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Comment by helmett | Hacker News Reader

...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

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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...

It's extremely unlikely that the building is sinking and the surrounding area is stable. More likely the building is pulling the entire area down, so it's probably hard to detect as a pedestrian.

A commenter upstream reports seeing the sidewalk being repaired multiple times throughout the last 10 years as well.

Wouldn't the width be a more appropriate measure than height?

  tan θ = opposite / adjacent
        = (horizontal displacement of top) / height

Oh. I read it as the one corner was two inches higher. Vertical displacement / width. But that seems wrong now.

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