Wasn’t One Vanderbilt reached on a 5-foot-thick concrete slab? Wouldn’t it also be possible to build 175 Park Ave on top of it?
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@007 I’m slightly confused by your question or what exactly you are asking.
@Mackensen, I cant recall how thick the core mat foundation was at One Vanderbilt, only that it was one of the largest continuous pours in the cities history. 175 Park Ave cannot be built in a similar manner because of the subway station and utilities underneath it, that is why it looks the way it does, the base design isnt just because SOM wanted it to look pretty/different, it is directly related to how the tower is being supported. In a similar manner to how their 1 MW base design was not just to be pretty.
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is there a pile foundation plan for 175 Park Ave?
similar to the project in Frankfurt…
foundation plan for 175 Park Ave
There are no publicly available plans for 175 Park ave, and/or a number of other projects, those plans are not something that are made to the public and the same goes for construction documents. The foundation plans you saw for the Frankfurt project were photographed, you didnt see them because someone uploaded a pdf of them.
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why only talk about the construction.
but also about architecture style and design?
Read the thread title
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Lol, I’m pretty sure 007 was saying why construction is the only talked about (or most talked about) of the 3 topics the thread is about @mcart.
@007 because its more factual, so people ask more about it/are more interested in it, where as the others are more objective/subjective, even though design and styles can also be factual, construction is purely factual.
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I just happened to notice this thread. PBS did a documentary about this book and building. It might be on youtube.
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What actually is a moment frame construction? Is it the same as a flexural frame construction - this is the information I read about a static detail of a skyscraper on emporis.
What difference does it make if a skyscraper has a steel or a concrete core?
i think it’s the same.
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Back to timber construction. I have some concerns that were not addressed in the video or subsequent conversation.
- Wood can warp over time. This may not be a major concern in a two-story house, but we’re talking about 15-20 story buildings.
- The floorplates are constructed by laminating together what appear to be multiple layers of 2x10s (or something similar). How permanent is that process? As the laminate dries over the years/decades/centuries and the tension from even the most minute stresses from the wood tending to warp, will there be any danger of the elements separating from each other? And how can we be sure?
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I am not remotely an expert, but my understanding is that:
- LVL is not a new material/technology. It’s been around for quite a while and used in many high-profile projects that are decades old at this point. So if there were a fundamental issue with LVL as it ages, we’d know by now.
- The lamination of many boards is precisely what gives it strength and resistance to warping. A single piece of wood might want to warp one way, but with many different pieces of wood glued together, those forces effectively cancel out. And while raw wood is assumed to have some percentage of weak points (knots, etc.), those can be removed (or reduced) with engineered wood.
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Yes, this one needs to be time-tested before we construct buildings with this material. There was a new pedestrian bridge constructed downtown using cross laminated timber: so this will be a good test opportunity as it is exposed to the elements, and the wood sections will not be concealed from casual observation.
Time will tell. My conjecture is this cross laminated timber will be replacing most concrete slab, structural steel when building low rise buildings up to about 6 stories high.
This is one of many major changes coming to ‘the way we build’ in the USA. Contec, prefabricated (off site) construction, IPD Design/Build, and many other changes coming to the A/E/C industry.
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