Choosing The Right Frame: Sideways and Purlin Bracing
July 28th, 2008
(Continued from last week … )
Most steel structure framing systems contain some similarities along with some specific differences. Sideways bracing on the rafter’s compression flange is normally needed to permit the whole building to work efficiently. Elements like rain and snow create pressure on the top flange of the building. But you can provide sufficient bracing with building roof purlins. Any bottom flanges need to be secured because this is the part of the framework subject to compression from wind uplift. The given design staff of the particular steel building manufacturer works out the exact locations of any flange bracing.
(to be continued next week … )
DSB