I thought the picture was self-explaining.
As a translation:
- blue is the wind
- "toît en tôle" is the metal roof. They chose a round roof to minimize wind forces
- the actual invention is the dark grey part, made of reinforced concrete. It protects the side of the roof from the wind while letting the water gets through. In that design, that part is reinforced (it must be as it will still receive the wind efforts).
I did get that idea, but still a few of the words were new to me and hence my request!
In my design, I made a 10” high laminate of 18 glued layers of 1/8” marine plywood and faced it with stainless steel. It also similarly covers a gutter with a second gutter underneath for leaks built inside. The laminate is connected to 10” high vertical beams over the roof and to a 2x4 bolted to to a steel beam at the edges.
The profile is again sloped as in the diagram you shared, (but not curved), and the edge of our asphalt roof tiles is similarly protected To some extent by the 10” high steel-faced laminated peripheral beam.
Overall, rather similar in concept!
But I designed it only for myself and did no engineering calculations, at that time, 25 years ago!
It looks brand new today!