Using Parametric Simulations to Generate a Shading Typology for Hexagon Modules with Perimeter and Interior Fin Configurations

There are multiple benefits to shading roofs from generating an ambient external atmosphere that may lower direct and diffuse heat gain flux on the roof external surface and interior spaces, to affecting the abiotic conditions on green roofs that enhance the sustainability of green roof vegetation. To date limited research has examined the design of profile geometry in roofing modules and arrangement patterns, that may generate shading on the exposed roof surface. This research has application for the design of future green roof and precast concrete sandwich panel roofing systems. The aim of this paper is to examine how shadows can be increased by a combination of perimeter and interior fins fitted to hexagon module 1 meter in width with a cavity depth of 0.4 m. The parametric modelling tools Rhinoceros CAD, and Grasshopper with Ladybug plugin are used as the digital simulate shadows, solar hours and measure shading intensity. Vertical fins (single, double, triple, quadruple and quintuple) fitted on hexagon modules cover a full roof surface of 9 x 9 m (81 m2) with shadows measured annually and for 3 months (quarters).