We are about to start a large multidiscipline project, we are going to build a new water-supply for a city of 500.000 citizens. It includes everything, geospatial, civil, tunnels, pipelines, some buildings with structure, electrical, hvac, mechanical and plumming.

I am going to write a CAD-manual for this project to ensure that everybody followes necessary rules to ensure that everythong collaborates smoothly. I must admit I have never done this before, at a project that includes that many different disciplines.

Does anybody have some suggestions to how I should attack this, wich elements are important to remember, examples, etc. etc.? I would be very happy for any help...