Setting Strong And Weak References; Dimensions With Families; Automatic Sketch Dimensions - Autodesk 24000-000000-9860 - Revit Architecture - PC User Manual

Setting Strong and Weak References

This procedure changes references for selected line instances. It does not set reference values for any new
lines.
1 On the Family Editor Design Bar, click Lines or Ref Plane and sketch a line or reference plane.
2 Select the line or reference plane and click
3 In the Instance box of the Element Properties dialog, set the value of Reference to Strong
4 Click OK.
You can sketch lines and set them to strong references. To create strong references for solid geometry, such
as extrusions, sketch reference planes and set them to strong references. Then sketch the solid geometry to
the reference planes.

Dimensions with Families

Automatic Sketch Dimensions

Revit Architecture creates automatic sketch dimensions in the Family Editor to define where every sketch
line is, relative to reference planes or other sketch lines. The automatic sketch dimensions implicitly constrain
sketch lines, until you explicitly dimension those sketch lines. As you add dimensions, you are telling Revit
Architecture your design intent.
Effects of Automatic Dimensions on Your Geometry
Until you are aware of automatic sketch dimensions and that they are constraining your geometry to reference
planes, you may see some unexpected behavior. The automatic sketch dimensions are Revit Architecture's
way of solving how to grow or shrink your geometry based on changes in value of a family parameter.
For example, you have added a rectangular window to a fire door that has a labeled dimension for the width,
but you have not dimensioned the window.
356 | Chapter 8 Creating Your Own Components (Families)
Reference. For reference planes, set the value of Is Reference to Strong Reference.
NOTE By default, Revit Architecture sets the reference property for all reference planes and sketched
lines to Weak Reference.
.