Infinitely strong cantilever
Infinitely strong cantilever
(OP)
Folks...
Can anyone tell me what kind of material these guys are going to make this structure out of? It must have some really good physical properties...
htt p://news.y ahoo.com/s /ap/200508 26/ap_on_r e_us/brf_c anyon_tour ism;_ylt=A oP1yB6PdGp yy6904xeUC Pes0NUE;_y lu=X3oDMTA 3ODdxdHBhB HNlYwM5NjQ-
If anyone knows, I could use some of it...
;)
Can anyone tell me what kind of material these guys are going to make this structure out of? It must have some really good physical properties...
htt
If anyone knows, I could use some of it...
;)






RE: Infinitely strong cantilever
The shadow appears to show cross braces between the inner and outer walls. My guess is the beams would be much deeper than shown in the rendering. No reason they couldn't put big knee braces below it if they so desired.
The article mentions 72,000,000 lbs capacity. I suspect this should be 72,000 lbs.
So be studying up on those curved beam equations...(see that thread in the FEA forum).
RE: Infinitely strong cantilever
RE: Infinitely strong cantilever
uniformly distributed on a ring, 70' radius
centroid is about 50'
so the bending moment at the cliff is 2.5Mft.lbs
supported by two I-beams (of very large size) ...
how about cable trusses above the platform ?
RE: Infinitely strong cantilever
RE: Infinitely strong cantilever
The project is still seeking an insurer, said architect David Jin, who said he came up with the skywalk idea while visiting the canyon in 1996.
do we need to add anything more?
RE: Infinitely strong cantilever
Just when you think one of your designs may be a bit hokey... this will always serve as a baseline of hokeyness... lol
DRW
RE: Infinitely strong cantilever
RE: Infinitely strong cantilever
Dik
RE: Infinitely strong cantilever
RE: Infinitely strong cantilever
One of my mentors always used to say if it doesn't 'look right' then it probably isn't, and the proposed structure, as pictured, just doesn't look right to me.
The knee-braced solution may spoil the view through the 'glass' bottom, so I expect they'll end up with a cable-stayed structure, which will look good anyway.
RE: Infinitely strong cantilever
RE: Infinitely strong cantilever
Regards,
Lutfi
RE: Infinitely strong cantilever
Dik
RE: Infinitely strong cantilever
RE: Infinitely strong cantilever
they must like safety fators out there, because it would be in the order of 3000 or so.
I would pay 25 bucks in a heartbeat to see how they can support 72 million pounds with a cantilever 70 feet long.
RE: Infinitely strong cantilever
"Las Vegas-based architect David Jin came up with the idea for the skywalk in 1996 during a trip to the Canyon.
He teamed up with Lochsa Engineering, also from Las Vegas, whose portfolio includes Mandalay Bay Hotel and Hard Rock Hotel."
IE, those of you wishing to get involved on the project are too late!
Personally, I think they should omit the glass walls, and in fact, not even put up a handrail. Just a 5' wide sidewalk out into space. That would be cool.
RE: Infinitely strong cantilever
http://www.litracon.hu/
http://en.wikipedia.org/wiki/Transparent_aluminum
Flores
RE: Infinitely strong cantilever
The concrete would have to be transparent... not transluscent... else we would see it!
DRW75... that would be an SG0714 sky hook... the 713 is about 8% shy...
Dik (quibbling, again)
RE: Infinitely strong cantilever
What a great place NOT to have something like that.
MHO
pennpoint
RE: Infinitely strong cantilever
Dik
RE: Infinitely strong cantilever
I meant it is appalling to spoil the beauty of the Canyon with this absurdity...build it in Las Vegas, maybe off the Stratosphere Tower. They can demo the entire Main Street below, which is nothing but a haven for drug deals and prostitution anyway, and build a replica of the Canyon there.
RE: Infinitely strong cantilever
RE: Infinitely strong cantilever
Ciao.
RE: Infinitely strong cantilever
Elastic Modulus: 10E99 Pa
Density: 0.00 kg/m^3
Yield Strength: 10E99 Pa
Coefficient of Thermal Expansion: 0.00 /K
It is one of the library of standard materials in my finite element analysis package - comes in really handy when I am having deflection or stress concentration problems using ordinary materials like steel, aluminium, tungsten, titanium, etc.
(However, I have found that most of the metal merchants in my region have very limited stocks.)
RE: Infinitely strong cantilever
You have to go to the specialist dealers, the ones that sell sky hook always have a large supply of unobtainium in stock.
RE: Infinitely strong cantilever
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Flores
RE: Infinitely strong cantilever
Then, maybe they could use hollow sections, and fill them up with compressed hydrogen.
Hell, you wouldn't even have to design them at all. You may have to design something that will hold them DOWN.
:)