A fact from Hyperboloid structure appeared on Wikipedia's
Main Page in the
Did you know column on 27 February 2006. The text of the entry was as follows:
|
This article is rated B-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||||||
|
Architecture would be better not as a history class. Anyone who knows decent amounts of architecture and advantages and disadvantages, construction difficulties and eases, structural integrity, etc., would help. I will start it, continue as needed. Inthend9 ( talk) 03:01, 10 August 2009 (UTC)
Apparently the text of the article is a copy of http://www.arches.uga.edu/~anikov/intel/abstracts.doc . But since you, User:Elizabeth English appear to be the author of the original text, I believe you might also make an explicit statement about its copyright status and that you agree for it to be used under wikipedia license. I know it seems self-evident if you are the same person who authored the orignal article, but this is better be said. -- Lysy talk 08:38, 24 February 2006 (UTC)
I have nominated the article on WP:DYK. Please check the question at Template talk:Did you know#February 23 abakharev 00:48, 25 February 2006 (UTC)
But it seems to not discuss why the two modern Australian buildings use these roofs or what the advantages/disadvantages/engineering challenges are... ++ Lar: t/ c 01:49, 25 February 2006 (UTC)
I did a tour of the Sydney Opera House about a month ago. The guide said that the sails were meant to be parabolic, but when they wind-tunnel tested them, the structure collapsed. As a result they redesigned the whole thing and the sails are actually spherical cut-outs. Not knowing much about this topic, I thought to add a note here. I do not know if this makes the Opera House unsuitable for this article. Yewenyi 01:56, 27 February 2006 (UTC)
In this picture, the curved surfaces look to me as if they have positive Gaussian curvature. Hyperboloid structures of course have negative Gaussian curvature. Am I missing something? Michael Hardy 03:08, 27 February 2006 (UTC)
Oh: I've commented out the picture. See Sydney Opera House. Michael Hardy 03:11, 27 February 2006 (UTC)
...and now I've looked at more pictures of that building and consequently deleted all mention of it from this article. The assertions here are quite obviously incorrect. Michael Hardy 03:25, 27 February 2006 (UTC)
Please see my answer below to the 'hyperboloid of two sheets' section. also see
http://www.dangermouse.net/povray/landmarks/. and if you want some of utzones original stuff,
http://static.flickr.com/4/3987695_e3fe88f531_m.jpg and
http://www.chiefengineer.org/images/news/1204feat5.gif
Miscreant 22:26, 31 July 2006 (UTC)
I've edited the phrase "non-Euclidean" out of the following sentence:
I don't think whoever put that in understood the meaning of the term. The term "non-Euclidean" applies to an entire mathematical theory, not to a specific shape. It's true that there are models of non-Euclidean geometry that are constructed using two-dimensional surfaces embedded in a three-dimensional Euclidean space, but, e.g., we don't describe a sphere as non-Euclidean just because it can be used in this way.-- Bcrowell 04:33, 27 February 2006 (UTC)
Sidney Opera House is Hyperboloid of two sheets, see Fig 2: http://www.nexusjournal.com/Didactics_v5n1-Consiglieri.html
This is wrong. Many People here are wrong about this. The Sydney Opera house IS NOT a Hyperboloid. It was DESIGNED ORIGINALLY as a hyperboloid, but this proved difficult/impossible to build. The final building is pure spherical shells, which proved far easier both for the structural engineers att the time (Arups), and for the construction process (using a sphere meant that the whole could be made as a series of repetitive elements rather than building each being individual.
If you want more proof of this, I will find it for you, but please dont guess. Miscreant 22:23, 31 July 2006 (UTC)
Which are the disadvantages of hyperbolic structures? Why are most lattice towers no hyperbolic structures? (I believe they have a too big surface, which had to be painted)
I thought calling someone 'great' in the opening sentance ("first applied by great Russian engineer Vladimir Grigorevich Shukhov (1853-1939)")was a little against the Wikipedia:Neutral point of view policy. But when changed it was soon reverted back. I don't want to start a minor edit war so i'll put my thought here instead. I'm not too concerned if other people think its okay, but it seems quite blatant to me. Miscreant 11:39, 10 August 2006 (UTC)
The intro should state what a Hyperboloid structure is to begin with, before going into the history of it. Malamockq 18:44, 16 May 2007 (UTC)
I came here to say just that. What is a hyperboloid structure, and why should we care who designed it? 218.225.111.205 07:05, 17 July 2007 (UTC)
See Greek battleship Limnos for instance —Preceding unsigned comment added by 213.137.118.204 ( talk) 21:04, 4 July 2008 (UTC)
Is it always possible to see, if a structure is hyperbolic? For example Pylons of Cadiz are not, although they look very similiar. —Preceding unsigned comment added by 91.46.215.93 ( talk) 22:50, 20 June 2010 (UTC)
The Feb. 1980 issue of Popular Science had a cover article on hypar structures built using a light frame of steel rebar and strips of fiberglass screen. The screen was then covered with plastic resin ans for some applications a layer of concrete. http://books.google.com/books?id=96m36VQHlE8C&pg=PA74&lpg=PA74&dq=popular+science+hypar&source=bl&ots=nIG2oPiNr0&sig=lIohdEQV_Catn_2JdEvqp4gfN8E&hl=en&ei=gm7CTPztBYugsQOSpO3GDg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBMQ6AEwAA#v=onepage&q=popular%20science%20hypar&f=false 66.232.94.33 ( talk) 05:13, 23 October 2010 (UTC)
I question the value of this new link:
Up to where it stops playing for me, all I see is some people admiring the tower. Is the narration informative? — Tamfang ( talk) 23:14, 9 June 2012 (UTC)
Video of the World's First Hyperboloid structure is a rarity. This video very informative. — Arssenev ( talk) 11:07, 10 June 2012 (UTC)
The article seems to indicate that there are thermodynamic reasons to using the hyperboloid shape. As far as I have been able to determine, the shape is ONLY structural. Perhaps this paragraph could do with some rewording?-- Graham Proud ( talk) 05:12, 18 March 2014 (UTC)
And what does "installation of fill" mean? — Tamfang ( talk) 23:41, 18 March 2014 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Hyperboloid structure. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at {{
Sourcecheck}}
).
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 18 January 2022).
Cheers.— InternetArchiveBot ( Report bug) 11:57, 21 July 2016 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Hyperboloid structure. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 18 January 2022).
Cheers.— InternetArchiveBot ( Report bug) 13:44, 9 November 2017 (UTC)
A fact from Hyperboloid structure appeared on Wikipedia's
Main Page in the
Did you know column on 27 February 2006. The text of the entry was as follows:
|
This article is rated B-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||||||
|
Architecture would be better not as a history class. Anyone who knows decent amounts of architecture and advantages and disadvantages, construction difficulties and eases, structural integrity, etc., would help. I will start it, continue as needed. Inthend9 ( talk) 03:01, 10 August 2009 (UTC)
Apparently the text of the article is a copy of http://www.arches.uga.edu/~anikov/intel/abstracts.doc . But since you, User:Elizabeth English appear to be the author of the original text, I believe you might also make an explicit statement about its copyright status and that you agree for it to be used under wikipedia license. I know it seems self-evident if you are the same person who authored the orignal article, but this is better be said. -- Lysy talk 08:38, 24 February 2006 (UTC)
I have nominated the article on WP:DYK. Please check the question at Template talk:Did you know#February 23 abakharev 00:48, 25 February 2006 (UTC)
But it seems to not discuss why the two modern Australian buildings use these roofs or what the advantages/disadvantages/engineering challenges are... ++ Lar: t/ c 01:49, 25 February 2006 (UTC)
I did a tour of the Sydney Opera House about a month ago. The guide said that the sails were meant to be parabolic, but when they wind-tunnel tested them, the structure collapsed. As a result they redesigned the whole thing and the sails are actually spherical cut-outs. Not knowing much about this topic, I thought to add a note here. I do not know if this makes the Opera House unsuitable for this article. Yewenyi 01:56, 27 February 2006 (UTC)
In this picture, the curved surfaces look to me as if they have positive Gaussian curvature. Hyperboloid structures of course have negative Gaussian curvature. Am I missing something? Michael Hardy 03:08, 27 February 2006 (UTC)
Oh: I've commented out the picture. See Sydney Opera House. Michael Hardy 03:11, 27 February 2006 (UTC)
...and now I've looked at more pictures of that building and consequently deleted all mention of it from this article. The assertions here are quite obviously incorrect. Michael Hardy 03:25, 27 February 2006 (UTC)
Please see my answer below to the 'hyperboloid of two sheets' section. also see
http://www.dangermouse.net/povray/landmarks/. and if you want some of utzones original stuff,
http://static.flickr.com/4/3987695_e3fe88f531_m.jpg and
http://www.chiefengineer.org/images/news/1204feat5.gif
Miscreant 22:26, 31 July 2006 (UTC)
I've edited the phrase "non-Euclidean" out of the following sentence:
I don't think whoever put that in understood the meaning of the term. The term "non-Euclidean" applies to an entire mathematical theory, not to a specific shape. It's true that there are models of non-Euclidean geometry that are constructed using two-dimensional surfaces embedded in a three-dimensional Euclidean space, but, e.g., we don't describe a sphere as non-Euclidean just because it can be used in this way.-- Bcrowell 04:33, 27 February 2006 (UTC)
Sidney Opera House is Hyperboloid of two sheets, see Fig 2: http://www.nexusjournal.com/Didactics_v5n1-Consiglieri.html
This is wrong. Many People here are wrong about this. The Sydney Opera house IS NOT a Hyperboloid. It was DESIGNED ORIGINALLY as a hyperboloid, but this proved difficult/impossible to build. The final building is pure spherical shells, which proved far easier both for the structural engineers att the time (Arups), and for the construction process (using a sphere meant that the whole could be made as a series of repetitive elements rather than building each being individual.
If you want more proof of this, I will find it for you, but please dont guess. Miscreant 22:23, 31 July 2006 (UTC)
Which are the disadvantages of hyperbolic structures? Why are most lattice towers no hyperbolic structures? (I believe they have a too big surface, which had to be painted)
I thought calling someone 'great' in the opening sentance ("first applied by great Russian engineer Vladimir Grigorevich Shukhov (1853-1939)")was a little against the Wikipedia:Neutral point of view policy. But when changed it was soon reverted back. I don't want to start a minor edit war so i'll put my thought here instead. I'm not too concerned if other people think its okay, but it seems quite blatant to me. Miscreant 11:39, 10 August 2006 (UTC)
The intro should state what a Hyperboloid structure is to begin with, before going into the history of it. Malamockq 18:44, 16 May 2007 (UTC)
I came here to say just that. What is a hyperboloid structure, and why should we care who designed it? 218.225.111.205 07:05, 17 July 2007 (UTC)
See Greek battleship Limnos for instance —Preceding unsigned comment added by 213.137.118.204 ( talk) 21:04, 4 July 2008 (UTC)
Is it always possible to see, if a structure is hyperbolic? For example Pylons of Cadiz are not, although they look very similiar. —Preceding unsigned comment added by 91.46.215.93 ( talk) 22:50, 20 June 2010 (UTC)
The Feb. 1980 issue of Popular Science had a cover article on hypar structures built using a light frame of steel rebar and strips of fiberglass screen. The screen was then covered with plastic resin ans for some applications a layer of concrete. http://books.google.com/books?id=96m36VQHlE8C&pg=PA74&lpg=PA74&dq=popular+science+hypar&source=bl&ots=nIG2oPiNr0&sig=lIohdEQV_Catn_2JdEvqp4gfN8E&hl=en&ei=gm7CTPztBYugsQOSpO3GDg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CBMQ6AEwAA#v=onepage&q=popular%20science%20hypar&f=false 66.232.94.33 ( talk) 05:13, 23 October 2010 (UTC)
I question the value of this new link:
Up to where it stops playing for me, all I see is some people admiring the tower. Is the narration informative? — Tamfang ( talk) 23:14, 9 June 2012 (UTC)
Video of the World's First Hyperboloid structure is a rarity. This video very informative. — Arssenev ( talk) 11:07, 10 June 2012 (UTC)
The article seems to indicate that there are thermodynamic reasons to using the hyperboloid shape. As far as I have been able to determine, the shape is ONLY structural. Perhaps this paragraph could do with some rewording?-- Graham Proud ( talk) 05:12, 18 March 2014 (UTC)
And what does "installation of fill" mean? — Tamfang ( talk) 23:41, 18 March 2014 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Hyperboloid structure. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at {{
Sourcecheck}}
).
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 18 January 2022).
Cheers.— InternetArchiveBot ( Report bug) 11:57, 21 July 2016 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Hyperboloid structure. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 18 January 2022).
Cheers.— InternetArchiveBot ( Report bug) 13:44, 9 November 2017 (UTC)