Virtual 3d Multilayer Cadastre With Particular Emphasis On Condominium By Integrating Geospatial Tools:

Abstract

3D property registration has become a vital need in order to optimally reflect all complex cases of the multilayer reality of property rights and restrictions, revealing their vertical component.This paper refers to the potentials and multiple applications of 3D cadastral systems and ability to address ownership rights where limited to the third dimension by identifying the 3D object with necessary information of specific houses from Interlocked and overlapped condominium building located at Mekelle city. The Arc GIS software has been used for Preparing and processing the pre-Model activities of 3D cadastral data. In order to register and visualize the complex reality in 3D, Esri’s City Engine a code based modeling software has been used, which specializes in Computer Generated Architecture (CGA) of 3D urban environments , transforming 2D GIS Data(building footprint) into smart 3D city models have same geographic coordinates but differnetiated with respect to surface of the earth. The application and potential of 3D model has been tested by selecting three condominium design types in Mekelle city in which a complex ownership status is established along with approved legal document from Mekelle housing development agency. The 3D model was built using the parameters of spatial object,orientation, attribute,textures and elevation based on input data, derived from Aerial Photographs,cadastral and questionnaire datasets, as well as legal documents and architectural plans. The process resulted in a final 3D model and capable of easy to store,update,search,insert,share,maintain and visualize a single intended 3D properity unit by hiding other 3D elements (property units) with in the building.