Add Joint from StructuralConnections (#422)

* Add Joint from StructuralConnections

* Resize cmap PNGs

Domains/2-DisciplinePhysical/StructuralPhysical/StructuralConnections.ecschema.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- ==================================================================================
+|  * Copyright (c) Bentley Systems, Incorporated. All rights reserved.
+|  * See LICENSE.md in the project root for license terms and full copyright notice.
+======================================================================================= -->
+<ECSchema schemaName="StructuralConnections" alias="sc" version="01.00.00" xmlns="http://www.bentley.com/schemas/Bentley.ECXML.3.2">
+    <ECSchemaReference name="BisCore" version="01.00.14" alias="bis" />
+    <ECSchemaReference name="CoreCustomAttributes" version="01.00.03" alias="CoreCA"/>
+    <ECSchemaReference name="BisCustomAttributes" version="01.00.00" alias="bisCA"/>
+    <ECSchemaReference name="StructuralPhysicalInterop" version="01.00.00" alias="spi"/>
+
+    <ECCustomAttributes>
+        <ProductionStatus xmlns="CoreCustomAttributes.01.00.03">
+            <SupportedUse>NotForProduction</SupportedUse>
+        </ProductionStatus>
+        <SchemaLayerInfo xmlns="BisCustomAttributes.01.00.00">
+            <Value>DisciplinePhysical</Value>
+        </SchemaLayerInfo>
+    </ECCustomAttributes>
+
+    <ECEntityClass typeName="Joint" displayLabel="Joint" description="A Joint is an area where two or more ends, surfaces or edges of individual members are attached.">
+        <BaseClass>bis:SpatialLocationElement</BaseClass>
+    </ECEntityClass>
+    <ECRelationshipClass typeName="JointConnectsStructuralElements" strength="referencing" modifier="None" description="A relationship that connects IStructuralElements to a Joint.">
+        <BaseClass>bis:ElementRefersToElements</BaseClass>
+        <Source multiplicity="(0..*)" roleLabel="connects to" polymorphic="true">
+            <Class class="Joint"/>
+        </Source>
+        <Target multiplicity="(2..*)" roleLabel="is connected by" polymorphic="true">
+            <Class class="spi:IStructuralElement"/>
+        </Target>        
+    </ECRelationshipClass>
+</ECSchema>

Domains/2-DisciplinePhysical/StructuralPhysical/StructuralConnections.remarks.md

@@ -0,0 +1,16 @@
+---
+noEditThisPage: true
+remarksTarget: StructuralConnections.ecschema.md
+---
+
+# StructuralConnections
+
+This schema contains classes that are used to model the real-world physical entities that comprise the structural systems of infrastructure.
+
+The following class-diagrams depict the main classes and relationships in the StructuralPhysical schema:
+
+![StructuralConnections classes](./media/StructuralConnections-classes.png)
+
+## Entity Classes
+
+### Joint

Domains/2-DisciplinePhysical/StructuralPhysical/StructuralPhysicalInterop.ecschema.xml

@@ -25,13 +25,15 @@ xmlns:xsi="http://www.bentley.com/schemas/Bentley.ECXML.3.2">
         </ECCustomAttributes>
     </ECEntityClass>
     <ECEntityClass typeName="IStructuralComponent" displayLabel="Structural Component Mixin" description ="A component is the smallest distinct structural entity.  It can't be broken down further." modifier ="Abstract">
+        <BaseClass>IStructuralElement</BaseClass>
         <ECCustomAttributes>
             <IsMixin xmlns="CoreCustomAttributes.01.00.00">
                 <AppliesToEntityClass>bis:PhysicalElement</AppliesToEntityClass>
             </IsMixin>
         </ECCustomAttributes>
     </ECEntityClass>
     <ECEntityClass typeName="IStructuralAssembly" displayLabel="Structural Assembly Mixin" description ="A single structural entity that is built from smaller parts known as components or other structural assemblies" modifier ="Abstract">
+        <BaseClass>IStructuralElement</BaseClass>
         <ECCustomAttributes>
             <IsMixin xmlns="CoreCustomAttributes.01.00.00">
                 <AppliesToEntityClass>bis:PhysicalElement</AppliesToEntityClass>
@@ -47,13 +49,4 @@ xmlns:xsi="http://www.bentley.com/schemas/Bentley.ECXML.3.2">
             <Class class="IStructuralComponent"/>
         </Target>
     </ECRelationshipClass>
-    <ECRelationshipClass typeName="StructuralAssemblyUsesMainComponent" displayLabel="Structural Assembly Uses Main Component" description="The relationship between a structural assembly and its Main component" modifier="None" strength="referencing">
-        <BaseClass>bis:ElementRefersToElements</BaseClass>
-        <Source multiplicity="(0..1)" roleLabel="uses main" polymorphic="true">
-            <Class class="IStructuralAssembly"/>
-        </Source>
-        <Target multiplicity="(1..1)" roleLabel="is used by" polymorphic="true">
-            <Class class="IStructuralComponent"/>
-        </Target>
-    </ECRelationshipClass>    
 </ECSchema>