Annotating Your Design - Mastering Autodesk Revit Architecture 2015 - page 780

3. Click Ok to close the dialog box.
You'll see the dimension string with Imperial units above and metric units below
(Figure 18.43).
Figure 18.43
Alternate units
in the model
Annotating with project and Shared parameters
Every element in a project has a list of parameters. Some of these parameters, such as Assembly
Code and Mark, are common parameters that are assigned to almost all object types. Others,
such as Length, Height, and Volume, are unique to specific element types. Despite the plethora
of default parameters, there are situations where you may need to add custom parameters to
elements. These custom parameters, like the default ones, can be tagged and scheduled.
Depending on how you'd like to use a custom parameter, you can add them to your elements
in a few ways:
◆ If all you want to do is schedule the new parameter, you have a couple of options:
◆ Add the parameter directly within the schedule itself. This will add a new parameter to
your element family. Adding a parameter using this method adds it only to the element
family in the schedule. For example, say you want to schedule the sound transmission
class (STC) of a wall. You could add this property directly within the wall schedule and
the new parameter would be available only to objects in the Walls category.
◆ Add the parameter to the project. Using this method, you can still schedule the new
parameter, but you will have the option to add it to multiple categories. So, if you
want to add a parameter for Unit Cost, you can add that to both your door and win-
dow categories at the same time.
◆ If you want to be able to both schedule and tag your parameter, you will need to create a
shared parameter . This parameter is created as part of a separate file that is shared among
the tag family, the element family, and the project. An example of this kind of tag might be
for door security hardware. You can create a parameter that is assigned to a door family as
well as a door tag that will allow you to designate whether or not a door has a card reader
to gain entrance to a room.