Index: src/Plugins/Wti/Wti.Data/Wti.Data.csproj
===================================================================
diff -u -rb9fb2479ca915755aa087e7898b9a78eb1e4f0c0 -rb08cd825acc24d8d7b0f5e802bf65efece7ee4be
--- src/Plugins/Wti/Wti.Data/Wti.Data.csproj	(.../Wti.Data.csproj)	(revision b9fb2479ca915755aa087e7898b9a78eb1e4f0c0)
+++ src/Plugins/Wti/Wti.Data/Wti.Data.csproj	(.../Wti.Data.csproj)	(revision b08cd825acc24d8d7b0f5e802bf65efece7ee4be)
@@ -40,7 +40,9 @@
       <Link>Properties\GlobalAssembly.cs</Link>
     </Compile>
     <Compile Include="PipingData.cs" />
+    <Compile Include="PipingFailureMechanism.cs" />
     <Compile Include="PipingOutput.cs" />
+    <Compile Include="PipingSurfaceLine.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="WtiProject.cs" />
   </ItemGroup>