Reload link topography Revit

[Anonymous]

Hi everyone,

I have a problem if a reload a linked topography in Revit 2019. (linked topography form A360 DOCS, it´s a civil 3D topography). Firstable, I have moved the survey point in Revit due to have a shared site. In fact, when i link for the first time the topography in Revit it goes in the right position, so my revit is coordinated with the right geographical position. the problem is when i reload the linked topography, if i reload it; Revit move the survey point in a undefined position, i don´t know why. Someone have the same problem? thank you

[barthbradley]

So, lets see if I can unpack this.

1. You physically moved the Survey Point in your Project.  How? By entering coordinates?  Where did those coordinates come from? The Topo? 

2. When you first Linked in your Topo, it landed at the right spot.  How did you link it in? By Shared Coordinates? Origin to Origin? Center to Center? 

3.  Did you set up Shared Coordinates with the Topo in the Project?  How? Did you Acquire or Publish?  

[Anonymous]

Hi! Thank you for your response.

1. I moved manually the survey point. That is the same to use, coordinates at point

2.i used the link surface button of revit 2019, that it requires a published surface from civil 3D and it requires A360 DOCS. So in this way there is no possibility to select shared coordinates or origin to origin ecc.. revit do what he wants. But the surface goes in the right place, because I have moved correctly the survey point.

3. You cannot publish coordinates with a linked surface . See this https://knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2019/EN...

i think ink that there is a problem with Autodesk as usual.... 

[ToanDN]

Link the surface to a different revit file, then link that revit file in your file in order to publish/acquire the shared coordinates.

[Anonymous]

Thank you, tomorrow I will try this solution. I can be ok to acquire the coordinates, but I think that when I will try to reload the topography in the revit link it will change the survey point. But I can try! Tomorrow I will tell you!

[Anonymous]

Hi, I've tried your solution with the topography linked in the revit file. In generale i can say that it works. Is not the right solution, because Autodesk constrain us to buy A360DOCS to coordinate a surface between Revit and Civil 3D, and in my opinion is not a good thing, so i pretend that the reload button works properly. Anyway, to do this you have to:

- open a new file with survey point and project base point in 0.0.0 (i call this file REV_TOPO.rvt)

- link topography with the appropriate command (revit say that the topography is too distance.... so it use center to center option)

- save the file

- open the master file and link the revit file with the topography (REV_TOPO.rvt)

- move REV_TOPO.rvt in the right position (is not a good thing beacause is a manul operation), pubblish the coordinates to the REV_TOPO.rvt

- now the linked file with the topography (REV_TOPO.rvt) have a new site with the survey point and the base point moved.

it's ok. if i open the REV_TOPO.rvt and i reload the topography, it works properly.

but:

if you want to link another topography there are some problems. in fact now REV_TOPO.rvt, have the survey point and the base point not in 0.0.0 anymore, obviously we have pubblish the coordinates in this file. So if you reload another topography, it goes in the right position. But, then, if you reload it, Revit will move the survey point again!!! and every time you reload it , Revit will move the point. the only way is to create two site in "REV_TOPO.rvt", one site with the survey point in the right coordinates, and one site always in 0.0.0, Because if you link a topography with a site in 0.0.0 then it doesn't move the survey point every time you reload the topography. i don't know if it's clear. I hope that i will be resolve by Autodesk. thank you very much and if you have other suggestions, i will be very happy to receive them. sorry for my bad english XD 

[barthbradley]

I think you may find the information you are looking for in this thread – a pretty lively and informative one at that. Enjoy.

https://forums.autodesk.com/t5/bim-360-design-collaboration/shared-coordinates-not-possible-in-bim-3...

[Anonymous]

Thank you! Yes there is some information but not qith the linked topography error. But in general is very helpfull to understand all the process. I can try to post the same problem with some example in that forum, maybe is the better place for my post

[SeanMTA]

We are also experiencing the exact same issue. The Link Topography process is generally mysterious, not allowing us the select the Shared Site or anything, and then comes in using DefaultLocation as the site. 

Then upon sync or reload, the Survey Point (which is our originally positioned Shared Site) flies miles away. It is as if the Civil 3D surface commandeers the site location. This makes no sense because magically the surface was positioned correctly (with no options to change how it comes in) and then later it is moved.

This is a big problem because all of the other linked files are located in relation to the Shared Site (aka Survey Point), so they also fly away with it.

Any leads on this problem?

[Anonymous]

Hi, Autodesk say that the issue is resolved with Revit 2020 but i don't have tested it yet

[SeanMTA]

Stefan, do you have a link to this information?

Upon further research it also appears that the team must establish a close relationship between site point as established in Civil 3D and that which is then created in Revit. Many survey drawings refer to a location point that is usually very far away from the actual property. In Revit we tend to place our survey point at an intersection of the property line; partly also because Revit gets angry at us when we go further than 33km.

It appears that Revit automatically Aquires Coordinates from the Linked Topo when reloading, even after it comes into place somehow correctly.