<p>They provide the vertical strength necessary for demanding load-bearing structural applications and sufficient strength for many joist applications.<br />They are easily insulated and also noncombustible.</p><br /><br /><ul><li>High strength-to-weight ratio maximizes flexibility and delivers structural integrity for a variety of criteria, like high wind and seismic loads</li><br /><li>Easily insulated for energy conservation</li><br /><li>Noncombustible support for fire-rated construction</li><br /><li>For curtain wall framing</li></ul>