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Thursday, January 08, 2009

Seeing Things Above

Revit has some great tools to help us view a model from many different positions. We can have plans, ceiling plans, elevations, sections, 3d views or 3d sections. This enables us to view what we want when we want to see it.

I get lots of questions concerning the View Range in the View Properties. The View Range will allow you to change your Cut Plane and set your upper and lower limits. This is very helpful, but you need to understand one key rule: Revit will not actually show an item unless the view is cutting through that item.

A floor plan is typically a plan that is looking down and is cut by default 4'-6" above the level line. This means that a light fixture that is 8'-0" above the level line is not being cut by the cut line, which means that the light fixture will not be seen in the floor plan. One of the most common questions I get is "how do I get Revit to show the something on the ceiling on a floor plan?"

Here is a quick fix to be able to show light fixtures in your floor plan. Simply open the light fixture in the Family Editor, and draw a WHITE Model line from the fixture to the level line. This will cause the cutline to cut through the white model line and then show up on the floor plan. It should be white so it will not show up on the screen or on a plot.

To create the Model line, it works best to draw it in an elevation view. Once it is drawn you will need to create a new subcatagory in the Object Styles under Light Fixtures and assign that catagory to use a white line.

Then you will need to change the line to be assigned to the new sub catagory.

Load the light fixture back into your project and your light fixture now shows up in the floor plan. You may also want to override the graphics of the linework for the light fixture in the floor plan to be a hidden or dashed line.

This is a quick and easy way to show items above that are not being cut by the cut plane.


Anonymous said...

Why white line, when <invisible> is the way to go...

Mike Massey said...

Invisible would work too. I like to have it listed as its own object style so I know that it is something that I added.

espicer said...

This works, unless your ceiling is not within 4 feet of your default height in the family. Do you know a way to AUTOMATICALLY adjust the height of the "white line" to the height of the ceiling? Is there a parameter formula that is "=ceiling height" that you know of?

Mike Massey said...

I would add a dimension to the white line and assign that dimension to us a new parameter. You can then change that parameter if you need to back in your project to lengthen the white line.

Todd M. Shackelford said...


This is a sweet tip. So I'm just going to go ahead and steal it. Moo ha ha ha.