IfcRelConnectsWithRealizingElements定义了两个元素之间的泛型关系，这两个元素需要通过进一步实现元素来实现该关系。
IfcRelConnectsWithRealizingElements是IfcRelConnectsElement的一种专门化，其中连接操作具有可用于实现或进一步限定关系的（一个或多个）实现元素的附加属性。它被定义为三元关系。
例如，它可用于描述一个元件与另一个元件的连接，其中该连接由诸如支架的“固定”元件实现。它也可用于描述将一个元件安装到另一个元件上，例如将主要设备安装到建筑工地和/或防振隔离器上的要求。
在IFC2x2中增加的新实体。
| # | Attribute | Type | Cardinality | Description | C |
|---|---|---|---|---|---|
| IfcRoot | |||||
| 1 | GlobalId | IfcGloballyUniqueId | [1:1] | Assignment of a globally unique identifier within the entire software world. | X |
| 2 | OwnerHistory | IfcOwnerHistory | [0:1] | 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. |
X |
| 3 | Name | IfcLabel | [0:1] | 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 | [0:1] | Optional description, provided for exchanging informative comments. | X |
| IfcRelationship | |||||
| IfcRelConnects | |||||
| IfcRelConnectsElements | |||||
| 5 | ConnectionGeometry | IfcConnectionGeometry | [0:1] | The geometric shape representation of the connection geometry that is provided in the object coordinate system of the RelatingElement (mandatory) and in the object coordinate system of the RelatedElement (optionally). | X |
| 6 | RelatingElement | IfcElement | [1:1] | Reference to a subtype of IfcElement that is connected by the connection relationship in the role of RelatingElement. | X |
| 7 | RelatedElement | IfcElement | [1:1] | Reference to a subtype of IfcElement that is connected by the connection relationship in the role of RelatedElement. | X |
| IfcRelConnectsWithRealizingElements | |||||
| 8 | RealizingElements | IfcElement | S[1:?] | Defines the elements that realize a connection relationship. | X |
| 9 | ConnectionType | IfcLabel | [0:1] | The type of the connection given for informal purposes, it may include labels, like 'joint', 'rigid joint', 'flexible joint', etc. | X |