Topologic is a geometric kernel developed by Wassim Jabi, Robert Aish, et Simon Lannon in a partnership between the Cardiff and the Bartlett schools of architecture. Unlike the volumetric analysis of structural elements, which must be carried out on manifolds, the analysis of architectural spaces has to deal with non-manifolds. Topologic is developed on the basis of the OpenCascade kernel and allows the elaboration of tological representations of spaces for thermal analysis in particular.