The 2D plan covers all site tracking on PDF plans, with no volume limit: unlimited projects, observations, forms and storage. It is billed per user and per month (reduced rate with an annual commitment) and applies to all your projects.

The 2D plan does not give access to the model viewer: a Revit, IFC or Navisworks file imported into the CDE shows “3D visualization is not available for current user account type”. Upgrade to the 3D plan to open it.