Divided Path & Divided Surface Node VisibilityWhen you are in the Conceptual Massing Environment (CME) in Revit (Mass family, In-Place mass, Adaptive Component, Pattern-based family), there are two commands for dividing elements: Divide Path & Divide Surface.
They behave slightly differently but have a common purpose and methodology as well as common problems.
Divided PathWhen a linear element (line, arc, spline etc) is selected, a command becomes available: "Divide Path" - this does not affect the original element but places a new element on top, which is divided into a specified number of segments delineated by nodes.
In the family environment, select the divided path. On the menu, it should display a panel called "Path Representation"; on the bottom right corner of the menu panel is a tiny black arrow.
This is where you can turn on or off the node visibility. Then you can save the family and load it into a project again.
Divided SurfaceThis works in a similar way and has the same visibility control problems, but of course it is inconsistent with the divided path in several ways:
1. By default the nodes on a divided path are visible; on a divided surface they are not, so you have to turn them on to see them!
2. The number on a divided path refers to the number of nodes; on a surface it refers to the number of segments - thus the same number would result in one extra node on a surface relative to a path
Hopefully this will save someone else from spending all day searching how to control node visibility.
Room Area Calculation HeightThis one catches me out every time I want to change it - I have to search the internet for clues on how to control what height room area calculations are made. This might not seem a big deal but when you have a split level building it certainly becomes vital, as room areas can be calculated for the wrong floor, or not at all. It can also be a problem if some of your walls start or stop at unusual heights.
How do you change this? After much head-scratching you might eventually figure out that the setting is not a project setting, nor a room setting but is in fact a property of the Level that the room is placed on. If you go to a section or elevation view and select the level, it will display the properties.
Pretty obscure huh? You can argue whether this is the right way to control the area calculation as it certainly gives flexibility to have different values for each level.
But there is no doubting that this has to be one of the most hidden away settings in Revit - who would think to look there? Who would remember this setting without being traumatised by spending hours or days trying to troubleshoot why a room is not properly enclosed?