Manual adjusting dimension values is fairly common in my experience. For example, standard details are often not drawn to scale. To do so would waste valuable time, provides no value, and would make somethings harder to understand.
Revit does modeling, yes, but it's not modeling all elements precisely. TBF, that'd be nigh impossible for a large building. And in MEP, at least, the deliverables generated are primarily 2D plans very similar to those drawn by hand and then in vanilla CAD, but with the added ability to include a lot of info. There was an intent - i presume - at one point to facilitate increased efficiency in this endevour. I've yet to see where that is possible. It does make for better, more efficient coordination at a roughly defined scale - say 1 to 10 cm. Not 0.1 to 1 mm, like Inventor.
Otherwise it wouldn't automatically connect copper fittings to plastic pipes without an error notifying users they need to transition.
Besides, MEP is in nature. you draw pipes side by side that will be almost touching, or even configured over-under.
Modeling mm accuracy is not revit. modeling to mimic real world is constraint-based modeling like Inventor.
Can you change dimension in inventor with ease? Yes.
We often work on renovations. It's impossible (aside from 3D scans) to replicate and entire building in a model. 3D scans require cost-prohibitive hardware that most firms simply cannot afford or justify.
That means the occasional dimensional bust, wehre the model doesn't match IRL hence the need for manual dim's.
@DZimmerKVJT2 - this post has been edited due to Community Rules & Etiquette violation.
