Project base point and Survey point - Need help

[ennujozlagam]

Hello Guys, Just want to know what is the easy way or suggestion  to move the arch model align to the survey point of mech. model. I cannot just move the arch model ( whole building ) because of the reason i have a lot of grouping elements and some level inside the model. When we first started this building we dont have any survey plan to follow so i assumed that my survey point is level at 110.00 m. The problem arise when i tried to link the mep model into my arch model they are not in the same level mep model is below the arch model, is there a way to do this. Due to the confidentiality of projects i cannot screen shot the whole model and post.Please find attached. thank you in advanse.

[constantin.stroescu]

If I understood you well you have  Revit Link placed at a corect height  and your project is not...

In this case , I think , you can make the adjustment in two steps:

1. STEP1 - Relocate Project: in an Elevation View , from Manage > Relocate Project  - click on Level 0 Line and drag it up to the required height - the whole will be moved at this new location
2. STEP 2 - Click on the Linked File and using Move , drag it back down the same distance value you have used in STEP 1

it has to work....

[ennujozlagam]

hi Constantin, thank you for your reply. I’ve followed your instructions but it seems I can get it right. Just want to ask some question why do I need to move the mep link file to my arch model? At the moment my project base point arch model is n/s-w/e is 0,0 elev 110000.00 survey point is n/s-w/e is 0,0 elev 110000.00. While the mep model n/s-w/e is 0,0 elev 110000.00 survey point is n/s-w/e is 0,0 elev 0,0. To make story short the mep consultant wanted that when arch model link to mep model they must be in the same origin but my model is above to their model. which means i need to move my arch model to match the mep model in the same origin. thank you.

[ennujozlagam]

hi Constantin, just to add-in the height difference  between arch model and mep model is 110000mm. how im going to move my building down to match the mep model. thank you.

[constantin.stroescu]

Try this:

• in an Elevation View , click on Level 1 line :Properties > Edit Type > Type Properties > Constraints > Elevation Base - Value - change to Survey Point
• Manage > Project Location > Relocate Project - click on Level 1 line and drag it down to 0,00 - the absolute elevation turns to 0,00
• if the Revit Link ( suppose it is the terrain ) is alreaday inserted into your project in the corect position then you have to proceed ,as described in my first post, move it back ( select and Move)

https://screencast.autodesk.com/Main/Details/6c57e3f1-3e56-46a6-aec8-1f854a194bdc

[ennujozlagam]

Hi Constantin,thank you for your reply, i followed your instructions and your screencast but when  i link the mep model to my arch model the mep model still below my arch model of elev. 110000. I tried different approch i open the mep model and link my arch model and check my arch model and the elev. become 220000. There is still difference of 110000mm in height between the two models. Is there still a solution to match these models with same origin if they link to each other? thank you again.

[constantin.stroescu · Accepted solution]

In order to transfer coordinates from one file to another usualy I use Shared Coordinate:

Supose there two file ARCH1 and MEP1 and I want to gather MEP1 coordinates into my ARCH 1 file:

• MEP1 file is open : Link Revit and insert ARCH1 file into 
• select the Link > Properties > Other >Shared Site - click on <Not Shared> Share Coordinates > check Publish the curent shared coordinate system to ARCH1 - and then click on button Change > Location Weather and Site > Site -Duplicate the existing Internal and create a new name Position  - ok , then press Reconcile button ( the ARCH1 file has to be closed)
• close MEP1
• Open ARCH1  - from Manage > Project Location > Location > Location Weather and Site > Site > choose the Position aquired from MEP1 and press button Make Current
• now , in ARCH1 there the coordinates stated in MEP1..

https://screencast.autodesk.com/Main/Details/9f512091-47a4-42af-be5e-d8bc570e5beb

[ennujozlagam]

Hi Constantin, Thank you again. once again i followed your instruction but stiil when i link mep still below 110000 of arch model and same vice versa. they have still difference of 110000. i think the mep model they start from survey point from 0,0 and move the project base point to 110000 level. Which i didnt do it when i started my arch model, thats why they have a difference of 110000. If there is no more solution for this (hoping still have) i dont have no choice but to move my arch model down by 110000 to match the origin of 0,0 of mep model. But this is a lot of work because of my grouping elements in the model. I tried partially to move down the model and there are a lot of morning like delete instances etc, etc. What do you think have  still a solution?

Thank you.

[constantin.stroescu]

I do not understand why RELOCATE PROJECT doesn't work for you...

• Relocate Project >drag it down with 110000. - with Constraints - Survey Point activated
• then, because the Link Revit file inserted has also moved down with 110000, simple select it in Movit it up 110000 to be back in its original position 

[ennujozlagam]

Hi Constatin, Thank you very much. i really appreciated all the time and efforts in helping me to solve this problem. Im not too sure if i explained my problem well or misunderstood my english grammar.

I did your instructions again. i opened my arch model and link the mep consultant using Positioning : auto -origin to origin, went to south elevation , in my south elevation i can see that my arch model is above the link mep model by 110m. i go to manage select  Postion - relocate project (set survey point and constraint) pick 1st storey level and move by 110m down. And then move the mep link model up by 110m. Now both modesl are in the same level position. I save the arch model. detach the link mep model and save it again. Close the arch model. Open again the arch model and link again the mep model by auto-origin to origin. and went to south elevation and its the same as before my arch model is above mep model by 110m.

The main problem is that mep model and arch model are in the different coordinates. The mep consultant wants that when the link the arch model should be in the same coordinates for both models and vice versa into arch model.

Regards.

[SteveKStafford · Accepted solution]

Usually the architecture firm sets the survey relationship and the other trades inherit your choices by using Acquire Coordinates.

If I understand what you've been through so far, you built your model at a specific elevation above sea level, which is either the correct ground floor elevation, close enough or just an arbitrary value. The MEP engineer built their model at a project elevation where ground floor is zero, without any concern for a reference to sea level elevation.

At this point your model is at a site related elevation, whether accurate or not and the MEP is not, yours is higher than theirs.

They need to move their model into alignment with yours... X/Y/Z. It sounds like you are already aligned X/Y? If not they should move your model so that it is. Once they've done that they can use Acquire Coordinates to match your settings. They leave their copy of your model linked and use Reload From when you send them an updated version. If they just replace their copy with the newer version by overwriting it then they can use Reload.

In the meantime (until they have time to do this and send you a new file), leave your model as it is. Import their model and move it into the correct position (X/Y/Z) for reference only. When you get their updated file you can import it again using Positioning: Auto by Shared Coordinates. It should line up automatically at this point.

If you'd like, run a test. Build a simple A model at the elevation you are using. Build a mockup for the M model at their elevation. Link the A model into the M model, move the A model down to the M model elevations and use Acquire Coordinates. Then return to the A model and link the M model via Shared Coordinates. It should line up X/Y/Z. If that works correctly you are ready to try it for real in your project file and with the engineer.

Good luck!

[ennujozlagam]

Hi Constantin  & Steve, Thank you, What i did was Acquire Coordinates>Project Relocate a Shared Coordinates. It Looks fine now. shalom..............

[SteveKStafford]

Just keep in mind that you are deriving your coordinate relationship from them. This means you are at their mercy of they changes things later, either by accident or intentionally.

[ennujozlagam]

Yup i understand that. It doesnt matter and no worries since they are the lead consultant. Thank you....shalom