On 181 Fremont they are doing the "amenities" floors for the condos which are more complex than other floors.
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Old May 23rd, 2016, 01:13 AM   #1903
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Judging by the above pics, we should start seeing some cladding come on very soon now.
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Old May 23rd, 2016, 01:34 AM   #1904
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And just a refresher of what that should look like:


http://www.sfhog.com/transbay-tower-teaser-spotted/

http://www.sfhog.com/transbay-tower-teaser-spotted/
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Old May 27th, 2016, 11:46 AM   #1905
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@SalesforceTower


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Old May 31st, 2016, 05:22 AM   #1906
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It's going up quickly ! 🏻
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Old May 31st, 2016, 03:01 PM   #1907
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Aggressively running to the skies!
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Old June 1st, 2016, 12:34 PM   #1908
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I went down there today and counted floors: 19 of steel, 24 of concrete (the core). That's nearly ⅓ the way to the roof (if not the top of the crown).
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Old June 3rd, 2016, 03:31 AM   #1909
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Stacks of what could be glass cladding panels on the 2 floors that have been fire-proofed which is where we should see glass installed first:


http://www.salesforcetower.com/cam
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Old June 4th, 2016, 12:30 PM   #1910
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Old June 4th, 2016, 09:25 PM   #1911
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The rounded corners are very nice. Not every skyscraper has to have sharp edges.
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Old June 7th, 2016, 10:54 AM   #1912
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San Francisco Salesforce tower construction by Chris Clogg, en Flickr
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Old June 8th, 2016, 07:38 PM   #1913
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I like how the Salesforce tower is included in the new Watch_dogs 2 game.
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Old June 8th, 2016, 08:09 PM   #1914
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I also like round corners on tall buildings.

A question: how much does shadow projections, or blocking of far away sight lines, enter the day-to-day street discussions of tall buildings in San Francisco in general? Was this an issue on the Salesforce project?
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Old June 9th, 2016, 05:48 AM   #1915
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Quote:
Originally Posted by Suburbanist View Post
I also like round corners on tall buildings.

A question: how much does shadow projections, or blocking of far away sight lines, enter the day-to-day street discussions of tall buildings in San Francisco in general? Was this an issue on the Salesforce project?
Absolutely it was an issue. It cut the height of the building by 200 ft (approx). San Francisco has an ordinance barring any new building from casting a significant shadow on public open space such as plazas and parks.

Note the building on the far right of this photo:



Notice how much shorter it is than other buildings in the area. That was a voluntary concession (voluntary because the "park" at issue didn't yet exist) by the developer so as not to shade the future rooftop park on the TransBay Transit Center.

Quote:
Transbay plan bumps into 'sunlight ordinance'
By John Coté Published 4:00 am, Sunday, November 22, 2009

Redrawing San Francisco's skyline could come down to sunlight and shadows.

The proposal that city planners recently unveiled to allow seven new skyscrapers near a rebuilt Transbay Terminal, including one that would crown a changed skyline, appears to have at least one problem - a 1984 voter-approved initiative that protects sunlight for city-owned parks and open space.

Proposition K, the "Sunlight Ordinance," blocks construction of any building over 40 feet that casts an adverse shadow on Recreation and Park Department property unless the Planning Commission decides the shadow is insignificant.

The proposed high-rises would shade at least two protected downtown plazas and could shadow at least two others - Justin Herman Plaza along the Embarcadero and parts of Union Square.

Planning officials say the benefits of what is now being proposed, including a new 5.4-acre rooftop park on a rebuilt Transbay Terminal, are worth weighing against the harm to existing open space.

But those who fought the "Manhattanization" of San Francisco in the 1970s and 1980s argue that the Planning Department is trying to quietly undercut the will of voters . . . .

Still, on the same day the department released its plan for a 145-acre zone south of Market Street last week, it also presented the Planning Commission with proposed modifications to the city rules that Prop. K established.

Planners called the timing coincidental and said the proposed modifications are technical tweaks to standardize shadow evaluations and bring updated computer modeling to a decades-old process.

Critics say it's a maneuver to get approval for high-profile projects that violate city codes, like a signature 1,000-foot tower at the Transbay Terminal site, where the current height limit is 550 feet.

City planners note that increasing height limits to allow for seven skyscrapers will require a lengthy approval process culminating at the Board of Supervisors.
Also, the modifications to the shadow rules wouldn't change the limits already established for parks and will result in "minor corrections" to how shade from proposed buildings is measured, said Craig Nikitas, a senior city planner.
If approved, the changes won't apply to projects already in the application pipeline, Nikitas said, including the controversial plan to build a 425-foot condominium tower at 555 Washington St. by the Transamerica Pyramid on a site with a 200-foot height limit . . . .

Prop. K led to shadow limits for 14 parks from Civic Center to North Beach, with no new shadows permitted for 11 of those, although the Planning and Recreation and Park commissions have voted to change those restrictions in select cases.

City planners acknowledge the tallest of the proposed skyscrapers would shade St. Mary's and Portsmouth squares, both zero-new-shadow parks, for about an hour a day in the spring and fall. As an offset, the development plan calls for $10 million in upgrades to the parks.

The same buildings could also shade Justin Herman Plaza during peak lunchtime hours in December and January. With the proposed signature tower at 1,000 feet, its shadow would mostly clip the edges, said planners . . . .(at the originally proposed 1200 feet, though, the impact would have been more substantial)
http://www.sfgate.com/bayarea/articl...ce-3209060.php

Sight lines are a different issue. Many homeowners with $100,000+ views (in SF, a view can add that much or a lot more to the value of a property) have gone to court to block a project that would block the views, but the courts have consistently said there's no legal right to (or property interest in) a view. So you can't get a legal judgement when your is blocked. On the other hand, city Planners do take public sight lines such as down streets into consideration when reviewing projects.

Another factor you didn't mention is wind. These days, wind modeling can be crucial in the approval process for tall buildings and several currently on the drawing boards have been required to have extensive redesigns ( ad some have been blocked) so that they didn't noticeably increase wind velocities at sidewalk level. I know of 2 locations where buildings put up in the 1960s cause near-hurricane force winds on the sidewalks next to them making it hard to walk upright.
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Last edited by Cal_Escapee; June 9th, 2016 at 05:57 AM.
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Old June 9th, 2016, 10:57 AM   #1916
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Old June 13th, 2016, 11:58 AM   #1917
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1st Street by Sergio Ruiz, en Flickr

Howard Street by Sergio Ruiz, en Flickr
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Old June 15th, 2016, 11:23 AM   #1918
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Old June 15th, 2016, 03:35 PM   #1919
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they must be setting a new record for construction speed!
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Old June 15th, 2016, 07:42 PM   #1920
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9 floors in a month is indeed outstanding! Btw, the cladding is progressing very fast on 181 Fremont too
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