Alright. For Arch241 I have no talent apparently. I took 45 out of 100.Actually, it was normal for me. I have no talent for forces or so on. It was the same with my high school physics lessons. Because all class somehow below the average our instructor gave us a chance. We can design a poster about a structural system and we will take bonus grade.
I searched about flying buttresses. Those system was generally used in gothic architecture. Thanks to this structural system in that time, they were able to build high churches and they were able to come up with glasses. Flying buttresses are carrying forces to the ground.