Options, alternatives and preferences                                                                                                                            

For aesthetic purposes, I favour "Y"  shape for the steel frame. It will be possibly more difficult to construct than "T" shape ( more welding), but it's symmetry makes a good base for the ceramic triangle.

Ah, the triangle.......fun is in the coming up with many options....

and than choosing the right one....

This is approximately what it would look like:

Maybe I should make it slightly larger than the last one.....