Index: Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilLayer.cs
===================================================================
diff -u -rec27d9f02dc27c2829ed45788fae7d5923d63d3d -r677ec9937ae7eff73a09bf937804ad22e0dc5a4b
--- Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilLayer.cs	(.../PipingSoilLayer.cs)	(revision ec27d9f02dc27c2829ed45788fae7d5923d63d3d)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Primitives/PipingSoilLayer.cs	(.../PipingSoilLayer.cs)	(revision 677ec9937ae7eff73a09bf937804ad22e0dc5a4b)
@@ -55,24 +55,24 @@
         public double Top { get; }
 
         /// <summary>
-        /// Gets or sets a value indicating whether or not the <see cref="PipingSoilLayer"/> is an aquifer.
+        /// Gets or sets a value indicating whether the <see cref="PipingSoilLayer"/> is an aquifer.
         /// </summary>
         public bool IsAquifer { get; set; }
 
         /// <summary>
-        /// Gets or sets the mean of the distrubtion for the volumic weight of the <see cref="PipingSoilLayer"/> below the phreatic level.
+        /// Gets or sets the mean of the distribution for the volumic weight of the <see cref="PipingSoilLayer"/> below the phreatic level.
         /// [kN/m³]
         /// </summary>
         public double BelowPhreaticLevelMean { get; set; }
 
         /// <summary>
-        /// Gets or sets the deviation of the distrubtion for the volumic weight of the <see cref="PipingSoilLayer"/> below the phreatic level.
+        /// Gets or sets the deviation of the distribution for the volumic weight of the <see cref="PipingSoilLayer"/> below the phreatic level.
         /// [kN/m³]
         /// </summary>
         public double BelowPhreaticLevelDeviation { get; set; }
 
         /// <summary>
-        /// Gets or sets the shift of the distrubtion for the volumic weight of the <see cref="PipingSoilLayer"/> below the phreatic level.
+        /// Gets or sets the shift of the distribution for the volumic weight of the <see cref="PipingSoilLayer"/> below the phreatic level.
         /// [kN/m³]
         /// </summary>
         public double BelowPhreaticLevelShift { get; set; }
@@ -139,7 +139,7 @@
                 return true;
             }
             var other = obj as PipingSoilLayer;
-            return other != null && Equals((PipingSoilLayer) obj);
+            return other != null && Equals(other);
         }
 
         public override int GetHashCode()