structure in profile view

[eng-mht]

how can i set the smub of a structure at the crown of a pipe not at the invert?

[BrianHailey]

I don't understand. What's "the smub of a structure"?

[eng-mht]

I want to draw the structure from the pipe crown to surface
I want to know. Who to trim the pat of structure inside the pipe

[troma]

I can't answer your question, but perhaps I can help you ask it:

How can I set the sump of a structure at the crown of a pipe not at the invert?

I want to draw the structure from the pipe crown to surface.
I want to know how to trim the part of structure inside the pipe.