We introduce a representation framework that is aimed at supporting performance analysis during schematic and detailed design. The framework is based on two distinct representations as well as automated, bidirectional mappings to maintain consistency. Schematic building configurations are defined in a sheet representation, and may be expanded into a solid representation, where outlines of building and space enclosures may be further decomposed into construction layers or components. Model manipulation in both representations as well as mappings is supported by spatial partitioning and offsetting techniques. A case study illustrates how the framework could be used in performance-based design practice.
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