A simple detail item has been created that is using a formula.In this case it’s a detail item intended to represent a 2D downpipe. The radius parameter controls the circle size for the various type sizes but I wanted drafter’s to have the option of editing the diameter value as well if that was easier for them.
STEP 1: Create the masking region and assign radius constraint
STEP 2: Create parameter link using a formula in Family editor
STEP 3: Create Catalog text file:
STEP 5: Test sizes are correct based on family types created
A = 100mm Diameter
B = 150mm Diameter
STEP 4 REVISITED: Edit Catalog file to include Radius (Since diameter and radius values are interlinked)
STEP 5 REVISITED: Import family into project file
STEP 6: Test sizing
If you wish to control a Revit Catalog family with a parameter that is affected by any formula then all associated parameters that relate to the primary parameter need to reside in the catalog text file.
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