Implementation of City Information Modeling (CIM) concepts in the process of management of the sewage system in Piumhi, Brazil

Abstract

The municipality of Piumhi, Brazil, lives with sewage system problems. Currently the model used by the SAAE (local Water and Sewage Public Provider) only provides corrective actions. The combination of the concepts BIM and GIS will allow the movement towards the City Information Modeling, seen in a promising way for public management. The purpose of this research is to develop a management model for the sewage network that focus on preventive actions, allowing a decision-making process based on accurate information. Meetings were held with the municipal autarchy, enabling a diagnosis of the current situation and the determination of strategies for dices collect. 1731 wells were surveyed, with the following data collected: depths, geographic coordinates, diameter, pipe’s material and flow direction in each section. The wells in the sewage network were 1291 visible, 316 unseen and 64 non-precision coordinates. The wells in the sewage interceptors were 56 visible and 4 unseen wells. Due to the high percentage of unseen wells (18,5%) many alignments of the sewage network were no determined, what is recommended to be done as maintenance occurs in the existing infrastructure. A web management tool for QGis and tutorials will be, allowing SAAE to carry out the preventive management of the sewage network. The development of a reliable database will allow the identification of problems and the comparison of the conditions and characteristics of the existing networks, allowing the SAAE to define assertive actions to improve infrastructure performance and generate savings in financial resources, equipment and manpower.