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Showing posts from December, 2011

Revit MEP: Duct System Graphic Overrides

When you start drawing duct or pipe in Revit MEP with the Out Of The Box (OOTB) project template, you may see some color overrides automatically applied.  Where do these come from?  And more importantly, how can we customize them to our own standards?  Let’s start with the “Duct” tool.  Before we even place our first point, let’s look at the “Properties” palette and notice the parameter there, under the “Mechanical” heading, called “System Type”. 


This parameter allows us to designate the type of system our duct is without needing to connect to equipment or air devices (as was required in the past).  You will notice that for the OOTB project template, duct system overrides have been set up for each of the available system types (Supply, Return, Exhaust).  Please note, you can add additional system types as needed.  These defaults are meant only to demonstrate possibilities.
These overrides are stored as “Type Properties” of the “System Type”.  The only way to access these properties …

Revit MEP 2012 Pipe Rise/ Drop Annotation Size

You may have noticed your pipe rise/ drop annotations showing up larger than you would like.   The way that Revit controls these underwent a minor tweak with the 2012 release.  Let’s look first at the “Mechanical Settings” dialog box. 
Here we will find the “Pipe Rise/ Drop Annotation Size” setting.
The problem you may run into here is that the rounding doesn't seem to allow you to go less than 1/8”.This rounding, however, is controlled in an entirely different dialog box: “Project Units”.
You can access the "Project Units" dialog from the manage tab.
In the “Piping” discipline, under “Pipe Size”, the rounding you find here will control the “Pipe Rise/ Drop Annotation Size” which we found earlier under “Mechanical Settings”.  Set this rounding to a finer value (1/32" or 1/64") and then back in the mechanical settings dialog box try adjusting your “Pipe Rise/ Drop Annotation Size” to 3/32” and see how that looks.