Talk:Jefferson National Expansion Memorial

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To-do list for Jefferson National Expansion Memorial:	edit · history · watch · refresh
add section on history of the park: what it all was before designation, how it became a national park, etc. flesh out Old Courthouse mention any significant events at the park? if so, please mention discuss broader cultural significance of Old Courthouse and/or Arch Discuss history of funding for the Arch (find source). IIRC Locals had to match the federal funding to build it. The "giant hairpin" design was so unpoplar with voters the tax measure for the local half of financing would have failed if civic leaders had not resorted to ballet stuffing.

To-do list for Jefferson National Expansion Memorial:

edit · history · watch · refresh

add section on history of the park: what it all was before designation, how it became a national park, etc.
flesh out Old Courthouse mention
any significant events at the park? if so, please mention
discuss broader cultural significance of Old Courthouse and/or Arch
Discuss history of funding for the Arch (find source). IIRC Locals had to match the federal funding to build it. The "giant hairpin" design was so unpoplar with voters the tax measure for the local half of financing would have failed if civic leaders had not resorted to ballet stuffing.

1 Security Measures
2 Request for Clarification
3 Confusingly stated equations
4 Incidents of flights through the Arch
5 Website Copying
6 Catenary and Jefferson
7 Raw Facts?

[edit] Security Measures

I seen the Arch in December of 2004. Since this was my first time back to the Arch visitor center since 2000, several security changes had been made. It used to be that people would only be screened if they took the tram, now everyone is screened before entering the visitor center.

I did want to make people aware of this, because the design of the visitor's center and the placement of the metal detectors will mean that people will have to stand outside in all sorts of weather - it does take time to process visitors. Especially those who are more vulnerable health-wise should be aware of this.

JesseG 03:42, Jan 1, 2005 (UTC)

[edit] Request for Clarification

The article says, "Its legs are equilateral triangles". I don't know what that means, and I don't even see how that could be meaningful. Can anyone clarify, or should I remove it?

James barton 12:48, 30 January 2006 (UTC)

Could it have meant the cross-sections of its legs? Michael Hardy 20:06, 5 March 2006 (UTC)

Based on the pictures, it seems likely that cross-sections are what was intended. I've edited the article accordingly. Michael Hardy 20:22, 5 March 2006 (UTC)

[edit] Confusingly stated equations

The article said:

this set of parametric equations:

$Y=A \left ( \cosh \frac {X}{L} C- 1 \right )$

$X=\frac {L}{C} \left [ \cosh^{-1} \left ( 1+ \frac {Y}{A} \right ) \right ]$

Calling it a "set of parametric equations" leads one to expect that it expresses both X and Y as functions of some parameter -- the same parameter for both. Having read that, one immediately sees:

$Y=\cdots\,$

$X=\cdots,\,$

and that's just what you expect when you read the words "set of parametric equations", and you expect to see, to the right of "=", expressions of X and Y in terms of some paramater independent of both. Then you actually read what they say, and that's not it at all.

Hence my recent edit. Michael Hardy 20:13, 5 March 2006 (UTC)

[edit] Incidents of flights through the Arch

According to http://www.nps.gov/jeff/adhi%20Folder/adhi2-13.htm , there have been no less than eleven incidents of aircraft having been flown under the arch, not four as stated in the article.

Leebert 02:37, 10 April 2006 (UTC)

The count of four came from the arch timeline on the P-D website. The NPS page's footnotes thoroughly document the eleven, so I've updated the page, and added the bit about the aborted attempt to scale it. --Kbh3^rd talk 03:36, 10 April 2006 (UTC)

I changed the text to "No less than 11 aircraft" from "As many as". Perhaps a quibble, but the referenced article itself says that there were 11 confirmed flythroughs, which would set a lower boundry, not an upper boundry. Leebert 19:33, 11 April 2006 (UTC)

[edit] Website Copying

The website http://www.squidoo.com/stlouisarch/ (found in a Google search) seems to have copied the Wikipedia article but there is no mention of the GNU Free Documenation license on the website. --Mosquitopsu 05:02, 4 May 2006 (UTC)

[edit] Catenary and Jefferson

Shouldn't mention be made of the coincidence (or not coincidence) that the arch is a catenary, and that Thomas Jefferson coined the term 'catenary'?

[edit] Raw Facts?

I think it should mention exactly how long it took to make the Arch, the amount of materials in weight or quantity, and exactly what was built along with it.

I believe I read that actuaries had predicted that about 10 workers would perish during construction, but not a one was lost. Perhaps this fact can be found in citable form. weetbixkid 06:16, 16 November 2006 (UTC)

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Talk:Jefferson National Expansion Memorial

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