How do I Edit the Dimensions of downloaded revit families?

[EKAMAN]

Hello, 

I am working on a project and circumstances have necessitated that we adjust some of the sizes of the switchboards we downloaded as revit families. I have attempted it myself in revit 2023, but the switchboard sections are never aligned correctly and usually the sizes aren't synced with the parameters within the Revit family. Has anyone successfully done this or have any tips that could help? Thank you!

EK

[Manon_Chaboud]

Hello @EKAMAN, thank you for your post, we'll come back to you!

[Manon_Chaboud · Accepted solution]

Dear @EKAMAN, 

Thank you for reaching out regarding your Revit project. Adjusting the dimensions of downloaded switchboard families can be challenging, especially when the original family lacks parametric flexibility or proper alignment constraints. Below is a recommended approach to ensure accurate and consistent modifications.

1. Open the family in the Revit Family Editor

Begin by opening the .rfa file in the Family Editor. This allows you to inspect and modify the internal structure of the family.

2. Review existing parameters

Navigate to Create > Family Types to identify any existing dimension parameters (e.g., Width, Height, Depth). These parameters should ideally control the geometry via reference planes and labeled dimensions.

3. Inspect Reference Planes and Constraints

Ensure that all geometry is properly constrained to reference planes. Misalignment often occurs when geometry is dimensioned directly rather than being tied to reference planes. Use the Align tool and Lock constraints to maintain consistent positioning.

4. Modify or add parameters

If the family lacks the necessary parameters:

- Add reference planes to define the desired geometry boundaries.

- Apply dimension labels to these planes and link them to new or existing parameters.

- Ensure parameters are set as Type or Instance depending on your project needs.

5. Check nested families

For switchboards composed of multiple nested components:

- Open each nested family individually.

- Confirm they are shared, properly constrained, and support parametric resizing.

- Reload them into the host family after adjustments.

6. Test fexibility

Use the Flex tool in the Family Editor to simulate parameter changes and verify that the geometry responds correctly. This step is crucial to prevent misalignment in the project environment.

7. Load and validate in project

Once the family is updated, load it back into your project and test it in context. Confirm that the dimensions reflect correctly in schedules and tags, and that visual alignment is maintained.

-> If you’d like, feel free to share the specific .rfa file you're working with, and we can assist in reviewing or restructuring it for better parametric control!

Have a good day 🙂