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Sinking San Francisco building

Mike95060 said:
Do tenants get relocated during projects like this? Imagine if someone fucked up and there was a collapse with people living there. Yikes.
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Someone go up to the top floor and tell Joe to gather his shit. LOL
 
Mike95060 said:
Do tenants get relocated during projects like this? Imagine if someone fucked up and there was a collapse with people living there. Yikes.
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That's up to the city. If SF red tags the building, you bet they get relocated. I've seen one inspector close down a 30,000 square foot structure. :laughing

The city will issue a permit for the work to be done and make a call at that point. Depending on how far, if at all, the subsidence has proceeded, they may or may not. I would doubt that they will move anyone unless the building is declared a hazard. If that happens, there's going to be hell to pay for the neighbors as well.
 
afm199 said:
That's up to the city. If SF red tags the building, you bet they get relocated. I've seen one inspector close down a 30,000 square foot structure. :laughing

The city will issue a permit for the work to be done and make a call at that point. Depending on how far, if at all, the subsidence has proceeded, they may or may not. I would doubt that they will move anyone unless the building is declared a hazard. If that happens, there's going to be hell to pay for the neighbors as well.
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Where the fuck are they gonna relocate to? We're in something of a housing shortage as it is and I'm pretty sure someone living in a $3m apartment isn't going to settle for some old creaky leaky rent controlled $800/month SF apartment.
 
NorCalAthlete said:
Where the fuck are they gonna relocate to? We're in something of a housing shortage as it is and I'm pretty sure someone living in a $3m apartment isn't going to settle for some old creaky leaky rent controlled $800/month SF apartment.
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Can you imagine that shit storm?
 
NorCalAthlete said:
Where the fuck are they gonna relocate to? We're in something of a housing shortage as it is and I'm pretty sure someone living in a $3m apartment isn't going to settle for some old creaky leaky rent controlled $800/month SF apartment.
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??? :wtf

to their *other* pied-a-terr of course.
 
Well I think once again it needs to be reminded that the building is declared safe to use... *still* . That's what was written in a few of the articles.

In the latest NYTimes article they also have a portrait (literally, too) of the rolling-marble people, at least one of them is retired.

I don't know how all of this building and construction started happening so fast in the recent years, or is it just me.

I think it's gotta be obvious some corners have been cut here or there. Heck it might start looking like a chicken-and-egg problem at some point!!!
 
NorCalAthlete said:
Where the fuck are they gonna relocate to? We're in something of a housing shortage as it is and I'm pretty sure someone living in a $3m apartment isn't going to settle for some old creaky leaky rent controlled $800/month SF apartment.
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It's highly unlikely that will happen. Only way will be if that building has a lot more subsidence.

If it does, it will get tagged. Nobody cares where they will go. :laughing
 
DTM74 said:
http://phys.org/news/2016-11-sentinel-satellites-san-francisco-millenium.html

A little help from space. Sinking at a rate of just about 2"/year.
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Sounds like someone trying to drum up work for their expensive satellites.
You don't need to go into space to measure the lean or the settlement of that thing.
Simply mount a prism at the top and another near the bottom. Shoot them with a total station every week or two and compare movement relative to each other and to a few fixed control points on ground.
It will accurately measure any movement within a few mm. No need for rocket science.
 
yeah, 10/4. I thought it was a bit over the top too, but interesting. Pretty impressive what those satellites can pick up...spot of landing rising in Pleasanton, some subsidence in San Rafael Bay
 
Every workday, I look across the street at the Tower and wonder... When? :laughing
 
NorCalAthlete said:
Where the fuck are they gonna relocate to? We're in something of a housing shortage as it is and I'm pretty sure someone living in a $3m apartment isn't going to settle for some old creaky leaky rent controlled $800/month SF apartment.
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airbnb


duh :twofinger
 
Blankpage said:
Sounds like someone trying to drum up work for their expensive satellites.
You don't need to go into space to measure the lean or the settlement of that thing.
Simply mount a prism at the top and another near the bottom. Shoot them with a total station every week or two and compare movement relative to each other and to a few fixed control points on ground.
It will accurately measure any movement within a few mm. No need for rocket science.
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The problem with fixed ground points is that the entire neighborhood is fill. You can't be sure what fixed means. (We have houses in Oakland and Berkeley that have moved 2-3 feet downhill in their entirety)
 
afm199 said:
The problem with fixed ground points is that the entire neighborhood is fill. You can't be sure what fixed means. (We have houses in Oakland and Berkeley that have moved 2-3 feet downhill in their entirety)
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Houses in the Berkeley or Oakland hills sure. But there isn't anything shifting horizontally 2-3 feet in downtown SF. Especially other buildings sitting on pile driven into bedrock. Those buildings are not moving and would make a suitable location to mount a benchmark. Check into another benchmark mounted to a different building a block away and you have a solid reference to monitor settlement of this sinking tower.

For monitoring lean no ground control points needed. You simply measure the top of tower movement relative to the base of the tower.

Like I mentioned this is the sort of shit I used to get involved with.
 
afm199 said:
The problem with fixed ground points is that the entire neighborhood is fill. You can't be sure what fixed means. (We have houses in Oakland and Berkeley that have moved 2-3 feet downhill in their entirety)
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There are numerous methods that could be used. San Francisco has a bunch of places of elevation that have bedrock close to the surface that are in line of site of the tower.
 
Bring one of these to the top, mount it on an embedded bolt and let it collect data for 20 minutes. No ground control points needed.

IMG_0829.JPG
 
Sat imagery and verification carries a lot more weight in court than conventional ways and will be more convincing to a jury during the class action law suit.
 
I bet a licensed land surveyor carries more weight than satellite imagery.
A gps rtk rover is accurate to 10mm. A total station +-2mm.
There's a lot of processing to get meaningful yet much less accurate data from satellite imagery.
A jury giving it more weight than conventional methods is a jury that's easily impressed with shiny things.
 
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