I am from a Design-Build Arch/Eng. Firm. Most (80%) of the buildings we build are pre-engineered steel, warehouses and production/offices. The exterior wall components (and some interior walls) consist of rolled steel girts and a thin metal panel attached to the exterior of the girt. Roofs are the same but placed on a slight angel. My question is how many Revit users draw this kind of building and how?