<?xml version="1.0" encoding='utf-8'?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="card1" title="Tube (structure) - Page 3 - Wikipedia">
<p>
<a accesskey="1" href="page.php?w=Tube_(structure)&amp;p=2">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Tube_%28structure%29&amp;p=4">3.Next</a>
</p>
<p>be used for <a href="page.php?w=office_building">office</a>, <a href="page.php?w=apartment_building">apartment</a>, and <a href="page.php?w=Mixed-use_development">mixed-use</a> buildings. Most buildings of over 40 stories built since the 1960s are of this structural type.</p>

<p><big>Concept</big></p>
<p>The tube system concept is based on the idea that a building can be made to resist lateral loads by designing it as a hollow <a href="page.php?w=cantilever">cantilever</a> perpendicular to the ground. In the simplest incarnation of the tube, the perimeter</p><p>
<a accesskey="1" href="page.php?w=Tube_(structure)&amp;p=2">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Tube_%28structure%29&amp;p=4">3.Next</a>
</p>

<do type="prev" label="Search">
        <go href="search.wml"/>
</do>

</card>
</wml>
