http://www.steelchurchbuildings.org Building the House of the LORD . . . Sun, 04 Jan 2009 16:00:39 +0000 http://backend.userland.com/rss092 en             There are several ways of grouping steel roofing types and one of the most common is by means of attachment to its supports.            The term “through-fastened roofs” applies when the roof is attached directly with rivets or screws to the purlins. An indirect method of attachment is seen in ... http://www.steelchurchbuildings.org/steel-roofing-with-attachments-and-seaming/