Revit Coordinate System + Revit 2021 (w/ Nick from RevitPure)

Grab your favorite beverage and join me for a little hangout/Q&A. This week I will be joined by Nicolas from RevitPure.com and we will be talking about the Revit coordinate system, Revit 2021, and more!!
For more tips, tricks, and tutorials on all things Revit and BIM: www.TheRevitKid...
TimeStamps
0:00 - Intro
0:24 - Nick Introduction
6:15 - Difference between the Three Coordinate Origin Points
13:51 - Using Shared Sites
19:23 - Moving and rotating points
23:02 - Shared coordinates in BIM 360 Linked Model
24:27 - Moving the Survey Point
24:49 - Relinking the Architecture File
28:12 - Internal Sharing for Internal Origin
29:25 - Sites with Multiple Buildings
35:19 - Linking Structural File
41:04 - Navisworks and Internal Origin
46:04 - 20-Mile Limit
48:24 - Internal Origin as Topo Surface
54:01 - New Features in Revit2021
54:44 - Ray-Tracing
58:23 - Slanted Walls
1:01:31 - Generative Design
1:08:32 - Revit 2021
1:12:27 - BIM After Dark BETA Launch
1:15:19 - BIM After Dark Community Site
1:18:00 - Nick's Revit Pure Pamphlets
1:19:41 - Outro
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My Main Revit Laptop (Origin EVO16S) - www.originpc.c...%
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Greatest Sketching Marker of All Time (Sign Pen) - amzn.to/3ceAukN
** Some of the above links are affiliate links, meaning you don’t pay anything more but I may get a small commission for a sale… Cheers! **

[@DanielStineNow]

Thanks, great info shared in a fun context!

[@48VAC]

Great video. Wish I could have joined live

[@vinayck855]

After annotations,if we change the cordinates & building angle ...did all annotations will disturb or it will remain same ??

[@cathychoi6959]

our rail way project just have warning the drawing is 30 miles away from origin

[@TheRevitKid]

Yup…sounds about right

[@mackyvalakas9358]

Wow, two of the best in the same video!!!
Gentlemen - I've just upgraded to Revit 2021 & I have noticed something funny. Would really appreciate some help on this minor issue.
Scenario:
In my elevations, I use the realistic display with a visual graphics filter that gives topography a white solid fill cut pattern.
Issue:
Since the upgrade to 2021, realistic elevations cut pattern is grey (even with filter that makes it white).
Is this a bug of some sort? I have checked everywhere in the settings and they are exactly the same as my 2020 models.

[@TheRevitKid]

Haha thanks for the kind words! I would assume this has more to do with the rendering material? Either that or your site settings... This post talks about those: therevitkid.blogspot.com/2018/02/revit-tutorial-missing-secondary.html

[@mackyvalakas9358]

@@TheRevitKid You're very welcome! Thanks for the link but no, this is not it. Revit 2021 Realistic view has automatically overriden my cut pattern in elevation.
I'm happy to shoot you a quick video?
In the interim, trial it and see if it's the same for you.
FYI - even when I override graphics in view, it still does not show a white solid fill cut pattern.
Seems that those who liked the initial comment may have experienced this also.
Only #TheRevitKid can sort this one out!!

[@TheRevitKid]

@@mackyvalakas9358 Sorry, I didn't fully understand your question. Now, I think I know. The cut material of Topography is going to be controlled by the "Material" column under objects styles. By default this is set to "Earth" in most templates. Check that out...

[@mackyvalakas9358]

@@TheRevitKid I think I did, off memory. I will check this again.
Once again I would be curious to see if you are having the same issue and if you are particularly able to have a white solid fill pattern as a cut pattern for the realistic view in your elevations
Check it out and let me know if you can!

[@TheRevitKid]

@@mackyvalakas9358 I just did it in 2021. Went to an elevation view, cut the site with it, and was able to control the material of the cut using object styles.

[@raquelduarte5718]

Great Talk! Thanks for your time guys!
But I still have a question.
So the Survey Point is not supposed to express the world coordinates?
I've always thought of it like that. That's why I would always unclip and move the Survey Point closer to the Project Base Point.
How would you represent the world coordinates in Revit then?

[@timothypuccetti3503]

Autodesk Revit documentation actually does describe Survey points to be used to describe real world survey points. I would always start learning Revit coordinates by first using the Autodesk Knowledge Network documentation web pages before you watch any tutorials. They are backed by people actually wrote the software. And, it gives you the definitions of terms and the foundations of their intended use. First, understand that a Project or Survey point has its own associated invisible coordinate system that can be clipped or unclipped from the Project or Survey point itself. In Revit 2020.2 I believe there is no longer a paperclip available for the Project Base Point. It is always unclipped to lessen the confusion described below. Relocate Project has taken its place because they had the same effect. The Internal origin appears to me to simply be the same thing as the origin of the Project Base Point coordinate system.
knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2019/ENU/Revit-Model/files/GUID-E67ED082-2556-475B-84A7-4605329F612F-htm.html
I find it helpful to think of moving the Project or Survey points clipped or unclipped to be like the following:
1. Moving the Project or Survey point when clipped: moves the Project or Survey point along with that point's associated coordinate system (its invisible grid) together. So, for example moving the Survey point while clipped moves the Survey point and the entire Survey coordinate system (its invisible grid) together. Thus, the Survey point has not moved relative to its own survey coordinate system. But the whole survey coordinate system has moved relative to any other coordinate system (Internal or Project system).
2. Moving the Project or Survey point when unclipped: moves the Project or Survey point only while leaving its associated coordinate system behind. This has the opposite effect as above. The point moves relative to its own coordinate system. But other coordinate systems are not affected because you left the associated coordinate system in place.
As soon as you move the Survey point while it is clipped then you have two unique coordinate systems active with differing origins. Since Revit 2020.2 you can no longer move the Project base Point while clipped. You can Relocate project instead. I imagine this will have the same effect, but hidden from normal awareness.
The origin of the survey point coordinate system should ideally be the origin of the actual coordinate system zone used such as a State Plane system. When you import an AutoCAD drawing that has an assigned projection coordinate system and choose Acquire Coordinates then that information is imported into Revit. Without doing that Revit doesn't seem to have any knowledge of a real coordinate system stored internally. So, inserting an AutoCAD or AutoCAD Civil site drawing with a saved coordinate system seems to be the most accurate way to go.
There is an Autodesk tutorial on understanding Revit coordinate systems linked below. You are encouraged to try out moving the Survey and Project points while observing the spot coordinates using the instructions and files linked below.
knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2019/ENU/Revit-Model/files/GUID-AFCA59C6-9E00-4576-BCA0-63EB3342B68C-htm.html
When you read or watch tutorials on Revit coordinate systems, even by competent people, you will see contradictory ideas, workflows and mandates that you MUST follow. Many of these ideas are just incomplete opinions and nonsense. Revit actually does describe Survey points to be used to describe real world survey points. I would follow the tutorial linked above and read the documentation on Autodesk Knowledge Network and learn what makes sense for yourself. Then, when you watch other people's videos you can decide for yourself if their workflow and mandates are good for you. There are many ways to utilize shared coordinates. But, if you just try to follow people's theories without understanding what you are doing then it becomes another guessing game whether you are just messing up the coordinates.
knowledge.autodesk.com/support/revit-products/learn-explore/caas/CloudHelp/cloudhelp/2016/ENU/Revit-DocumentPresent/files/GUID-2B5BF400-45F9-4475-8783-1D57D1E8DBEC-htm.html

[@murrayekong7669]

I think you are wrong in a small way about the survey point representing the linked reference for linked files when places far away following a WGS system. The survey points even if it is far away with Northing and Eastings coordinates from a WGS system CAD file can still re[resent a link reference point.

[@TheRevitKid]

I am not sure I fully understand what you mean here by re-resent the link?

[@murrayekong7669]

@@TheRevitKid I meant that the Survey point can be far away from the project objects to represent the origin of the world coordinates. This means that the survey point when placed at the world 0,0,0 origins should have their labels also reading 0,0,0 after it has been clipped.

[@iftekharkhan8879]

At 27.20 time when u share a site ..u chose the position to manual internal original.i have revit 2018 there r no option of internal origin?? So i can do ..which posiy should i prefer...thanku sir

[@eastudio-K]

some quick questions,
1. where is the documentation done with linked files?
2. project file there is no site, and no pad to cut into topo im assuming pad is done after the fact in site model? how do i see topo in project file?

[@bimpure]

Yes, the pad would be done in the site model in this case. You can link the site model on the project file by using the "Shared Coordinate" positioning option.

[@eastudio-K]

thank you!

[@petarppenchev]

@@bimpure Sorry for using this answer but I wanted to tag RevitPure page = ) I am writing about the "Relative" option for the Spot Elevation. When you set the Elevation Base to "Relative" you can change the reference elevation before placing the Spot Elevation from the options ba - just below the ribbon menu. We are using this option to report Clear ceiling height on RCP plans. s8.gifyu.com/images/SpotElevationRelative.gif