Hearst Tower
...that the uncommon triangulated frame of Hearst Tower, currently under construction in New York City, requires about 20 percent less steel than a conventional perimeter frame?
...that the uncommon triangulated frame of <b id="mwwg"><a class="mw-disambig" href="./Hearst_Tower" id="mwww" rel="mw:WikiLink" title="Hearst Tower">Hearst Tower</a></b>, currently under construction in <a href="./New_York_City" id="mwxA" rel="mw:WikiLink" title="New York City">New York City</a>, requires about 20 percent less <a href="./Steel" id="mwxQ" rel="mw:WikiLink" title="Steel">steel</a> than a conventional perimeter frame?