There are often times when you want to change the elevation of a level to a value other than 0. Though you could physically move the levels up, this is not the ideal way to handle this situation. Revit can tend to get cranky when the model is too far from zero. So how do we set our levels to read a different elevation without physically moving them?
If you look at the type properties shown for the level that is selected, you will see there the Elevation Base is set to Project. You have another option to set it to Shared. Setting the value to Shared will allow you to specify coordinates at that level to read a different value.
How To Create A Shared Level
The first thing we want to do is select one of the levels, from the properties dialog select Edit Type, then duplicate the current level type and name it Shared. Change the value for the Elevation Base to Shared (prior to 2013), for 2013 change it to Survey Point. Select OK.
You will notice that the value of the level is still 0. It will remain 0 until we specify different coordinates at that location or if we were to acquire the coordinates from another file, but we will discuss that in another blog.
How to Specify Coordinates at a Point
To specify the coordinates go to the Manage Tab, Project Location panel and from the drop down under coordinates select Specify Coordinates at Point
In your view, select the level and it will bring up the dialog shown below
You will notice that your other levels have not changed, that is because they are still set to the original level type.
Keep in mind that you can only have one shared coordinate system, so coordinate with other team disciplines to determine what should be done for your project.