kzt wrote:Jonathan_S wrote: Those towers are ridiculously strong.
David seems to think that everyone is trying to design a hardened fortress with everything he's done. The ships being two to three+ orders of magnitude stronger than they need to be, the towers able to stand up to midrange nuclear contact bursts.
Extra material costs money, reduces usable volume and increases build time. There is a reason why people don't design aircraft to survive being flown through skyscrapers or bridges to handle someone parking an aircraft carrier on it.
As i´ve read it, it seems to be a matter of structural supports requiring a certain amount of material to be functional, but once you hit that level of functional you also get a bonus of a lot of extra structural integrity.
You know what architects and structural engineers do with ridiculously strong materials? They make things much thinner and more open.
Not if the material NEEDS a certain "thickness" to achieve that ridiculous strength.
And they usually minimalise for the primary reason of building bigger/higher, as doing that today requires total and upper parts weight to not be too great.
Ceramacrete obviously doesn´t play by regular rules as it´s lighter and much stronger.
And it´s not like there are no such materials already in existence. For example there´s one such material that today is used by dentistry for certain demanding fillings, it´s very complex, much stronger than concrete, much lighter, and right now too expensive to use for anything largescale, not to mention noone knows a way to work with it in large scale either.
But if those two problems were fixed some day, then there you have your "ceramacrete" already.
As mentioned, ceramacrete is often used in about a foot thick builds, it may simply be that once you reduce that thickness by more than a little, the material gets insufficient internal support and becomes much weaker, so you build it to last, nothing wrong about that.
Have you ever met an architect?
Personally, my 2nd best friend´s father is one.
More pointedly i might mention how the WTC were "wonders of lightweight construction", and how that design style was effectively banned just years after they were finished.
And how nowadays, there´s just no highrise built without just a single structural support, anywhere. It´s not even 2 independent separate supports, but rather 3, 4 or even 5, often designed in such a spread out way that something that causes severe damage to one support simply cannot reach at least some other structural supports without whatever caused the damage is so extreme that it takes down a building right away.