http://www.buildingshelp.org Just another WordPress weblog Wed, 01 Sep 2010 08:33:50 +0000 http://backend.userland.com/rss092 en             All steel building framing systems have a number of similarities and some specific differences. Most require that for the entire structure to work efficiently it needs to have lateral bracing on the rafter’s compression flange. Snow, live, and dead loads create pressure upon the top flange of the primary ... http://www.buildingshelp.org/?p=3