Index: Riskeer/Piping/test/Riskeer.Piping.Data.Test/PipingCalculationScenarioExtensionsTest.cs
===================================================================
diff -u -r7f69931abed072f3687e3781f7a07bfa800283bb -r87e561d5a754af1b28d65e61e8395b70b9e4f218
--- Riskeer/Piping/test/Riskeer.Piping.Data.Test/PipingCalculationScenarioExtensionsTest.cs	(.../PipingCalculationScenarioExtensionsTest.cs)	(revision 7f69931abed072f3687e3781f7a07bfa800283bb)
+++ Riskeer/Piping/test/Riskeer.Piping.Data.Test/PipingCalculationScenarioExtensionsTest.cs	(.../PipingCalculationScenarioExtensionsTest.cs)	(revision 87e561d5a754af1b28d65e61e8395b70b9e4f218)
@@ -37,7 +37,7 @@
         public void IsSurfaceLineIntersectionWithReferenceLineInSection_SurfaceLineNull_ReturnsFalse()
         {
             // Setup
-            var calculation = new TestPipingCalculation();
+            var calculation = new TestPipingCalculationScenario();
 
             // Call
             bool intersects = calculation.IsSurfaceLineIntersectionWithReferenceLineInSection(Enumerable.Empty<Segment2D>());
@@ -67,7 +67,7 @@
                 new Point2D(10.0, 0.0)
             });
 
-            var calculation = new TestPipingCalculation
+            var calculation = new TestPipingCalculationScenario
             {
                 InputParameters =
                 {
@@ -76,14 +76,14 @@
             };
 
             // Call
-            TestDelegate call = () => calculation.IsSurfaceLineIntersectionWithReferenceLineInSection(Enumerable.Empty<Segment2D>());
+            void Call() => calculation.IsSurfaceLineIntersectionWithReferenceLineInSection(Enumerable.Empty<Segment2D>());
 
             // Assert
-            Assert.Throws<InvalidOperationException>(call);
+            Assert.Throws<InvalidOperationException>(Call);
         }
 
         [Test]
-        public void IsSurfaceLineIntersectionWithReferenceLineInSection_SurfaceLineIntersectsReferenceline_ReturnsTrue()
+        public void IsSurfaceLineIntersectionWithReferenceLineInSection_SurfaceLineIntersectsReferenceLine_ReturnsTrue()
         {
             // Setup
             var surfaceLine = new PipingSurfaceLine(string.Empty)
@@ -103,7 +103,7 @@
                 new Point2D(10.0, 0.0)
             });
 
-            var calculation = new TestPipingCalculation
+            var calculation = new TestPipingCalculationScenario
             {
                 InputParameters =
                 {
@@ -121,7 +121,7 @@
         }
 
         [Test]
-        public void IsSurfaceLineIntersectionWithReferenceLineInSection_SurfaceLineDoesNotIntersectReferenceline_ReturnsFalse()
+        public void IsSurfaceLineIntersectionWithReferenceLineInSection_SurfaceLineDoesNotIntersectReferenceLine_ReturnsFalse()
         {
             // Setup
             var surfaceLine = new PipingSurfaceLine(string.Empty)
@@ -141,7 +141,7 @@
                 new Point2D(20.0, 0.0)
             });
 
-            var calculation = new TestPipingCalculation
+            var calculation = new TestPipingCalculationScenario
             {
                 InputParameters =
                 {
Index: Riskeer/Piping/test/Riskeer.Piping.Data.TestUtil/TestPipingCalculationScenario.cs
===================================================================
diff -u -rc069d025d589b0d59947643ca92ff720e3374286 -r87e561d5a754af1b28d65e61e8395b70b9e4f218
--- Riskeer/Piping/test/Riskeer.Piping.Data.TestUtil/TestPipingCalculationScenario.cs	(.../TestPipingCalculationScenario.cs)	(revision c069d025d589b0d59947643ca92ff720e3374286)
+++ Riskeer/Piping/test/Riskeer.Piping.Data.TestUtil/TestPipingCalculationScenario.cs	(.../TestPipingCalculationScenario.cs)	(revision 87e561d5a754af1b28d65e61e8395b70b9e4f218)
@@ -20,13 +20,14 @@
 // All rights reserved.
 
 using System;
+using Core.Common.Base.Data;
 
 namespace Riskeer.Piping.Data.TestUtil
 {
     /// <summary>
     /// Piping calculation scenario that can be used for testing.
     /// </summary>
-    public class TestPipingCalculationScenario : TestPipingCalculation
+    public class TestPipingCalculationScenario : TestPipingCalculation, IPipingCalculationScenario<PipingInput>
     {
         /// <summary>
         /// Creates a new instance of <see cref="TestPipingCalculationScenario"/> with default <see cref="PipingInput"/>.
@@ -42,5 +43,9 @@
         /// <exception cref="ArgumentNullException">Thrown when <paramref name="pipingInput"/>
         /// is <c>null</c>.</exception>
         public TestPipingCalculationScenario(PipingInput pipingInput, bool hasOutput = false) : base(pipingInput, hasOutput) {}
+
+        public bool IsRelevant { get; set; }
+        
+        public RoundedDouble Contribution { get; set; }
     }
 }
\ No newline at end of file