| Item | SPF | XML | Change | Description | IFC4x2 to IFC4x3_RC1 |
|---|---|---|---|---|
| IfcBuiltSystemTypeEnum | ADDED | IFC4x3_RC3 to IFC4x3_RC4 | ||
| IfcBuiltSystemTypeEnum | MOVED | Schema changed from IFCSHAREDINFRASTRUCTUREELEMENTS to IFCPRODUCTEXTENSION. | ||
| MOORINGSYSTEM | X | X | DELETED | IFC4X3_ADD2 to IFC4X4_draft |
| IfcBuiltSystemTypeEnum | ||||
| TUNNEL_PRESUPPORT | ADDED | |||
| TUNNEL_SUPPORT | ADDED | |||
| TUNNEL_LINING | ADDED | |||
| WATERPROOFING | ADDED | |||
| FIREPROTECTION | ADDED |
This enumeration identifies different types of built systems.
| Constant | Description |
|---|---|
| REINFORCING | System of elements providing reinforcing to the structure. |
| MOORING | System of components and elements responsible for keeping or holding an element (a vessel, platform or set of catenary lines) in a desired position. |
| OUTERSHELL | System of built elements that provide the outer skin to protect the construction (such as the facade). |
| TRACKCIRCUIT | A track circuit is an electric circuit of which the rails of a track section form a part, with usually a source of current connected at one end and a detection device at the other end for detecting whether this track section is clear or occupied by a vehicle. In a continuous signalling system, the track circuit can be used to transmit information between the ground and the train. Note: definition from IEC 60050-82. |
| EROSIONPREVENTION | A grouping of elements into a built system for preventing unwanted relocation of material particles in earthworks slopes or rock faces. Typical types of erosion prevention include:
|
| FOUNDATION | System of shallow and deep foundation elements that transmit forces to the supporting ground. |
| LOADBEARING | System of built elements that transmit forces and stiffen the construction. |
| SHADING | System of shading elements (external or internal) that permits the limitation or control of impact of natural sun light. |
| FENESTRATION | System of doors, windows, and other fillings in openings in a built envelope that are designed to permit the passage of air or light. |
| TRANSPORT | System of all transport elements in a facility that enable the transport of people or goods. |
| PRESTRESSING | System of elements providing pre-stressing to the structure, including typically manufactured products such as tendons, anchorages (active, dead, coupling), ducts, vents and deviators, and in-situ concrete segments, tendon spacers, blisters and additional reinforcements. |
| RAILWAYLINE | A set of functional tracks with explicit terminals. It is usually composed of a set of tracks with continuous track parts and alignments. |
| RAILWAYTRACK | Railway track system. It is usually composed of continuous sequences of track parts and alignments. |
| TUNNEL_PRESUPPORT | A grouping of rigid elements installed before excavation at the tunnel face at the top perimeter of the tunnel section. |
| TUNNEL_SUPPORT | Grouping of elements designed and installed to guarantee the long term stability of the underground structure. |
| TUNNEL_LINING | A functional grouping of tunnel lining elements. |
| WATERPROOFING | Grouping of elements used to protect the facility against damage from moisture or the unintentional entry of water as well as the danger posed by aggressive water or soils and the effects of chemicals. |
| FIREPROTECTION | Passive fire protection for containing fire and preventing it from spreading further. |
| USERDEFINED | User-defined type |
| NOTDEFINED | Undefined type. |
<xs:simpleType name="IfcBuiltSystemTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="reinforcing"/>
<xs:enumeration value="mooring"/>
<xs:enumeration value="outershell"/>
<xs:enumeration value="trackcircuit"/>
<xs:enumeration value="erosionprevention"/>
<xs:enumeration value="foundation"/>
<xs:enumeration value="loadbearing"/>
<xs:enumeration value="shading"/>
<xs:enumeration value="fenestration"/>
<xs:enumeration value="transport"/>
<xs:enumeration value="prestressing"/>
<xs:enumeration value="railwayline"/>
<xs:enumeration value="railwaytrack"/>
<xs:enumeration value="tunnel_presupport"/>
<xs:enumeration value="tunnel_support"/>
<xs:enumeration value="tunnel_lining"/>
<xs:enumeration value="waterproofing"/>
<xs:enumeration value="fireprotection"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>
TYPE IfcBuiltSystemTypeEnum = ENUMERATION OF (
REINFORCING,
MOORING,
OUTERSHELL,
TRACKCIRCUIT,
EROSIONPREVENTION,
FOUNDATION,
LOADBEARING,
SHADING,
FENESTRATION,
TRANSPORT,
PRESTRESSING,
RAILWAYLINE,
RAILWAYTRACK,
TUNNEL_PRESUPPORT,
TUNNEL_SUPPORT,
TUNNEL_LINING,
WATERPROOFING,
FIREPROTECTION,
USERDEFINED,
NOTDEFINED);
END_TYPE;
References: IfcBuiltSystem
EXPRESS-G diagram
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