On Land

Environment Information
At Rill Architects we run ArchiCAD on macOS. If you work at Rill, this is your stuff. If you don't, but you work in ArchiCAD, you may find something interesting. Anybody else, I don't know.
RSS

A Flue is for modeling chimney flues. It shows in plan and section. In section, the layer should be wireframe to show the flue void. In general use, elements on the A Flue layer will be subtracted from each part of the Fireplace/Chimney. The templates have a new layer combination, 'View Flues', which shows the flues solid inside the wireframe chimney.

A Chimney3 is for chimney parts that should not show in plan. Formerly we used A Wall Hi for this purpose. Putting these elements on their own layer allows you to show an axonometric of just the chimney. The templates have a new layer combination, 'View Chimney', which shows the chimney solid by itself. You can use a marquee to create a cutaway axon to show the flues.