How do you add transparency in Revit?

You can add transparency to elements in Revit by overriding their graphics in the view. Here's a step-by-step guide:

1. Select the elements you want to make transparent. You can select multiple elements at once.
2. Right-click on the selected elements. This opens the context menu.
3. In the context menu, select "Override Graphics in View", and then choose "By Element". This option allows you to change the display properties of the selected elements specifically in the current view.
4. In the "View-Specific Element Graphics" dialog box, locate the "Surface Transparency" section.
5. Adjust the "Transparency" slider or enter a value greater than 0. A higher value means greater transparency. Experiment with different values to achieve the desired effect. A common starting point is around 50.
6. Click "Apply" to preview the changes and then click "OK" to finalize.

This method overrides the element's graphics only in the current view. The element will retain its original appearance in other views.

Alternatively, transparency can be controlled via materials:

1. Select the element(s) you want to adjust.
2. Go to the "Properties" palette.
3. Click "Edit Type".
4. Locate the "Material" parameter for the element's category.
5. Click the "..." button to open the Material Browser.
6. Select the material assigned to the element.
7. Go to the "Graphics" tab in the Material Editor.
8. Adjust the "Transparency" slider.
9. Click "Apply" and then "OK". This method affects all elements that use that material in all views.