Index: Ringtoets/Common/src/Ringtoets.Common.Data/DikeProfiles/BreakWater.cs
===================================================================
diff -u -rfd7cb4da4164284049a3627b1d85f92e722d1814 -rd67d84b0725d8e7192f1b8e2649eab0a5b1dcb69
--- Ringtoets/Common/src/Ringtoets.Common.Data/DikeProfiles/BreakWater.cs	(.../BreakWater.cs)	(revision fd7cb4da4164284049a3627b1d85f92e722d1814)
+++ Ringtoets/Common/src/Ringtoets.Common.Data/DikeProfiles/BreakWater.cs	(.../BreakWater.cs)	(revision d67d84b0725d8e7192f1b8e2649eab0a5b1dcb69)
@@ -81,11 +81,7 @@
 
         public override int GetHashCode()
         {
-            unchecked
-            {
-                int hashCode = height.GetHashCode();
-                return (hashCode * 397) ^ (int) Type;
-            }
+            return 0;
         }
 
         public object Clone()
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/SoilProfile/MacroStabilityInwardsSoilProfile1D.cs
===================================================================
diff -u -r228ee54da56eded41bf81bba88cf54371f11d2bb -rd67d84b0725d8e7192f1b8e2649eab0a5b1dcb69
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/SoilProfile/MacroStabilityInwardsSoilProfile1D.cs	(.../MacroStabilityInwardsSoilProfile1D.cs)	(revision 228ee54da56eded41bf81bba88cf54371f11d2bb)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/SoilProfile/MacroStabilityInwardsSoilProfile1D.cs	(.../MacroStabilityInwardsSoilProfile1D.cs)	(revision d67d84b0725d8e7192f1b8e2649eab0a5b1dcb69)
@@ -148,10 +148,6 @@
             {
                 int hashCode = Bottom.GetHashCode();
                 hashCode = (hashCode * 397) ^ Name.GetHashCode();
-                foreach (MacroStabilityInwardsSoilLayer1D layer in layers)
-                {
-                    hashCode = (hashCode * 397) ^ layer.GetHashCode();
-                }
                 return hashCode;
             }
         }
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/SoilProfile/MacroStabilityInwardsSoilProfile2D.cs
===================================================================
diff -u -r228ee54da56eded41bf81bba88cf54371f11d2bb -rd67d84b0725d8e7192f1b8e2649eab0a5b1dcb69
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/SoilProfile/MacroStabilityInwardsSoilProfile2D.cs	(.../MacroStabilityInwardsSoilProfile2D.cs)	(revision 228ee54da56eded41bf81bba88cf54371f11d2bb)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/SoilProfile/MacroStabilityInwardsSoilProfile2D.cs	(.../MacroStabilityInwardsSoilProfile2D.cs)	(revision d67d84b0725d8e7192f1b8e2649eab0a5b1dcb69)
@@ -94,6 +94,7 @@
                 {
                     throw new ArgumentNullException(nameof(value));
                 }
+
                 name = value;
             }
         }
@@ -109,14 +110,17 @@
             {
                 return false;
             }
+
             if (ReferenceEquals(this, obj))
             {
                 return true;
             }
+
             if (obj.GetType() != GetType())
             {
                 return false;
             }
+
             return Equals((MacroStabilityInwardsSoilProfile2D) obj);
         }
 
@@ -125,15 +129,7 @@
             unchecked
             {
                 int hashCode = Name.GetHashCode();
-                foreach (MacroStabilityInwardsSoilLayer2D layer in layers)
-                {
-                    hashCode = (hashCode * 397) ^ layer.GetHashCode();
-                }
-                foreach (MacroStabilityInwardsPreconsolidationStress stress in PreconsolidationStresses)
-                {
-                    hashCode = (hashCode * 397) ^ stress.GetHashCode();
-                }
-                return hashCode;
+                return PreconsolidationStresses.Aggregate(hashCode, (currentHashCode, stress) => (currentHashCode * 397) ^ stress.GetHashCode());
             }
         }
 
@@ -156,6 +152,7 @@
             {
                 throw new ArgumentNullException(nameof(collection), string.Format(Resources.Error_Cannot_Construct_MacroStabilityInwardsSoilProfile_Without_Layers));
             }
+
             if (!collection.Any())
             {
                 throw new ArgumentException(Resources.Error_Cannot_Construct_MacroStabilityInwardsSoilProfile_Without_Layers);
Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsSoilLayerData.cs
===================================================================
diff -u -r228ee54da56eded41bf81bba88cf54371f11d2bb -rd67d84b0725d8e7192f1b8e2649eab0a5b1dcb69
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsSoilLayerData.cs	(.../MacroStabilityInwardsSoilLayerData.cs)	(revision 228ee54da56eded41bf81bba88cf54371f11d2bb)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Primitives/MacroStabilityInwardsSoilLayerData.cs	(.../MacroStabilityInwardsSoilLayerData.cs)	(revision d67d84b0725d8e7192f1b8e2649eab0a5b1dcb69)
@@ -268,12 +268,7 @@
         {
             unchecked
             {
-                int hashCode = StringComparer.InvariantCulture.GetHashCode(materialName);
-                hashCode = (hashCode * 397) ^ IsAquifer.GetHashCode();
-                hashCode = (hashCode * 397) ^ Color.GetHashCode();
-                hashCode = (hashCode * 397) ^ UsePop.GetHashCode();
-                hashCode = (hashCode * 397) ^ ShearStrengthModel.GetHashCode();
-                hashCode = (hashCode * 397) ^ AbovePhreaticLevel.GetHashCode();
+                int hashCode = AbovePhreaticLevel.GetHashCode();
                 hashCode = (hashCode * 397) ^ BelowPhreaticLevel.GetHashCode();
                 hashCode = (hashCode * 397) ^ Cohesion.GetHashCode();
                 hashCode = (hashCode * 397) ^ FrictionAngle.GetHashCode();
Index: Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilLayer.cs
===================================================================
diff -u -r686466dda6406ee2c7fb1f33faa60494878b1fc8 -rd67d84b0725d8e7192f1b8e2649eab0a5b1dcb69
--- Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilLayer.cs	(.../PipingSoilLayer.cs)	(revision 686466dda6406ee2c7fb1f33faa60494878b1fc8)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilLayer.cs	(.../PipingSoilLayer.cs)	(revision d67d84b0725d8e7192f1b8e2649eab0a5b1dcb69)
@@ -173,13 +173,10 @@
         {
             unchecked
             {
-                int hashCode = materialName?.GetHashCode() ?? 0;
-                hashCode = (hashCode * 397) ^ Top.GetHashCode();
-                hashCode = (hashCode * 397) ^ IsAquifer.GetHashCode();
+                int hashCode = Top.GetHashCode();
                 hashCode = (hashCode * 397) ^ BelowPhreaticLevel.GetHashCode();
                 hashCode = (hashCode * 397) ^ DiameterD70.GetHashCode();
                 hashCode = (hashCode * 397) ^ Permeability.GetHashCode();
-                hashCode = (hashCode * 397) ^ Color.GetHashCode();
                 return hashCode;
             }
         }
Index: Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilProfile.cs
===================================================================
diff -u -re318f8ad1ae9ff8fabdb362d27e3db320af91ac0 -rd67d84b0725d8e7192f1b8e2649eab0a5b1dcb69
--- Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilProfile.cs	(.../PipingSoilProfile.cs)	(revision e318f8ad1ae9ff8fabdb362d27e3db320af91ac0)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilProfile.cs	(.../PipingSoilProfile.cs)	(revision d67d84b0725d8e7192f1b8e2649eab0a5b1dcb69)
@@ -144,10 +144,6 @@
                 int hashCode = Bottom.GetHashCode();
                 hashCode = (hashCode * 397) ^ Name.GetHashCode();
                 hashCode = (hashCode * 397) ^ (int) SoilProfileSourceType;
-                foreach (PipingSoilLayer layer in layers)
-                {
-                    hashCode = (hashCode * 397) ^ layer.GetHashCode();
-                }
                 return hashCode;
             }
         }