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How to change Pipe segment Diameter?


New member
I would like to know how can I change the Pipe Diameter from a piping segment.

I made my design not using the "Spec Driven" option.

I tryed going on "Modify", in modify Options marked "Line Stock", then I selected the segment, and finaly on the "Modify Linestock" I changed from the 4 inches to 3 inches as I needed. The problem is that the Ok button is greyed-out. I even tryed to create a new and added a new linestock it stays the same.