Pset_PreSupportCommon Properties describing the characteristcs of excavation pre-support measures. IfcBuiltSystem/.TUNNEL_PRESUPPORT. IfcTunnelTypicalSection/.EXCAVATIONSUPPORT. IfcElementAssembly/.PRESUPPORTVAULT. IfcElementAssembly/.PRESUPPORTFACE. IfcBuiltSystem/.TUNNEL_PRESUPPORT.,IfcTunnelTypicalSection/.EXCAVATIONSUPPORT.,IfcElementAssembly/.PRESUPPORTVAULT.,IfcElementAssembly/.PRESUPPORTFACE. PreSupportLocation Specifies whether the pre-support is in face or around circumference. TUNNELVAULT TUNNELFACE USERDEFINED NOTDEFINED TUNNELVAULT The pre-support is around the circumference of the tunnel. TUNNELFACE The pre-support is in the tunnel face. USERDEFINED User Defined NOTDEFINED Notdefined UserDefinedPreSupportLocation Specifies a user defined pre-support location. Used when PreSupportLocation is set to USERDEFINED. PreSupportType Specifies the type of pre-support applied. JETGROUTED PIPEUMBRELLA FREEZING FOREPOLING SPILING USERDEFINED NOTDEFINED JETGROUTED Pre-support using jet grouting. PIPEUMBRELLA Pre-support using pipe umbrellas. FREEZING Pre-support using freezing. FOREPOLING Pre-support using forepoling. SPILING Pre-support using spiling. USERDEFINED User Defined NOTDEFINED Notdefined UserDefinedPreSupportType Specifies a user defined type of pre-support applied. Used when PreSupporttype is set to USERDEFINED. Arrangement Specifies whether the pre-support is simple or staggered. SIMPLE STAGGERED SIMPLE A simple arrangement of pre-support. STAGGERED A staggered arrangement of the pre-support. BoreholeLengthPlanned The planned length of a borehole e.g. in a site investigation program, in metres, as determined by the data provider. BoreholeOverlap Overlap of staggered boreholes. UsefulLength Length that can be used, generally length less overlap. DrillingDiameter Property to be removed when Pset_BoreholeConstruction is merged and DrillingDiameter from there is reused. IsBoreholeCased Specifies whether the boreholes are cased or not. DrillingMethod Type of drilling method used. AreHolesGrouted Specifies whether holes are grouted after insertion of pipes/bars.