 | Treppenlauf |
 | Stair Flight |
 | Volée d'escalier |
| Item | SPF | XML | Change | Description | 4.0.0.0 |
|---|---|---|---|---|
| IfcStairFlight | ||||
| OwnerHistory | MODIFIED | Instantiation changed to OPTIONAL. | ||
| PredefinedType | ADDED | 4.0.1.0 | ||
| IfcStairFlight | ||||
| NumberOfRisers | MODIFIED | Name changed from NumberOfRiser to NumberOfRisers. Type changed from INTEGER to IfcInteger. | ||
| NumberOfTreads | MODIFIED | Type changed from INTEGER to IfcInteger. | 4.0.2.1 | |
| IfcStairFlight | ||||
| NumberOfRisers | MODIFIED | Status changed to Deprecated. | ||
| NumberOfTreads | MODIFIED | Status changed to Deprecated. | ||
| RiserHeight | MODIFIED | Status changed to Deprecated. | ||
| TreadLength | MODIFIED | Status changed to Deprecated. |
A stair flight is an assembly of building components in a single "run" of stair steps (not interrupted by a landing). The stair steps and any stringers are included in the stair flight. A winder is also regarded a part of a stair flight.
An IfcStairFlight is normally aggregated by an IfcStair through the IfcRelAggregates relationship, the stair flight is then included in the set of IfcRelAggregates.RelatedObjects. An IfcStairFlight normally connects the floor slab of zero to two different storeys (or partial storeys, or landings) within a building. The connection relationship between the IfcStairFlight and the IfcSlab can be expressed using the IfcRelConnectsElements relationship.
HISTORY New entity in IFC2.0.
| # | Attribute | Type | Cardinality | Description | R |
|---|---|---|---|---|---|
| 9 | NumberOfRisers | - | This attribute is out of scope for this model view definition and shall not be set. | ||
| 10 | NumberOfTreads | - | This attribute is out of scope for this model view definition and shall not be set. | ||
| 11 | RiserHeight | - | This attribute is out of scope for this model view definition and shall not be set. | ||
| 12 | TreadLength | - | This attribute is out of scope for this model view definition and shall not be set. | ||
| 13 | PredefinedType | IfcStairFlightTypeEnum | ? |
Predefined generic type for a stair flight that is specified in an enumeration. There may be a property set given specificly for the predefined types.
NOTE The PredefinedType shall only be used, if no IfcStairFlightType is assigned, providing its own IfcStairFlightType.PredefinedType. IFC4 CHANGE The attribute has been added at the end of the entity definition. | X |
| Rule | Description |
|---|---|
| CorrectPredefinedType | Either the PredefinedType attribute is unset (e.g. because an IfcStairFlightType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED. |
| CorrectTypeAssigned | Either there is no stair flight type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcStairFlightType. |
| # | Attribute | Type | Cardinality | Description | R |
|---|---|---|---|---|---|
| IfcRoot | |||||
| 1 | GlobalId | IfcGloballyUniqueId | Assignment of a globally unique identifier within the entire software world. | X | |
| 2 | OwnerHistory | IfcOwnerHistory | ? |
Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
NOTE only the last modification in stored - either as addition, deletion or modification. IFC4 CHANGE The attribute has been changed to be OPTIONAL. | X |
| 3 | Name | IfcLabel | ? | Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule. | X |
| 4 | Description | IfcText | ? | Optional description, provided for exchanging informative comments. | X |
| IfcObjectDefinition | |||||
| HasAssignments | IfcRelAssigns @RelatedObjects | S[0:?] | Reference to the relationship objects, that assign (by an association relationship) other subtypes of IfcObject to this object instance. Examples are the association to products, processes, controls, resources or groups. | X | |
| Nests | IfcRelNests @RelatedObjects | S[0:1] | References to the decomposition relationship being a nesting. It determines that this object definition is a part within an ordered whole/part decomposition relationship. An object occurrence or type can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE The inverse attribute datatype has been added and separated from Decomposes defined at IfcObjectDefinition. | ||
| IsNestedBy | IfcRelNests @RelatingObject | S[0:?] | References to the decomposition relationship being a nesting. It determines that this object definition is the whole within an ordered whole/part decomposition relationship. An object or object type can be nested by several other objects (occurrences or types).
IFC4 CHANGE The inverse attribute datatype has been added and separated from IsDecomposedBy defined at IfcObjectDefinition. | X | |
| HasContext | IfcRelDeclares @RelatedDefinitions | S[0:1] | References to the context providing context information such as project unit or representation context. It should only be asserted for the uppermost non-spatial object.
IFC4 CHANGE The inverse attribute datatype has been added. | ||
| IsDecomposedBy | IfcRelAggregates @RelatingObject | S[0:?] | References to the decomposition relationship being an aggregation. It determines that this object definition is whole within an unordered whole/part decomposition relationship. An object definitions can be aggregated by several other objects (occurrences or parts).
IFC4 CHANGE The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates. | X | |
| Decomposes | IfcRelAggregates @RelatedObjects | S[0:1] | References to the decomposition relationship being an aggregation. It determines that this object definition is a part within an unordered whole/part decomposition relationship. An object definitions can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates. | X | |
| HasAssociations | IfcRelAssociates @RelatedObjects | S[0:?] | Reference to the relationship objects, that associates external references or other resource definitions to the object.. Examples are the association to library, documentation or classification. | X | |
| IfcObject | |||||
| 5 | ObjectType | IfcLabel | ? |
The type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes. In particular it holds the user defined type, if the enumeration of the attribute PredefinedType is set to USERDEFINED.
| X |
| IsTypedBy | IfcRelDefinesByType @RelatedObjects | S[0:1] | Set of relationships to the object type that provides the type definitions for this object occurrence. The then associated IfcTypeObject, or its subtypes, contains the specific information (or type, or style), that is common to all instances of IfcObject, or its subtypes, referring to the same type.
IFC4 CHANGE New inverse relationship, the link to IfcRelDefinesByType had previously be included in the inverse relationship IfcRelDefines. Change made with upward compatibility for file based exchange. | X | |
| IsDefinedBy | IfcRelDefinesByProperties @RelatedObjects | S[0:?] | Set of relationships to property set definitions attached to this object. Those statically or dynamically defined properties contain alphanumeric information content that further defines the object.
IFC4 CHANGE The data type has been changed from IfcRelDefines to IfcRelDefinesByProperties with upward compatibility for file based exchange. | X | |
| IfcProduct | |||||
| 6 | ObjectPlacement | IfcObjectPlacement | ? | Placement of the product in space, the placement can either be absolute (relative to the world coordinate system), relative (relative to the object placement of another product), or constraint (e.g. relative to grid axes). It is determined by the various subtypes of IfcObjectPlacement, which includes the axis placement information to determine the transformation for the object coordinate system. | X |
| 7 | Representation | IfcProductRepresentation | ? | Reference to the representations of the product, being either a representation (IfcProductRepresentation) or as a special case a shape representations (IfcProductDefinitionShape). The product definition shape provides for multiple geometric representations of the shape property of the object within the same object coordinate system, defined by the object placement. | X |
| IfcElement | |||||
| 8 | Tag | IfcIdentifier | ? | The tag (or label) identifier at the particular instance of a product, e.g. the serial number, or the position number. It is the identifier at the occurrence level. | X |
| FillsVoids | IfcRelFillsElement @RelatedBuildingElement | S[0:1] | Reference to the IfcRelFillsElement Relationship that puts the element as a filling into the opening created within another element. | ||
| HasOpenings | IfcRelVoidsElement @RelatingBuildingElement | S[0:?] | Reference to the IfcRelVoidsElement relationship that creates an opening in an element. An element can incorporate zero-to-many openings. For each opening, that voids the element, a new relationship IfcRelVoidsElement is generated. | X | |
| ContainedInStructure | IfcRelContainedInSpatialStructure @RelatedElements | S[0:1] | Containment relationship to the spatial structure element, to which the element is primarily associated. This containment relationship has to be hierachical, i.e. an element may only be assigned directly to zero or one spatial structure. | X | |
| IfcBuildingElement | |||||
| IfcStairFlight | |||||
| 9 | NumberOfRisers | - | This attribute is out of scope for this model view definition and shall not be set. | ||
| 10 | NumberOfTreads | - | This attribute is out of scope for this model view definition and shall not be set. | ||
| 11 | RiserHeight | - | This attribute is out of scope for this model view definition and shall not be set. | ||
| 12 | TreadLength | - | This attribute is out of scope for this model view definition and shall not be set. | ||
| 13 | PredefinedType | IfcStairFlightTypeEnum | ? |
Predefined generic type for a stair flight that is specified in an enumeration. There may be a property set given specificly for the predefined types.
NOTE The PredefinedType shall only be used, if no IfcStairFlightType is assigned, providing its own IfcStairFlightType.PredefinedType. IFC4 CHANGE The attribute has been added at the end of the entity definition. | X |
Object Typing
The Object Typing concept template applies to this entity as shown in Table 99.
| ||||
Table 99 — IfcStairFlight Object Typing |
Property Sets for Objects
The Property Sets for Objects concept template applies to this entity as shown in Table 100.
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Table 100 — IfcStairFlight Property Sets for Objects |
Quantity Sets
The Quantity Sets concept template applies to this entity as shown in Table 101.
| ||||||||||||||||||||||
Table 101 — IfcStairFlight Quantity Sets |
Element Composition
The Element Composition concept applies to this entity.
The IfcStairFlight shall only be used within the component breakdown structure of an IfcStair.
Spatial Containment
The Spatial Containment concept applies to this entity, and overrides usage indicated at supertypes.
Since the IfcRampFlight is always a component of IfcRamp it shall not have an independent spatial containment relationship to a spatial structure.
Instance diagram
<?xml version="1.0"?>
<ConceptRoot xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="9ebbf2e8-1753-4513-8507-2e86d27ca831" name="IfcStairFlight" status="sample" applicableRootEntity="IfcStairFlight">
<Applicability uuid="00000000-0000-0000-0000-000000000000" status="sample">
<Template ref="9721cc74-54da-4fbb-aaa4-5e3fc5158245" />
<TemplateRules operator="and" />
</Applicability>
<Concepts>
<Concept uuid="4bc2545a-c9d7-47af-94f6-e963e17323eb" name="Object Typing" status="sample" override="false">
<Template ref="35a2e10e-20df-40f4-ab2f-dacf0a6744f4" />
<Requirements>
<Requirement applicability="export" requirement="recommended" exchangeRequirement="dcd96125-898e-4ff0-b294-eb02afe953aa" />
<Requirement applicability="import" requirement="recommended" exchangeRequirement="dcd96125-898e-4ff0-b294-eb02afe953aa" />
</Requirements>
<TemplateRules operator="and">
<TemplateRule Parameters="RelatingType=IfcStairFlightType;" />
</TemplateRules>
</Concept>
<Concept uuid="f898c165-64e4-4a13-93eb-721d42f9623b" name="Property Sets for Objects" status="sample" override="false">
<Template ref="f74255a6-0c0e-4f31-84ad-24981db62461" />
<TemplateRules operator="and">
<TemplateRule Parameters="PsetName=Pset_StairFlightCommon;" />
</TemplateRules>
</Concept>
<Concept uuid="509e18e0-870c-4e01-83db-8b8b9d073a1d" name="Quantity Sets" status="sample" override="false">
<Template ref="6652398e-6579-4460-8cb4-26295acfacc7" />
<Requirements>
<Requirement applicability="export" requirement="recommended" exchangeRequirement="dcd96125-898e-4ff0-b294-eb02afe953aa" />
<Requirement applicability="import" requirement="recommended" exchangeRequirement="dcd96125-898e-4ff0-b294-eb02afe953aa" />
</Requirements>
<TemplateRules operator="and">
<TemplateRule Parameters="QsetName=Qto_StairFlightBaseQuantities;" />
</TemplateRules>
</Concept>
<Concept uuid="0d4fed1c-0724-4cf2-b49e-52ccc1e1d944" name="Element Composition" status="sample" override="false">
<Template ref="ca0f65e2-3913-4fdb-8a09-0c5c7a0d5421" />
</Concept>
<Concept uuid="f17e7b31-4e53-48ee-8b33-468cf61b9dc6" name="Spatial Containment" status="sample" override="true">
<Template ref="d9a3f822-0014-4bc2-8d94-9d9067759045" />
</Concept>
</Concepts>
</ConceptRoot>
<xs:element name="IfcStairFlight" type="ifc:IfcStairFlight" substitutionGroup="ifc:IfcBuildingElement" nillable="true"/>
<xs:complexType name="IfcStairFlight">
<xs:complexContent>
<xs:extension base="ifc:IfcBuildingElement">
<xs:attribute name="PredefinedType" type="ifc:IfcStairFlightTypeEnum" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
ENTITY IfcStairFlight
SUBTYPE OF (IfcBuildingElement);
NumberOfRisers : OPTIONAL IfcStrippedOptional;
NumberOfTreads : OPTIONAL IfcStrippedOptional;
RiserHeight : OPTIONAL IfcStrippedOptional;
TreadLength : OPTIONAL IfcStrippedOptional;
PredefinedType : OPTIONAL IfcStairFlightTypeEnum;
WHERE
CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR
(PredefinedType <> IfcStairFlightTypeEnum.USERDEFINED) OR
((PredefinedType = IfcStairFlightTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR
('IFCSHAREDBLDGELEMENTS.IfcStairFlightType' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;
Link to this page