Measure LxW of area boundries in Revit

Revit
,
1

Hello Dynamo Community :slightly_smiling_face:

I need to include the LxW of several area boundries in Revit (Not rooms, there’s no walls, etc). I am having trouble figuring out how to revise my dynamo script (See picture attached and workflow break down below).

For context

  • I only have area boundaries, I dont have any walls, etc.
  • I have created the Area_Length and Area_Width in my project parameters.
  • The areas are not all aligned to the X-Y axis, several are tilted.
  • Most areas are rectangles but some are irregular

How can I correctly calculate Area_length and Area_width for rotated or irregular areas?

Workflow I tried:

  1. Categories → Select Areas

  2. All Elements of Category

  3. Area Boundaries → Extract boundary curves for each area

  4. Curve.Length → Get length of each boundary curve

  5. List.MaximumItem → Assume this is the Area_Length

  6. List.MinimumItem → Assume this is the Area_Width

  7. Convert Between Units → Convert from feet to meters

  8. Element.SetParameterByName → Write values to Area_Length and Area_Width parameters

Looking forward to any comments, suggestions you may have.

'251029 Dim calculation test 2_2025-10-29_03-30-24
'251029 Dim calculation test 2_2025-10-29_03-30-243216×1004 185 KB

Thank you!

2

Hi @Jennyvla ,
Could you please share a sample file so we can analyze and improve the workflow?

3

The graph here is for dimensioning rooms, but you can likely modify it without much effort.

I think it might be a good fit here for the odd shapes (I.e. an area with a recessed alcove might report the depth of the alcove as the width since that is the shotest line and then the parameter thinks you have a room with an area of 200 but dimensions of 20x1.

4

No need to map.

image
image1506×559 137 KB

Depending on your Parameter you might need String from Object too.

PS
Next time pin your preview bubbles. That would help a lot :sweat_smile:.