Sewerage collectors in Rennes Métropole

This layer locates in a schematic or topographical way wastewater collectors, unit collectors and rainwater collectors. Among the available attributes: \- Status: status (public/private/undetermined) of the collector concerned; \- Operation: status of the collector (abandoned, planned, disconnected...); \- Material: collector material — this field insists on the value “Friendly cement” because it strongly impacts the work on the collectors and their maintenance; \- Sensitivity: this value refers to wastewater and unit water and refers to connected users upstream of the pipe and their sensitivity to network malfunction. Structures such as hospitals, EHPADs or schools will have a high value (3 or 4) while home pavilions at the head of the network will have a low value (1 or 2); \- Refoulement: pressure-operated pipes; \- Note ITV: the result of television inspections of the different types of collectors; \- preci_horizontal: allows to make a difference, the value “Low” indicates that it is schematic accuracy, the value “Topographic” indicates that it is topographical accuracy.