This gave me the clue that the architectural model was a detached central model. This means that the model has been detached during an eTransmit process.
It is hard to find technical information regarding the state of these models. From what I’ve figured out, the model is in a state where it is technically “read only”. So if the linking process requires accessing or revising anything in the linked model, you will get an error. In this case it was an issue with permissions to edit shared coordinates.
Let’s talk a little about Plan Regions in Revit. In a nutshell, this tool helps to show areas of a View that may need to deviate from your view’s View Range. Aside from the common uses for this in architecture, mechanical designers can actually get their risers to display properly when using a vertical elbows.
Mechanical and plumbing Revit Designers have undoubtedly run into issues with their ducts that turn vertically if the elbow is outside of the view’s View Range. Revit does not cut through the elbow properly, if it cuts through it at all. Note the image below is missing the “X” within the riser to graphically designate which system the duct is on.
The issue is caused by the View Range settings for your view. Don’t fuss with the View Range settings for the entire View because tweaking View Range for one riser can be catastrophic for your the rest of the elements on your View.
The Solution: Use a Plan Region
The steps below outline a simple workflow to fix this issue. The goal is to create a Plan Region that encompasses the shaft’s view range requirements. Note that this technique also works with pipe elbows that do not graphically show the proper up or down symbol.
First, take note of the elevations that you need where you need to adjust your view range for the Plan Region.
Next, go to View > Plan Region and draw a shape around the area you would like the View Range to effect.
Important: Your plan region needs to encompass the entire riser for this to work. If the outline of your Plan Region overlaps the duct, it will not be effected.
You may want to extend your Plan Region a little further out than the duct itself. Note that the Plan Region outlines do not print.
Now we must adjust the View Range for the Plan Region. With the outline of the Plan Region selected, go to the View Range setting in the Properties window.
Adjust your View Range accordingly based on your measurements from step one.
The riser should now display the appropriate symbology within the duct that is turning up or down.
Today I was challenged with figuring out why a revision schedule from a titleblock family was not showing the revisions on the sheet that the titleblock was placed on.
I found a subtle setting in which I’ve never used before – it is to set a fixed Height of the revision schedule. I suppose this could be useful if you would like to limit the number of rows in a schedule. Apparently, this can restrict your revision schedule to the point where it won’t display any revisions whatsoever.
The fix was to change the Height setting to “Variable” rather than “User defined”.
I remember my early days of Revit and working with architecture that had several angles in plan view. Cutting a section without knowing the exact angle is difficult in Revit and the Align tool currently does not work on section lines.
Here is a workaround to rotate your sections to align with any angle within Revit.
1) Draw a straight section
Make sure it is perfectly straight or this method will not work.
2) Use the rotate tool
Select the section from plan view and click Modify > Rotate.
3) “Place” your center of rotation
This step is where the magic happens. Once you choose the Rotate tool, there is a checkbox on the Options Bar that says “Center of rotation”. Click the “Place” button.
4) Pick a point
Choose a point that snaps to an element that has the angle you would like to reference. In this example, we will use the midpoint of the elevator wall.
5) Create a rotation reference
After you’ve picked your center of rotation, you need to create a starting angle for the rotation. This reference line should be parallel to your section line. In this example, it is horizontal.
6) Snap to the proper angle
To complete the rotation, snap to the line that you are using as a reference.
7) Done and done
You have successfully aligned and rotated a section to match an angled element in Revit!
Hosting elements to reference planes in Revit is a technique used by many, but only fully understood by few. The most overlooked part of the entire process is drawing the reference plane itself. Did you know that there are differences between drawing a reference plane from right to left versus drawing one from left to right?
I recently came across a post by Cadline Community regarding reference planes and noticed some incorrect information. They state that the beginning and end of a reference plane is left to right, however this is incorrect. Reference planes should be drawn from right to left or the plane is technically upside down.
A Demonstration of Upside Down Reference Planes
In the example, I’ll demonstrate the difference between modeling reference planes from left to right versus right to left in Revit.
Let’s start by modeling our planes.
For demonstration purposes, I will name the two reference planes accordingly so that when placing my hosted elements I’ll know which is which.
Now we will pace a hosted family onto each plane. Note that we are using Autodesk’s air terminal family from the default library.
Notice that the diffuser that was placed on the “Right to Left” reference plane is upright and hosted properly. The air terminal that was placed on the reference plane drawn from left to right is hosted upside down.
In conclusion, it is important to note that the direction that you draw the reference plane in Revit matters. Always draw the planes from right to left. Although it is easy to rotate reference planes that are upside down, elements that are already hosted to said reference planes may behave erratically.
Bridging the gap between you and your building information model.