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Midtown Manhattan blocks evacuated after beams buckling at construction site

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Re: Midtown Manhattan blocks evacuated after beams buckling at construction site

#21

The USA is mostly empty space. Trying to force upwards in such an already dense area just doesn't make sense. We are not constrained the way singapore is.

Spreading out requires more non-foot travel to get places. Density means things can be closer.

Seeing how elevators are akin to vertical subways I think that problem goes both ways.

Re: Midtown Manhattan blocks evacuated after beams buckling at construction site

#24
post #9

I'm not an expert but those look like pretty wimpy columns? Kind of surprising, when I worked in a tower it had exposed concrete columns that were very thick in comparison

As the sibling says, that first picture shows essentially interior wall framing. They shouldn't really be seeing any load!

They are buckling because the floors and ceilings are bending!

Scroll down and there is a picture of a much thicker support pillar, though still seems thin? Maybe just the context in frame doesn't do it justice.

Re: Midtown Manhattan blocks evacuated after beams buckling at construction site

#25

Earlier quoted context omitted.

Not if you make the strings different lengths.

In that case the helicopters lower in the pecking order will chop off the strings for the higher ones. I thing seagulls is a better idea, if it worked for a giant peach it should work for a building. Plenty of those around and they'll work for peanuts.

Balloons should do it.

Re: Midtown Manhattan blocks evacuated after beams buckling at construction site

#26

They're adding a hunch of floors to an existing building - it was the old Pfizer headquarters and they want to turn it into apartments. Someone either didn't do the proper engineering study, or the original specs weren't accurate. Figuring out who to blame will probably take years in court.

More often than a faulty initial design, it's because of a something not being followed, e.g. the design called for one type of material or process and another was used during construction, either on accident or on purpose but without correctly doing the math to verify that it will work.

Re: Midtown Manhattan blocks evacuated after beams buckling at construction site

#27

Earlier quoted context omitted.

Spreading out requires more non-foot travel to get places. Density means things can be closer.

Seeing how elevators are akin to vertical subways I think that problem goes both ways.

Definitely had to factor in elevator time for my commute when I worked on the 38th floor.

Re: Midtown Manhattan blocks evacuated after beams buckling at construction site

#28
post #6

Does anyone here have any knowledge of how something like this gets resolved?

Most likely the building gets stabilized and then anyone involved gets embroiled in lawsuits and it stays standing half finished for years. One Seaport is a famous recent example of an under construction skyscraper getting halted for structural issues. https://en.wikipedia.org/wiki/161_Maiden_Lane

They have something like that in San Francisco (https://en.wikipedia.org/wiki/301_Mission_Street) but they key to finishing it is to not tell anyone it's crooked until after you've sold all of the units.

Re: Midtown Manhattan blocks evacuated after beams buckling at construction site

#30

Earlier quoted context omitted.

Tie every helicopter you can find to the roof, gas the bent bit off, haul it away and drop it somewhere? They'll likely shore it up with hydraulic props - probably going through the floor and ceiling to floor slabs above and below - to stabilise it, and then start demolishing the building bit by bit.

When you run the mental model of picking up a building with a bunch of surplus Hueys, do they not all collide together once they start bearing weight?

“spreader bar”
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