MB4 216a Broken Roofs (361:2)

A courtyard with 3 walls and a 4th side which had a wall but is now opened to רשות הרבים has the status of  צידי רשות הרבים (a כרמלית). What if the breach was at the corner?

If the walls of a house (including the roof) are breached in the corner carrying is prohibited. We don't say פי תקרה יורד וסותם for a corner or for a slanted wall.