Position the Parts of a Pipe or Duct Line Using Constraints

Piping Design

Add a pipe or duct line in, approximately, the correct position. Refine the pipe lengths and their relative positions using geometric constraints.

Begin adding constraints by first fixing the position of the parts that must not move. For example, fix the positions of the pipes beginning and ending the pipe line.
Fix the direction of a part if you wish it to retain its original direction. The direction of a pipe line added in the vertical direction (Z axis) is the only one that will be automatically fixed.
Add geometric constraints between parts. For example, add a distance constraint between the center lines of pipes, or between a pipe center line and some other building component.
When a pipe or duct line is added, a grip point linkage is automatically created between the parts. You can also add a grip point linkage with a corresponding function in the Constraints menu (in a model).