Why can't the beam be blocked by the door in section?

[LeeJaeYoung]

this is section

Why can't the beam be blocked by the door?
I copied the one on the right, but I can't see it

this is plan

this is  beam

this is section

[Andrii Levko]

Building materials priority.  You have to give your beam the same or higher priority for building material than the wall.

[LeeJaeYoung]

this is section

Then, how can I model the cross section like this?

[Andrii Levko]

You have to give your beam the same or higher priority for building material than the wall.

In main menu choose Options/Element Attributes/Building materials,  you can find there "Intersection priority" and give for building material of beam  higher priority then building material of the wall.

[Andrii Levko · Accepted solution]

[LeeJaeYoung]

Thank you so much ^^

Insulation does not need to be combined
The plasterboard and other materials above must be combined.

[Andrii Levko]

I just give you the answer, you can just check if it works or not.

And to combine or not, you have to decide for yourself.

But you can always duplicate building material using it for special cases such as you have with this beam.

[Andrii Levko]

Because the beam is invisible by intersection priority.

[Andrii Levko]

As an option, you can assign a beam to another layer and give this layer a higher priority, for example 2. Because the priority of layers is probably higher than intesection priority

[LeeJaeYoung]

thank you so much

The plasterboard and other materials above must be combined.

If it were you, how would you make it?
I am a beginner.