Does anyone have experience with Octagon Air Systems products. They have been suggested as a possible supplier but I 've never heard of them. This would be for an air handler with heating & cooling coils.
I am a mechanical engineer by discipline. Most of my projects require some elementary design of structural elements to support equipment on roofs, slabs or from ceilings. Is there a handbook that helps with basic structural design without having complex calcs. For example, 2 1/2 inch angle iron...