Am using on large multi-family housing project to help manage construction activity from Owners perspective. Construction drawings include about 325 sheets plus the supporting materials. Not using as a collaborative tool with the project team as that is simply too complex for what I am doing. The primary benefit of this system is speed of access (am using an iPad with all documents locally stored). Most other services require robust (e.g. NOT cellular) Internet access which on construction sites is rarely available. Having individual sheets locally stored is massively faster than having to slog through 200 MB PDF files that contain every sheet and require constant downloading while in the field. I can annotate issues in various ways (drawing markups, photos etc.) then distribute them to other parties, and keep track of how the issue is resolved.
LeeDpilot about Autodesk Construction Cloud