Tuesday, March 15, 2011

More Dimensions to Revit

A question posed to the LARUG's LinkedIn group: Does revit have symbols for center line or angle like the other software has?

F' Yeah!!!
OK: select a dimension > hit Edit Type and look at the properties!!!

You should be able to figure it out from there... If not; look at the image below for the 3 "Centerline" fields and go at it (in Revit)!!!

More on Dimensional goodness, from an old post on Dimensions: Here!!! also...

A final tip: Unless you have memorized all parameters for all possible objects, ALWAYS CHECK THE PARAMETERS!!!

If you have a question and then look at all the parameters, both the Instance and Type, you just may find what you are looking for... or better yet, find something you weren't looking for yet that will help you immeasurably later on!!!


  1. Also correct me if I am wrong but the CL symbol only shows up if you snap to center left and right, or center front and back reference planes from the family. Another the problem is that these are type parameters so if you turn the symbol on it always shows. If you want different configurations you have to create multiple different types, and swap them out when you want to see what.

  2. DN,
    Yes, by design the CL symbol shows up when hitting centers of objects but that's what it's for as I've always known...why would that be a problem?

    I typically use several different dimension types anyhow, since I suggest the project units for length be set to 12 decimal place percision for angles and 1/256" for lengths then if there is just one or two odd #'s due to oblique angles, etc. I use a dimension type that overrides the project units to round to the 1/8". I do not use rounded dimensions typically since in real world projects in Revit if the dimension is some funky fraction I suggest moving the object to the correct location, rather than lying by using a rounded (technically false) dimension.

    The need for different 'types' of dimensions is not a problem in my opinion, it gives adequate functionality and although it may be nice to have these as instance (or a choice of either instance or type) I am not too stressed over this.

    Also all one need do is to create more symbols (beyond just the CL one) to have different symbolic values show up -though only when the center is dimensioned to.

  3. It's a problem when you have a item an item that isn't built around the center line. Take the w-flange detail component for instance. Or when dimensioning to a reference plane or grid line that also is the center of an item. In those instance you have to place the annotation symbol separately.

    My reason for posting was that while the function exists it could be improved.

  4. FYI: W Flange detail components DO dimension with the correct CL symbology.

    It is simple enough to add a ref plane to a detail component and make it a center reference then dimensioning will work as desired.

    Grids and REF Planes are not centroid objects so they technically don't need the CL symbol and while it may be useful to have that functionality, from a drafting point of view I have found it's not where the bread is buttered (less than profitable to add symbols).

    If one dimensions (as you know) to an object that shares a grid or REF plane as a center the CL will show up, so for now(?) that's the best workflow.

  5. Very helpful. One unfortunate shortcoming is that linked element centerlinesdo not activate the CL symbol. Apparently I will need to copy/monitor just for that functionality or manually place/maintain annotation.