Pset_GeoObsBoreholeConstruction Properties for describing the construction of a borehole. IfcBorehole IfcBorehole DrillingDiameter Drilled Borehole diameter. LiningMaterial The material of the lining for borehole wall stabilizing. BoreholeFilter Identification of filter segment installed in the casing of a borehole. BoreholeInstallation Equipment installed in the borehole.