1. Jaderloon's testing apparatus is designed to apply weight along the arc of the frame bring tested according to design standards. Weights are suspended directly below the tube's centerline to assure consistent measurement of results.	2. The testing jig holds the frame vertical with this sliding "purlin simulator" to maintain consistent testing parameters.
3. As weights are added to the frame under test, it begins to deform. An identical, unweighted frame is mounted behind the frame under test to show amount and type of deformation.	4. When the frame collapses it reveals not only the amount of weight it can support, but also its weakest point. From this, engineering can develop solutions to eliminate weak points.