A friend of mine had been working in Revit 2011 on a project. A few weeks ago he was asked to upgrade the project to the 2012 platform. After opening the file in 2012, the only elbows that Revit would draw were 90 degree elbows. Any angle in between greeted us with a big fat “do not enter” symbol.
At first, I thought somehow the lookup tables were not being seen? Nope.
Was the working plane slightly skewed from being parallel to the Z axis? Nope.
Pipe routing dropped the elbow family altogether? Nope.
As it turns out, Revit has a sense of humor. For whatever reason during the upgrade, Revit re-set one of its default settings: Pipe Connector Tolerance.
By definition that setting is 5 Degrees.
Pipe Connector Tolerance: specifies the number of degrees by which pipe connectors may deviate from their specified mating angle. The default setting is five degrees.
However here’s what the 2012 version looked like:
This convenient little guy allowed the pipes to be routed only at angles 75 degrees or greater.
Not sure how it gets reset, but setting this value back to 5 degrees will get you back on track with routing your piping.