IfcRampFlight

Definition from IAI: Inclined slab segment, normally providing a human circulation link between two landings, floors or slabs at different elevations.

An IfcRampFlight is normally aggregated by a ramp (IfcRamp) through the IfcRelAggregates relationship, the ramp flight is then included in the set of IfcRelAggregates.RelatedObjects.

A ramp flight normally connects the floor slab of zero to two different storeys (or partial storeys) within a building. The connection relationship between the IfcRampFlight and the IfcSlab is expressed using the IfcRelConnectsElements relationship.

HISTORY New Entity in IFC Release 2.0.

Property Set Use Definition:

The property sets relating to the IfcRampFlight are defined by the IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. It is accessible by the inverse IsDefinedBy relationship. The following property set definitions specific to the IfcRampFlight are part of this IFC release:

Pset_RampFlightCommon: common property set for all ramp flight occurrences

Geometry Use Definitions:

The geometric representation of IfcRampFlight is given by the IfcProductDefinitionShape, allowing multiple geometric representations. Included are:

Local placement

The local placement for IfcRampFlight is defined in its supertype IfcProduct. It is defined by the IfcLocalPlacement, which defines the local coordinate system that is referenced by all geometric representations.

The PlacementRelTo relationship of IfcLocalPlacement shall point (if given) to the local placement of the same IfcSpatialStructureElement that is used in the ContainedInStructure inverse attribute or to a referenced spatial structure element at a higher level.
If the IfcRampFlight, however, is used by an IfcRamp, and this container class defines its own local placement, then the PlacementRelTo relationship of IfcLocalPlacement shall point to the local placement of the aggregate.

Standard Geometric Representation

The standard geometric representation of IfcRampFlight is defined using the swept area geometry. The following constraints apply to the standard representation:

Solid: IfcExtrudedAreaSolid is required,
Profile: IfcRectangleProfileDef shall be supported.
Extrusion: The profile shall be extruded in any direction relative to the XY plane of the position coordinate system of the IfcExtrudedAreaSolid. Therefore non-perpendicular sweep operation has to be supported. It might be further constrained to be in the direction of the global z-axis in implementers agreements.

Example of geometric representation of IfcRampFlight.

EXPRESS specification:

ENTITY IfcRampFlight

SUBTYPE OF (

IfcBuildingElement);

END_ENTITY;

Inheritance graph

ENTITY IfcRampFlight;

ENTITY IfcRoot;

GlobalId

IfcGloballyUniqueId;

OwnerHistory

IfcOwnerHistory;

Name

OPTIONAL IfcLabel;

Description

OPTIONAL IfcText;

ENTITY IfcObjectDefinition;

INVERSE

HasAssignments

SET OF IfcRelAssigns FOR RelatedObjects;

IsDecomposedBy

SET OF IfcRelDecomposes FOR RelatingObject;

Decomposes

SET [0:1] OF IfcRelDecomposes FOR RelatedObjects;

HasAssociations

SET OF IfcRelAssociates FOR RelatedObjects;

ENTITY IfcObject;

ObjectType

OPTIONAL IfcLabel;

INVERSE

IsDefinedBy

SET OF IfcRelDefines FOR RelatedObjects;

ENTITY IfcProduct;

ObjectPlacement

OPTIONAL IfcObjectPlacement;

Representation

OPTIONAL IfcProductRepresentation;

INVERSE

ReferencedBy

SET OF IfcRelAssignsToProduct FOR RelatingProduct;

ENTITY IfcElement;

Tag

OPTIONAL IfcIdentifier;

INVERSE

FillsVoids

SET [0:1] OF IfcRelFillsElement FOR RelatedBuildingElement;

ConnectedTo

SET OF IfcRelConnectsElements FOR RelatingElement;

HasCoverings

SET OF IfcRelCoversBldgElements FOR RelatingBuildingElement;

HasProjections

SET OF IfcRelProjectsElement FOR RelatingElement;

HasStructuralMember

SET OF IfcRelConnectsStructuralElement FOR RelatingElement;

ReferencedInStructures

SET OF IfcRelReferencedInSpatialStructure FOR RelatedElements;

HasPorts

SET OF IfcRelConnectsPortToElement FOR RelatedElement;

HasOpenings

SET OF IfcRelVoidsElement FOR RelatingBuildingElement;

IsConnectionRealization

SET OF IfcRelConnectsWithRealizingElements FOR RealizingElements;

ProvidesBoundaries

SET OF IfcRelSpaceBoundary FOR RelatedBuildingElement;

ConnectedFrom

SET OF IfcRelConnectsElements FOR RelatedElement;

ContainedInStructure

SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;

ENTITY IfcBuildingElement;

ENTITY IfcRampFlight;

END_ENTITY;