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		<title>WTC Modeling and Simulation - new forum posts</title>
		<link>http://wtcmodel.wikidot.com/forum/start</link>
		<description>Posts in forums of the site &quot;WTC Modeling and Simulation&quot; - modeling the World Trade Center towers</description>
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				<guid>http://wtcmodel.wikidot.com/forum/t-60066#post-164565</guid>
				<title>Corrected some perimeter column info</title>
				<link>http://wtcmodel.wikidot.com/forum/t-60066/corrected-some-perimeter-column-info#post-164565</link>
				<description></description>
				<pubDate>Fri, 16 May 2008 04:49:36 +0000</pubDate>
				<wikidot:authorName>wtcmodeler</wikidot:authorName>				<wikidot:authorUserId>16548</wikidot:authorUserId>				<content:encoded>
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						 <p>Corrected perimeter column data info given on the page <a class="newpage" href="http://wtcmodel.wikidot.com/structural-data-for-wtc-1-2">Structural Data for WTC 1, 2</a>. On that page it was stated that the NIST documents state:</p> <blockquote> <p>Fourteen grades of steel were used in the construction of the perimeter columns with minimum yield strengths of 36, 42, 45, 46, 50, 55, 60, 65, 70, 75, 80, 85, 90, and 100 ksi.</p> </blockquote> <p>However, as the page now indicates, NIST NCSTAR 1-3 actually says:</p> <blockquote> <p>PC&amp;F of Seattle, Washington, fabricated the perimeter wall panels. The perimeter panels were comprised of three important subassemblies: the columns, the spandrels,<br /> and the truss seats. The structural plans called for the columns to be fabricated from 14 grades of steel with Fy = 36, 42, 45, 46, 50, 55, 60, 65, 70, 75, 80, 85, 90,<br /> and 100 ksi, although PC&amp;F received approval to upgrade all 85 and 90 ksi steels to 100 ksi. Above the 75th floor, more than half of the columns had yield strengths<br /> between 55 ksi and 70 ksi, inclusive. The spandrels were fabricated from twelve grades of steel with Fy = 36, 42, 45, 46, 50, 55, 60, 65, 70, 75, 80, and 100 ksi (again<br /> with all 85 ksi steel upgraded to 100 ksi). The truss seats were specified to be fabricated from steel with Fy = 36 ksi minimum.</p> </blockquote> <br/>Forum category: <a href="http://wtcmodel.wikidot.com/forum/c-13137">Site Forum / News</a><br/>Forum thread: <a href="http://wtcmodel.wikidot.com/forum/t-60066/corrected-some-perimeter-column-info">Corrected some perimeter column info</a>
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				<guid>http://wtcmodel.wikidot.com/forum/t-58896#post-161361</guid>
				<title>Fixed problem with CC1002 images</title>
				<link>http://wtcmodel.wikidot.com/forum/t-58896/fixed-problem-with-cc1002-images#post-161361</link>
				<description></description>
				<pubDate>Sun, 11 May 2008 06:04:58 +0000</pubDate>
				<wikidot:authorName>wtcmodeler</wikidot:authorName>				<wikidot:authorUserId>16548</wikidot:authorUserId>				<content:encoded>
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						 <p>The page <a href="http://wtcmodel.wikidot.com/cc1002">CC1002</a> was mistakenly showing the static images of CC1003. The CC1003 images have been replaced by the correct CC1002 images.</p> <br/>Forum category: <a href="http://wtcmodel.wikidot.com/forum/c-13137">Site Forum / News</a><br/>Forum thread: <a href="http://wtcmodel.wikidot.com/forum/t-58896/fixed-problem-with-cc1002-images">Fixed problem with CC1002 images</a>
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				<guid>http://wtcmodel.wikidot.com/forum/t-16046#post-40436</guid>
				<title>Added column 704 images</title>
				<link>http://wtcmodel.wikidot.com/forum/t-16046/added-column-704-images#post-40436</link>
				<description></description>
				<pubDate>Fri, 10 Aug 2007 23:15:30 +0000</pubDate>
				<wikidot:authorName>wtcmodeler</wikidot:authorName>				<wikidot:authorUserId>16548</wikidot:authorUserId>				<content:encoded>
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						 <p>The images of the sections of column 704 have been added to the NIST core column collection <a href="http://wtcmodel.wikidot.com/cc704">here</a>.</p> <br/>Forum category: <a href="http://wtcmodel.wikidot.com/forum/c-13137">Site Forum / News</a><br/>Forum thread: <a href="http://wtcmodel.wikidot.com/forum/t-16046/added-column-704-images">Added column 704 images</a>
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				<guid>http://wtcmodel.wikidot.com/forum/t-15929#post-40116</guid>
				<title>Added the animated gifs for each of the columns.</title>
				<link>http://wtcmodel.wikidot.com/forum/t-15929/added-the-animated-gifs-for-each-of-the-columns#post-40116</link>
				<description></description>
				<pubDate>Thu, 09 Aug 2007 02:32:21 +0000</pubDate>
				<wikidot:authorName>wtcmodeler</wikidot:authorName>				<wikidot:authorUserId>16548</wikidot:authorUserId>				<content:encoded>
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						 <p>Initially, only pages for columns 501 and 502 had the animated gifs that cycles through the column sections attached to them. The remainder of the animations are now in place.</p> <br/>Forum category: <a href="http://wtcmodel.wikidot.com/forum/c-13137">Site Forum / News</a><br/>Forum thread: <a href="http://wtcmodel.wikidot.com/forum/t-15929/added-the-animated-gifs-for-each-of-the-columns">Added the animated gifs for each of the columns.</a>
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				<guid>http://wtcmodel.wikidot.com/forum/t-15738#post-39711</guid>
				<title>Added RSS news feed to the left panel News section</title>
				<link>http://wtcmodel.wikidot.com/forum/t-15738/added-rss-news-feed-to-the-left-panel-news-section#post-39711</link>
				<description></description>
				<pubDate>Mon, 06 Aug 2007 17:48:52 +0000</pubDate>
				<wikidot:authorName>wtcmodeler</wikidot:authorName>				<wikidot:authorUserId>16548</wikidot:authorUserId>				<content:encoded>
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						 <p>An RSS feed was added to the left hand panel for easy access to the site updates thread.</p> <br/>Forum category: <a href="http://wtcmodel.wikidot.com/forum/c-13137">Site Forum / News</a><br/>Forum thread: <a href="http://wtcmodel.wikidot.com/forum/t-15738/added-rss-news-feed-to-the-left-panel-news-section">Added RSS news feed to the left panel News section</a>
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				<guid>http://wtcmodel.wikidot.com/forum/t-15676#post-39597</guid>
				<title>Created forum News thread for site updates</title>
				<link>http://wtcmodel.wikidot.com/forum/t-15676/create-forum-news-thread-for-site-updates#post-39597</link>
				<description></description>
				<pubDate>Sun, 05 Aug 2007 22:40:36 +0000</pubDate>
				<wikidot:authorName>wtcmodeler</wikidot:authorName>				<wikidot:authorUserId>16548</wikidot:authorUserId>				<content:encoded>
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						 <p>A News forum topic was created as a place to put updates and announcements which will be shown on the side bar.</p> <br/>Forum category: <a href="http://wtcmodel.wikidot.com/forum/c-13137">Site Forum / News</a><br/>Forum thread: <a href="http://wtcmodel.wikidot.com/forum/t-15676/create-forum-news-thread-for-site-updates">Create forum News thread for site updates</a>
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				<guid>http://wtcmodel.wikidot.com/forum/t-14853#post-39424</guid>
				<title>Re: NIST SAP2000 model data</title>
				<link>http://wtcmodel.wikidot.com/forum/t-14853/nist-sap2000-model-data#post-39424</link>
				<description></description>
				<pubDate>Sun, 05 Aug 2007 01:28:04 +0000</pubDate>
				<wikidot:authorName>wtcmodeler</wikidot:authorName>				<wikidot:authorUserId>16548</wikidot:authorUserId>				<content:encoded>
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						 <p>A nearly complete set of images is now available, go to the <a href="http://wtcmodel.wikidot.com/nist-core-column-data">NIST Core Column Data</a>. I want to have the animated gif's on the page for each core column, currently they are only there for CC501 and CC502. I will get the rest in place soon. Also, I have not yet dealt with the core column sections that are composed of an I-beam sandwiched between two plates. Fixing those up will be the next round of work.</p> <br/>Forum category: <a href="http://wtcmodel.wikidot.com/forum/c-12476">Site Forum / WTC 1 &amp; 2</a><br/>Forum thread: <a href="http://wtcmodel.wikidot.com/forum/t-14853/nist-sap2000-model-data">NIST SAP2000 model data</a>
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				<guid>http://wtcmodel.wikidot.com/forum/t-14853#post-38522</guid>
				<title>Re: NIST SAP2000 model data</title>
				<link>http://wtcmodel.wikidot.com/forum/t-14853/nist-sap2000-model-data#post-38522</link>
				<description></description>
				<pubDate>Wed, 01 Aug 2007 05:12:28 +0000</pubDate>
				<wikidot:authorName>wtcmodeler</wikidot:authorName>				<wikidot:authorUserId>16548</wikidot:authorUserId>				<content:encoded>
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						 <p>Below is an updated version of the core column 501 animated gif with most of the I-beams included. The sections for CC501A104L and CC501A106L currently only show two plates. There should be an I-beam between the two plates. I will try to update for that in the next round. I will also try to generate a set of web pages to display all of the images together with the major data associated with each column section.</p> <img src="http://wtcmodel.wikidot.com/local--files/nist-sap2000-model/CC501_anim.gif" alt="CC501_anim.gif" class="image" /><br/>Forum category: <a href="http://wtcmodel.wikidot.com/forum/c-12476">Site Forum / WTC 1 &amp; 2</a><br/>Forum thread: <a href="http://wtcmodel.wikidot.com/forum/t-14853/nist-sap2000-model-data">NIST SAP2000 model data</a>
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				<guid>http://wtcmodel.wikidot.com/forum/t-14853#post-37133</guid>
				<title>NIST SAP2000 model data</title>
				<link>http://wtcmodel.wikidot.com/forum/t-14853/nist-sap2000-model-data#post-37133</link>
				<description></description>
				<pubDate>Thu, 26 Jul 2007 02:51:59 +0000</pubDate>
				<wikidot:authorName>wtcmodeler</wikidot:authorName>				<wikidot:authorUserId>16548</wikidot:authorUserId>				<content:encoded>
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						 <p>This is a repeat of a post I made on other forums. When I have completed the work of extracting the column data and producing images it will be incorporated into site content.</p> <p>Below is an animated gif I put together that sequences through the entire set of CC501 images I created from the NIST "plate shape" data file. Note that the orientation of the column data changed suddenly after the first few. For this animation I compensated by rotating those first few by 90 degrees which will show up in the animation by the sudden shift in the image. Also, there are several columns which seem to have only two plates specified in the data file. You'll see that for the last couple of images in the sequence before it cycles back to the beginning. Not sure what to make of that yet. Note that the last few digits in the naming scheme for the column sections signifies the floor at which the column section type ends. In other words CC501A1 ends at floor 1 (bottom of story 1), CC501A3 starts on floor 3, and so on.</p> <p>Here is the animation:</p> <img src="http://i90.photobucket.com/albums/k252/lonwaters/wtcmodel/CC501_anim.gif" alt="CC501_anim.gif" class="image" /><br/>Forum category: <a href="http://wtcmodel.wikidot.com/forum/c-12476">Site Forum / WTC 1 &amp; 2</a><br/>Forum thread: <a href="http://wtcmodel.wikidot.com/forum/t-14853/nist-sap2000-model-data">NIST SAP2000 model data</a>
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