How to model a cross beam?

[jaroguy]

I have ductwork passing through a corridor and I'd like to box in the duct with metal stud and gyp bd. What is the best way to do this. I tried a ceiling for the bottom of the beam and walls for the sides but when you cut in section the wall and ceiling will not clean up with each other. I have attached my first attempt. You are looking up at the cross beam in the corridor

[luigi]

Ok...here is what I look for, when dealing with similar issues.

First of all, you will need to, no matter what, deal with the "join geometry" tool.

This will work for any view: elevation, 3d, section, ceiling, and plan, etc.

You need to be aware of a few things though. There are "priorities" set for each "component" of a wall, ceiling, roof, and floor. All in the same priority have equal "seniority" when geometry is joined. For example, if a priority of 2 is overlapping a priority of 1...then no matter in which order you "join geometry" the "2" will lose over "1", in other words, if the structure priority "1" of your ceiling is overlapping the substrate priority "2", when you join geometry, the edge of the ceiling will be visible. (which is the same effect you get in your attachment.)

What needs to be done is this. when making the sketch of your ceiling, don't do it to the outmost edge, actually stop the ceiling sketch to be the outmost edge of the structure priority "1". Then, when youjoin geometry, and it's best visible in section, the components with the same priority will clean up (core with core, finish with finish, etc.) you will then check the 3d and elevation, and it should be perfect....if there is still an edge, then the only thing causing it, is the edge of the material being different than the adjacent material. in3d, or elevation, if you use the "paint" tool, and override the material of the little edge (maybe gyp bd?) of the wall with the same material of the ceiling (also gyp bd?) then the line will disappear.

I used to allow for the edge of the ceiling to remain to the out most core, and then paint the edge, but this would only work in 3d and elevation...when a section would be cut, in a larger scale and in fine it would look incorrect...so the method above will make it work for all views.

I hope there isn't too much text to read, it is truly quite simple.

Let me know if you still need help...



I have ductwork passing through a corridor and I'd like to box in the duct with metal stud and gyp bd. What is the best way to do this. I tried a ceiling for the bottom of the beam and walls for the sides but when you cut in section the wall and ceiling will not clean up with each other. I have attached my first attempt. You are looking up at the cross beam in the corridor

[luigi]

BTW, based on your attachment, for sure the material of the wall and the ceiling are not the same. So either you have 2 types of "gyp bd." materials, or they are not the same... They should both either have a sand surface pattern, or both should not have any surface pattern...

[robert.manna]

There has been an on-going thread regarding this issue here. (http://forums.augi.com/showthread.php?t=46259&page=2) The subject has drifted a little bit from the original title.

-R