Manage Place & Location

[Davied2]

Hi all

I have a site plan imported from autocad and have set theaquired the co-ordinates from the acad survey so that in revit my spot coordinates are correct.

I have created a topo surface from the 3D survey - all fine - looking good.

Also I have imported two revit building into my site plan, positioned them on my site - published the co-ordinates (Building 1 & Building 2) so that when i go into my revit building elevations I can see the level height on site (using manage place & location)
BUT...... I knew it was going too well.

The building position in Z elevation are correct and if i check the spot co-ordinate (Easting/Northing) in the site plan they are correct....

But if i go into the site models and check the site co-ordinate (Easting/Northing) they are different to their position in the site plan even though I have set the manage place and locations to the correct (Building 1 or Building 2)

Anyone have any ideas - its driving me crazy.

Thanks - Dave

[LRaiz]

Did you publish Revit coordinates to Autocad dwg or acquired dwg coordinates into Revit. If you want to use surveyor coordinates then you should have acquired not published.

[Davied2]

Thanks for reply Leonid

Because I am using true and project north I have had to use the specify co ordinates at a point tool in my revit site plan to ensure my easting / northings are correct based on the imported AutoCad survey.

So the site plan easting/northing are correct - I import / link a building into my site, move it in X,Y & Z to where I want it to be then publish the co-ordianates back to the building model under the name "Position of building 1"

When I am in the building model and use the co-ordinates "Position of building model1" the elevation is correct but in plan the easting and northing are incorrect.

Please does anyone know what I am doing wrong.

Dave

[LRaiz]

It is not clear what exact steps did you take. Depending on these steps dwg could have moved together with revit project when you specified coordinates at a point. I think the only reliable way to inherit surveyor coordinates from dwg is to use acquire coordinates command.

Given the amount of confusion surrounding this topic may be I should write a tutorial.

[Davied2]

Once Again Leonid thanks for the reply.

I often use the aquire co-ordinates function - work fine as long as you are not using True North & Project North.

I have found that if a survey is imported/linked into Revit and True / North are being used if the view is set to show ture north (therefore survey looks correct on screen) when you use aquire co-ordinates the survey rotates itself for some reason.

This is why I have used specify co-ordinates at a point.

I am still looking into this - again many thanks for your input - if anyone has any other ideas why this is happening please let me know.

Regards

Dave