A referential scheme for modeling and identifying spatial attributes of entities in constructed facilities |
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Authors: | M Kiumarse Zamanian Steven J Fenves |
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Affiliation: | (1) Production Computing Division, Exxon Production Research Company, Houston, Texas, USA;(2) Department of Civil Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA |
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Abstract: | This paper presents a referential scheme for representing and identifying the spatial extent of physical entities of constructed facilities, such as buildings and offshore structures. Using the basic operations of a non-manifold geometric modeler, a set of high-level algebraic operations is defined. The scheme and its algebra are used for modeling the spatial attributes of a facility entity at two levels: primary and secondary. The primary representation uniquely captures an entity's spatial attributes at the skeletal level and is used mainly for identifying discipline-independent topological relationships of that entity with others. Secondary representations, on the other hand, are used to provide an entity's discipline-specific geometric attributes. The topological relationships and geometric attributes of facility entities thus need not be explicitly stored, but can be computed on demand by the underlying non-manifold modeler. |
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Keywords: | Geometric modeling AEC CAD/CAE Facility |
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