Robertson offers primary metal building frames in three main categories: Clear Span, Multi-span, and Lean-to. Our primary steel building framing acts as a single unit after assembly that will support the load of the finished structure while transferring the weight to the foundation.
Robertson has a generous selection of secondary structural shapes, sizes, and gauges to fit your every need. Secondary structural steel building framing includes purlins and girts (cee and zee profiles), eave struts, base angles, clips, and other miscellaneous structural parts, which are the members that support the wall and roof panels.
Robertson’s building bracing systems transfer seismic and wind loads from endwalls and sidewalls to the foundation.