51–60 of 187 posts
Earlier quoted context omitted.
Seems to imply they had to do something to the entrances, but not what. Maybe there are little ramps added every year? I'm gonna go look now.
Please take some pictures and share them with us. Another article I read said they have needed to make adjustments to the first floor interface but didn't say what they were.
From the article: "To cut costs, Millennium did not drill piles to bedrock." I'm amazed that a building of that height would be built on a slab with friction piles in the mudflat fill zone of the SF bay. How did they get a building permit for that? 16 inches of sinkage in 8 years is huge. Building sinkage isn't all that unusual, but not for skyscrapers. There was a time when skyscrapers were only built on competent r…
From the article: "To cut costs, Millennium did not drill piles to bedrock." I'm amazed that a building of that height would be built on a slab with friction piles in the mudflat fill zone of the SF bay. How did they get a building permit for that? 16 inches of sinkage in 8 years is huge. Building sinkage isn't all that unusual, but not for skyscrapers. There was a time when skyscrapers were only built on competent r…
Am I reading that map right? Looks like the Millenium Tower is not in the fill zone on the shipwreck map? Hard to tell the shipwreck map looks a bit notional.
My house is on a steep hill, and Seattle has a reputation for hills sliding away under heavy rain. Before building it, I hired 3 separate geologists to evaluate the site. After digging holes, they said the site was sitting on "glacial till", which is clay that was compacted by about a mile of ice, and said there was nothing to worry about. Paying them was worth it for the peace of mind. (Turns out the till was so har…
Loving your attitude. I often feel like with a lot of building (big and small) there is insufficient evaluation of site factors. For example: Is there a hill above the site? THAT needs to be evaluated (sometimes they do, sometimes they don't). Is the site on a traditional floodplain? If so what actions have been taken to redirect the water flow? Does the system have the capacity to move the water away? Is the site it…
I thought concrete buildings without steel frames came down instantly in earthquakes. What am I missing?
Pretty sure they need to safely dismantle this building and try again. In non-earthquake prone areas, it might make sense to jack it up and what not, but not in SF.
...2 inches for such a tall building is such tiny angle If it sinks does this mean the first floor is slightly below the street level ..it probably means that the areas around the door and where the concete meets the street are cracked
I was wondering the same thing, but Google street view (taken in 2014) doesn't show any evidence of such a big dip. How is that possible?? The only thing I can think of is that it's more of a "sag," where the middle has sunk 18" but the edges haven't moved much, but I'm not really satisfied with that theory. https://www.google.com/maps/place/Millennium+Tower+San+Franc...
My house is on a steep hill, and Seattle has a reputation for hills sliding away under heavy rain. Before building it, I hired 3 separate geologists to evaluate the site. After digging holes, they said the site was sitting on "glacial till", which is clay that was compacted by about a mile of ice, and said there was nothing to worry about. Paying them was worth it for the peace of mind. (Turns out the till was so har…
The farmer thanked the geologist, paid him, and then got another geologist in. This second geologist gave him the all clear that he was paid for, and went on his way.
I should point out that my friend lives on the DOWNHILL side of this land, so when it goes...
My house is on a steep hill, and Seattle has a reputation for hills sliding away under heavy rain. Before building it, I hired 3 separate geologists to evaluate the site. After digging holes, they said the site was sitting on "glacial till", which is clay that was compacted by about a mile of ice, and said there was nothing to worry about. Paying them was worth it for the peace of mind. (Turns out the till was so har…
What I've heard is that after the Kobe earthquake, Japanese earthquake rules have been made so good that anything built after '95 has never fallen over, even in 2011-sized earthquakes (at least until the tsunami came).