Creating a triangular opening in an existisg loadbearing masonry wall

[JVH27]

I have read some forums on this site on creating openings in existing loadbearing masonry walls using needling and "pinch beam" methods with channels.

I am trying to understand if these methods would be applicable in creating a triangular opening for a louvres in a masonry wall near the top of the wall of a two story building. I am trying to maintain an existing cornice so the opening would need to shore a couple of feet of masonry above the trangular opening to allow removal of brick below.

I am leaning towards the pinch beam just not sure how this could work in a triangular configuration. Any thoughts or experineces out there, either way?

 

[SteveGregory]

Make an oversized rectangular hole below the channels. Then install a proper lintel for the opening you need. Finish by filling the opening as required with new or salvaged masonry.

 

[Ron]

Based on your sketch, the opening goes to the cornice...why do you need to support any of the facade? If all you are supporting is a couple of feet of brick veneer, then a ledge angle attached to the structure would be sufficient.