http://www.steelbuildingreview.net Fri, 17 Oct 2008 18:39:15 +0000 http://backend.userland.com/rss092 en             There are many types of building systems on the market today. This article examines six of them.             The steel truss system has been very popular for many years in bridge and structure building. Steel roof trusses are very cost efficient for clear-span applications up to 140 feet. Steel trusses ... http://www.steelbuildingreview.net/popular-steel-building-systems-in-the-21st-century/