Three types of roof structures were analyzed: cylindroid shape, conoid shape, and hyperbolic paraboloid shape.
Jolanta Dzwierzynska 2019, 'Integrated Parametric Shaping of Curvilinear Steel Bar Structures of Canopy Roofs',Buildingshttps://www.mdpi.com/2075-5309/9/3/72. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)