Dimension Pipework After Routing

[Louie99]

Hi,

I am trying to dimension various lengths and distances between my pipework after I have routed it. 

So far the only way to dimension I have come across is to type in the number as you are about to route some pipe. What if I want to change this number afterwards?

I have a lot of experience with Inventor but close to nothing in Autocad. 

Surely there must be a simple way to do this? I appreciate any help on the subject. 

Thank you. 

[h_eger]

Dear @Louie99,

did you have user training on Plant 3D?

[Louie99]

I have taught myself using the autodesk beginner tutorials. 

I know that you can dimension pipework as you place it and can change elevations accurately. I'm more so wondering about adding dimensions between pipework horizontally. 

[dgorsman]

Plant3D is an AutoCAD vertical and operates quite differently from Inventor.

You'll have to change some terminology as well - you are using the same term "dimension"/"add a dimension" in multiple contexts.  "Adding a dimension" would be adding an actual dimension object, which is typically done in a drawing, not a model.  Dimensions only reflect the value they measure, they do not drive part values like in Inventor.

Are you trying to *measure* the distance between pipes in a rack?  Trying to set them to a specific on-center or clearance distance?  Or...?

[Louie99]

Dimension is not the term I am looking for then. I just assumed there might be some sort of feature like the the dimension tool from inventor that is used whilst creating sketches, except in terms of positioning pipework, rather than sizes of a model. 

I am looking for a way of easily positioning my pipework accurately, such as typing in coordinates to set the center of the pipe this distance from the origin or some other reference point?

e.g. if I know two parallel pipes need to have 300 mm of horizontal clearance between centers. 

could I somehow somehow set one to be at (0, 0) and the other to be at (0, 300)?

Cheers.