The main advantage of working in Revit is the absence of mistakes and discrepancies between the dimensions of the façades and the dimensions of the plans or sections of the designed model in comparison with CAD. This happens extremely often, when you change something in one section, and you forget to change the same in the other one, as there are a lot of sections and plans, and it is difficult to keep track of everything. Due to this, problems arise after the issue of documentation and further in the course of fabrication. Thus, you lose your professional status in customers' eyes. Moreover, when using BIM, the pace of work significantly increases, because a three-dimensional model is formed immediately and using it you can make sections or façades in a couple of clicks, there is no need to re-draw them along projected connection lines. This is colossal time-saving.
The second main advantage in comparison with CAD is that the adjacent design disciplines "HVAC", "Production Technology", "Thermal Engineering Solutions" form a spacious model, as well, and it can be inserted in the project as a substrate . This improves perception and makes work easier. Rolled metal lists, bills of elements, bills of scope of work are calculated individually and tabulated without errors, which is an advantage and saves time.