Pset_SpatialGeoObsExcavatedZone Common properties for excavated zone observations. IfcSpatialZone/MAPPEDZONE IfcSpatialZone/MAPPEDZONE TunnelExcavationMethod Type of the tunnel excavation method that was applied when the observation was made. ExcavationFaceType The excavation surface that was mapped. TUNNELFACE TUNNELWALL TUNNELROOF INVERT TUNNELFACE Observation done on the face of the excavation. TUNNELWALL Observation done on the sides of the excavation. TUNNELROOF Observation done on the roof of the excavation. INVERT Observation done on the floor of the excavation. ExcavationStep Excavation step. TOPHEADING TOPHEADING ExcavationMethod Excavation method used. DRILLBLAST DRILLBLAST LogNumber Identifer of the records.