Project Set-up

[Anonymous]

Hi

I was wondering if someone could help me with correctly setting the height when setting up a project.

Currently our workflow follows a similar path this - (By similar I mean exact!!!)

Normally we add the existing Topography and OS data and align the Northings and eastings to the correct position. then add the height and specify co-ordinates. With the existing it's fine. 

The issue comes when adding the proposed! Eventually the proposed surrounding landscape is sometimes amended to suit which mean a new topo map. The problem is when this is added in comes in at the height above the existing. for example if the existing survey point is set to 43.50 metres the proposed map will allign fine on the X (Eastings) and Y (Northings) but will be 43.50 too high. Without unpinning and manually moving the proposed DWG downwards how can this be resolved so that it comes in at the correct height/level?

Thanks   

[Ilic.Andrej]

Painful subject...

Check these links:

Positioning

Define the Survey Point

Define the Project Base Point

By her majesty the Autodesk, the Survey Points and Pr Base Points should be moved when unclipped.

If this is true, there is no need to "Specify Coordinates at Point". You can just avoid that and these things that are bothering you will not happen...For the sake of example, I will just mention my project setup.

Our template has Pr Base Point and Survey Point matched with the internal origin. When we use those two famous points, we move them and set their elevation while they are unclipped. After that, we clip it again. We set Level Type / Elevation Base: Survey Point. We input real world altitudes for the level elevation and topography points. That's it...

[Anonymous]

Apologies, I forgot to add a link to the workflow;

http://autodesk-revit.blogspot.co.uk/2013/07/shared-coordinates.html

As I said the issue isn't with the existing topo/cad dwg. It's with where the proposed drawing comes in relative to height once the project has been set up

[Anonymous]

Thanks Doc

But I might be missing your point or you are missing mines. Un-clipping and moving the points is fine, we feel we need to use Specify co-ordinates at point as this gives us the Northings and Easting using in whichever OS/topo DWG we are working from. The issue isn't with the existing files. Once un-clipped and moved into the correct positions and re-clipped, that part of the process works fine for us. The stumbling point comes when adding the proposed drawings (not reloading from) as these will come relative too high

[Ilic.Andrej]

I really hope you find a solution for this and for me, it would be really interesting to see it. I had similar problems and this is why i decided to avoid "specify co-ordinates at point". Even before I import DWG drawings, I use (command "_change""_all""""p""e""0""")  to flatten them out. Then, I create everything in Revit all over again...