Yes, those tall buildings really sway

Q. We were in Manhattan recently, and learned that tall buildings actually sway back and forth. We stared at the tallest apartment building in the Western Hemisphere, at 432 Park Ave., but couldn’t really tell. Do these buildings sway? How far? Wouldn’t that be dangerous, and how come we don’t hear about it? Why would people put up with that for so much money?

A. Yes, for anywhere from $2 million upward (pun intended) to around $200 million, you, too, can get a continuous amusement ride, or the sensation of always being on a cruise, if you like that sort of thing. When people, mostly at parties, ask me whether I have designed anything tall or famous, I wince, because I’d rather be asked if I’ve ever done anything that people enjoyed seeing or being in.
Few people ever discuss the failings of the most well-known architects. Most of the buildings Frank Lloyd Wright designed leaked. Wright never really was a trained or licensed architect, but he made it to postage stamp status. When the 500-pound windows began flying out of I.M. Pei’s Hancock Tower in Boston, most people, except those who either nearly died or had to clean up the mess, never noticed. The list of the ways in which we learn from building design “aberrations” is endless, but the important thing is that we learn.
People who can afford to live in those tall buildings, above the crowds of common folk, must have to accept the soft sway of the windswept towers they rest their weary heads in. I have read many articles in technical magazines, and reports about how engineers have been tasked with trying to resolve the problems. In the case of 432 Park Avenue, two “dampers” were designed into the center of the tower, even though there is currently no code requirement for them.
The Burj Khalifa, in Dubai, which is much taller than 432 Park Avenue, has features including an aerodynamic shape to cut the wind, and a massive 660-ton pendulum that sways from cables in the core of the building. Even so, on the 163rd floor, the building sways 6½ feet back and forth. There are many different damper systems, flexible, viscoelastic collars and inserts between the rigid steel frame connections that transfer the forces by taking the heat away from the strain of the otherwise rigid joints. Without all of these shock-reducing components, sections would crack and crumble.
As it is, the residents of 432 Park Avenue have complained of air conditioning and heating malfunctions and acoustical discomfort from the creaking walls, whistling wind and stalled elevators. Most of the units are purchased for the beautiful vistas, and you can sell anything to someone who doesn’t do their homework. Many units have been leased and re-leased, bought and sold several times in the three years since the tower opened, with the prices going up and up. Better than buying the Brooklyn Bridge, right?

© 2024 Monte Leeper. Readers are encouraged to send questions to yourhousedr@aol.com, with “Herald question” in the subject line, or to Herald Homes, 2 Endo Blvd., Garden City, NY 11530, Attn: Monte Leeper, architect.