#1 is what I'm starting with.
#2 is what I get when I join beam and floor, no matter the pick order.
#3 is what I need. Is there a way to get it by joining? Or some other way other than painstakingly trace floors around every beam in the entire building? I have no issue if there is some way of modifying the beam family so that it just conceals the floors in sections, but keeps its hatch.
Unfortunately no, tried that. That literally joins them. See #2.
Also tried adding a masking region in the beam family, just to test if some trickery with hatching would do the concealing trick. Weirdly that only works on the beam that has the floor cut out around it #3, the one that is in the floor is unaffected #1. They're the same family.
It's important that the beam is seen as a separate object (because it is).
As I said, they rest on walls and beams that go in the opposite direction. Also, this was just an example, I have a more complicated profile, which is not a metal decking at all. It's a semi-prefabricated ceiling with hollow blocks.
Here's an illustration, see the rebar above the far right wall? Also above the back wall. It forms a beam with the concrete that is poured on the whole ceiling. And those beams are usually formed above most walls, so when you look at the section in this direction, it just looks like nothing is supporting the ceiling.
Yes; I understand that construction. Essentially, concrete poured over hollow-core plank system.
Floor w/custom Deck Profile atop Beam System will get you a fair representation, although the Deck Profile could be omitted from the Floor Type and instead, Join the Beams to the Floor. Joining will remove volume of Floor at union. Either way, I imagine the reason you are modeling it this way is to obtain a more accurate takeoff for estimating concrete.
