Sinking to new lows

Feuer Frei! · 08-02-16, 07:05 AM

Quote:

The millenium Tower, located in Yerba Buena next to the Transbay and Salesforce Tower constructions has sunk 16 inches, according to an independent consultant hired to monitor the problem. It has also tilted 2 inches to the northwest.

SOURCE

Aug 1, 2016

Betonov · 08-02-16, 07:06 AM

I'm no construction engineer, but 40cm down and 10cm to the side is a recipee for a disaster.

Tango589 · 08-02-16, 07:35 AM

Quote:

Originally Posted by Betonov

I'm no construction engineer, but 40cm down and 10cm to the side is a recipee for a disaster.

Indeed, it sounds like the start of a whole lot of CRASH BANG WOLLOP. Also, after a 40cm. drop, how do they get the front door open?

Betonov · 08-02-16, 07:38 AM

Quote:

Originally Posted by Tango589

Indeed, it sounds like the start of a whole lot of CRASH BANG WOLLOP. Also, after a 40cm. drop, how do they get the front door open?

The front door ?? How come the steel beams havent buckled yet and failed

Cybermat47 · 08-02-16, 07:46 AM

Quote:

Originally Posted by Betonov

I'm no construction engineer, but 40cm down and 10cm to the side is a recipee for a disaster.

Yep. I'd say that it could be moving a lot more in the future

Jimbuna · 08-02-16, 07:59 AM

Certainly doesn't sound too good

Catfish · 08-02-16, 08:11 AM

Just wait and add some cellar apartments, you can then gradually build on, on top, to come to past famous heights again.
Of course you will have to shift the main entrance upwards..

Feuer Frei! · 08-02-16, 08:16 AM

One option is to pump cement under the building and construct new pilons.

As of yet after the 2014 safety rep[ort it seems all is A-OK.

Tell that to the owners of the appartments.

Jimbuna · 08-02-16, 08:18 AM

If I owned an apartment in that building I'd be checking and upgrading (if possible) my insurance cover with immediate effect.

Aktungbby · 08-02-16, 01:27 PM

Quote:

the 58 floor building was found to be sinking and tilting, perhaps as a result from developer cost-cutting by driving piles only 80 feet deep, and not 200 feet into bedrock. An examination in 2016 showed the building had sunk 16 inches with a two inch tilt towards the north west. The TJPA says the 60-story Millennium Tower is made of concrete rather than steel, "resulting in a very heavy building. This heavy structure rests on layers of soft, compressible soil. The foundation of the Tower, however, consists only of a concrete slab supported by short piles that fail to reach the bedrock below. That foundation is inadequate to prevent settlement of a building with the weight of the Tower." Instead of steel anchored on bedrock more than 200 feet down, it's made of concrete, sitting on a slab with pilings just 80 feet into the soil.

I watched this go in just a block from my 30 floor court bldg just South on Beale Street @ Mission. Old ships are still found buried in the mud around there (two blocks in from the Bay front) but the 'bedrock' is solid. I suspect that it will not become a leaning tower of Pisa. At 10' per floor: (when it 'hits the bedrock' 120 feet below

)...it will be a perfectly nice 46 floor building with 12 new basement levels!

https://en.wikipedia.org/wiki/Millennium_Tower_(San_Francisco)

08-02-16, 04:27 PM

Quote:

Originally Posted by Feuer Frei!

SOURCE

Aug 1, 2016

Why do I have the feeling we're going to see something spectacular, yet sad, on the news in the near future?

vienna · 08-02-16, 05:59 PM

An awful lot of the land on the Bay side of the San Francisco peninsula is reclaimed Bay landfill and, as noted by Aktungbby, some of the fill was done by beaching Gold Rush era ships and throwing rock and soil over the lot. I remember when they were building the Bay Area Rapid Transit (BART) subway system in the mid to late 60s, they did, indeed, find more than a bit of old ships, earthquake destroyed buildings, and other rubble as they dug the tunnels; there was much concern in the news reporting of the BART digs about the ultimate stability and safety of the tunnels. After the 1906 Great Earthquake, many buildings did, in fact, collapse when the land fill underneath them gave way. For the developers to cut corners and do such a shoddy job seems to give cause for possible criminal prosecution; the apartment owners are now certainly going to sue, civilly; aside from quite possibly losing their homes, even if the problems are fixed, the value of their holdings will be seriously diminished if they try to sell...

<O>

fireftr18 · 08-02-16, 08:20 PM

I'm not an expert, but do know a little something about building collapse. An unstable, tilting building is not good.

08-02-16, 07:59 AM	#6
Jimbuna Chief of the Boat Join Date: Feb 2006 Location: 250 metres below the surface Posts: 190,473 Downloads: 63 Uploads: 13	Certainly doesn't sound too good __________________ Wise men speak because they have something to say; Fools because they have to say something. Oh my God, not again!!

08-02-16, 08:11 AM	#7
Catfish Dipped Squirrel Operative Join Date: Sep 2001 Location: ..where the ocean meets the sky Posts: 17,765 Downloads: 38 Uploads: 0	Just wait and add some cellar apartments, you can then gradually build on, on top, to come to past famous heights again. Of course you will have to shift the main entrance upwards.. __________________ >^..^<*)))>{ All generalizations are wrong.

08-02-16, 08:16 AM	#8
Feuer Frei! Navy Seal Join Date: Sep 2009 Location: Valhalla Posts: 5,295 Downloads: 141 Uploads: 17	One option is to pump cement under the building and construct new pilons. As of yet after the 2014 safety rep[ort it seems all is A-OK. Tell that to the owners of the appartments. __________________ "History is the lies that the victors agree on"- Napoleon LINK TO MY SH 3 MODS

08-02-16, 08:18 AM	#9
Jimbuna Chief of the Boat Join Date: Feb 2006 Location: 250 metres below the surface Posts: 190,473 Downloads: 63 Uploads: 13	If I owned an apartment in that building I'd be checking and upgrading (if possible) my insurance cover with immediate effect. __________________ Wise men speak because they have something to say; Fools because they have to say something. Oh my God, not again!!

08-02-16, 05:59 PM	#12
vienna Navy Seal Join Date: Jun 2005 Location: Anywhere but the here & now... Posts: 7,711 Downloads: 85 Uploads: 0	An awful lot of the land on the Bay side of the San Francisco peninsula is reclaimed Bay landfill and, as noted by Aktungbby, some of the fill was done by beaching Gold Rush era ships and throwing rock and soil over the lot. I remember when they were building the Bay Area Rapid Transit (BART) subway system in the mid to late 60s, they did, indeed, find more than a bit of old ships, earthquake destroyed buildings, and other rubble as they dug the tunnels; there was much concern in the news reporting of the BART digs about the ultimate stability and safety of the tunnels. After the 1906 Great Earthquake, many buildings did, in fact, collapse when the land fill underneath them gave way. For the developers to cut corners and do such a shoddy job seems to give cause for possible criminal prosecution; the apartment owners are now certainly going to sue, civilly; aside from quite possibly losing their homes, even if the problems are fixed, the value of their holdings will be seriously diminished if they try to sell... <O> __________________ __________________________________________________ __

08-02-16, 07:06 AM	#2
Betonov Navy Seal Join Date: May 2009 Location: Slovenia Posts: 8,647 Downloads: 26 Uploads: 0	I'm no construction engineer, but 40cm down and 10cm to the side is a recipee for a disaster.

08-02-16, 08:20 PM	#13
fireftr18 Ocean Warrior Join Date: Feb 2010 Location: Kentucky Posts: 2,528 Downloads: 77 Uploads: 0	I'm not an expert, but do know a little something about building collapse. An unstable, tilting building is not good. __________________ Of all the forms of Martial Arts, Karaoke causes the most pain!