What most people do not realise is that in Revit when you load a family that contains multiple types, Revit will basically duplicate the family to create each type. Therefore, if you load a family that is 500kb into a project that has 6 type variations, it will in fact take up 3mb of space in the project; even if not all the variants are used.
We can control which families are loaded by using a type catalogue, this will ask us, when loading the family which variants we want to use.
The type catalogue is a comma delimited text file with the same name as the family which contains all the values that change within each variation. It is actually very easy to create this txt file, although manually manipulating it can be a little more challenging.
Download my 'how to create type catalogues to control families instances' tutorial and I will talk you through both methods. Simply fill in the form below and you will be directed to a page with a download button.
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