The roof is gable, with a planned gable overhang of 600 mm. I do not want to do it with a crate (25x125), since the planned cement-sand tiles. Seen that some form it with intermediate boards connecting the outermost rafters. It turns out to be something like a staircase, but I have not found how to make these connections, on the corners or nailing? Maybe someone will give the links to this construction node.
Like this – with the support on the wall. BRAAS roof tiles. Fastening to 2 corners on each side (only one is shown), because of the thick rafter.