Fundament / Tiefgründung

A pile is a slender timber, concrete, or steel structural element, driven, jetted, or otherwise embedded on end in the ground for the purpose of supporting a load. A pile is also characterized as deep foundation, where the loads are transfered to deeper subsurface layers.

NOTE  Definition according to ISO 6707-1: slender structural member, substantially underground, intended to transmit force(s) into loadbearing strata below the surface of the ground.
NOTE  Shallow foundations, which transfer the loads to the ground near its surface, are represented by IfcFooting.
HISTORY  New entity in IFC2x2.

Common Use Definitions

The following concepts are inherited at supertypes:

 Instance diagram

Object Typing

The Object Typing concept applies to this entity as shown in Table 649.

Table 649 — IfcPile Object Typing

Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 650.

Table 650 — IfcPile Property Sets for Objects

Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 651.

Table 651 — IfcPile Quantity Sets

Material Profile Set Usage

The Material Profile Set Usage concept applies to this entity.

Product Placement

The Product Placement concept applies to this entity as shown in Table 652.
IfcLocalPlacementIfcLocalPlacementRelative placement according to position and rotation relative to container.
IfcLocalPlacement Absolute placement according to position and rotation of world coordinate system.
IfcGridPlacement Placement according to grid intersection.

Table 652 — IfcPile Product Placement

Axis Geometry

The Axis Geometry concept applies to this entity as shown in Table 653.

Table 653 — IfcPile Axis Geometry

FootPrint Geometry

The FootPrint Geometry concept applies to this entity as shown in Table 654.
FootPrintGeometricCurveSet Any collection of points and curves representing the floor plan projection.
FootPrintAnnotation2D Any collection of points and curves, and additional hatching and text representing the floor plan projection.

Table 654 — IfcPile FootPrint Geometry

Body Geometry

The Body Geometry concept applies to this entity as shown in Table 655.

Table 655 — IfcPile Body Geometry

XSD Specification:

 <xs:element name="IfcPile" type="ifc:IfcPile" substitutionGroup="ifc:IfcBuildingElement" nillable="true"/>
 <xs:complexType name="IfcPile">
   <xs:extension base="ifc:IfcBuildingElement">
    <xs:attribute name="PredefinedType" type="ifc:IfcPileTypeEnum" use="optional"/>
    <xs:attribute name="ConstructionType" type="ifc:IfcPileConstructionEnum" use="optional"/>

EXPRESS Specification:

SUBTYPE OF IfcBuildingElement;
PredefinedType : OPTIONAL IfcPileTypeEnum;
ConstructionType : OPTIONAL IfcPileConstructionEnum;
CorrectPredefinedType : NOT EXISTS(PredefinedType) OR (PredefinedType <> IfcPileTypeEnum.USERDEFINED) OR ((PredefinedType = IfcPileTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcObject.ObjectType));
CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR ('IFCSTRUCTURALELEMENTSDOMAIN.IFCPILETYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));

Link to EXPRESS-G diagram EXPRESS-G diagram

Attribute Definitions:

PredefinedType : The predefined generic type of the pile according to function.
IFC4 CHANGE  Attribute made optional. Type information can be provided by IfcRelDefinesByType and IfcPileType.
ConstructionType : Deprecated.
IFC4 CHANGE  Material profile association capability by means of IfcRelAssociatesMaterial has been added. The attribute ConstructionType should not be used whenever its information can be provided by a material profile set, either associated with the IfcPile object or, if present, with a corresponding instance of IfcPileType.

Formal Propositions:

CorrectPredefinedType : Either the PredefinedType attribute is unset (e.g. because an IfcPileType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssigned : If this occurrence is defined by a type object, the latter has to be an IfcPileType.

Inheritance Graph:

GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
HasAssignments : SET OF IfcRelAssigns FOR RelatedObjects;
Nests : SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy : SET OF IfcRelNests FOR RelatingObject;
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy : SET OF IfcRelAggregates FOR RelatingObject;
Decomposes : SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcObject
ObjectType : OPTIONAL IfcLabel;
IsDeclaredBy : SET [0:1] OF IfcRelDefinesByObject FOR RelatedObjects;
Declares : SET OF IfcRelDefinesByObject FOR RelatingObject;
IsTypedBy : SET [0:1] OF IfcRelDefinesByType FOR RelatedObjects;
IsDefinedBy : SET OF IfcRelDefinesByProperties FOR RelatedObjects;
ENTITY IfcProduct
ObjectPlacement : OPTIONAL IfcObjectPlacement;
Representation : OPTIONAL IfcProductRepresentation;
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElement
Tag : OPTIONAL IfcIdentifier;
FillsVoids : SET [0:1] OF IfcRelFillsElement FOR RelatedBuildingElement;
ConnectedTo : SET OF IfcRelConnectsElements FOR RelatingElement;
IsInterferedByElements : SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements : SET OF IfcRelInterferesElements FOR RelatingElement;
HasProjections : SET OF IfcRelProjectsElement FOR RelatingElement;
ReferencedInStructures : SET OF IfcRelReferencedInSpatialStructure FOR RelatedElements;
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
HasCoverings : SET OF IfcRelCoversBldgElements FOR RelatingBuildingElement;
PredefinedType : OPTIONAL IfcPileTypeEnum;
ConstructionType : OPTIONAL IfcPileConstructionEnum;

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