I had an interesting meeting today talking about the structural approach behind this OMA-designed project in Brooklyn (pictured above).
I have always found structural engineering fascinating. Structures, along with physics, were some of my favorite classes from high school all the way to grad school. So even though I don’t think my personality is ideally suited to engineering, if I were ever to become an engineer, I’m fairly certain that I would need to be a structural one.
For this project the big structural challenge was the large cantilevers that you see above in the tower on the left. As I understand it, there a number of ways to deal with this. One way would be to just design large transfer slabs and/or beams. But given the size of this tower, these would end up being very deep, and so you’d be really compromising the spaces where these structural transfers occur.
How they actually dealt with it is through sloping columns (which you can see in the above photo if you look closely). What these columns do is gradually transfer the loads across multiple floors in the building, until they reach structure that runs all the way down the tower.
At the same time, the spaces underneath the sloping columns are essentially “hung” from above. Meaning the columns are in tension, instead of being in compression, which is typically how columns work. The result is that you get some sloping columns in the suites. But I think that’s kind of cool. If you’re nerdy enough to care, it tells you how the structure of the building is working.
Obvious disclaimer: I am not a structural engineer. You probably want to consult one if you’re looking to do a cantilevered tower with sloping columns.
BRANDON DONNELLY 