How to attach columns to a roof (Attach Top/Base)

If you need to attach multiple columns or walls to a roof, you can attach those elements quickly & easily using “Attach Top/Base”. This short video clip shows how to attach columns to a roof using “Attach Top/Base”.

Dimensioning between circles in Revit (Center Mark Visible)

You can place a dimension between circles using the parameter called “Center Mark Visible” because you cannot snap center points of circles.