Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsInput.cs
===================================================================
diff -u -rd619624819b7200ac55b357b0a0c54d198fc20e4 -ra3b8f844591b20947be3f6383e2112c0abe5dd10
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsInput.cs	(.../MacroStabilityInwardsInput.cs)	(revision d619624819b7200ac55b357b0a0c54d198fc20e4)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Data/MacroStabilityInwardsInput.cs	(.../MacroStabilityInwardsInput.cs)	(revision a3b8f844591b20947be3f6383e2112c0abe5dd10)
@@ -59,6 +59,8 @@
         private RoundedDouble penetrationLength;
         private RoundedDouble tangentLineZTop;
         private RoundedDouble tangentLineZBottom;
+        private MacroStabilityInwardsSurfaceLine surfaceLine;
+        private MacroStabilityInwardsStochasticSoilProfile stochasticSoilProfile;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="MacroStabilityInwardsInput"/> class.
@@ -114,17 +116,39 @@
         /// <summary>
         /// Gets or sets the surface line.
         /// </summary>
-        public MacroStabilityInwardsSurfaceLine SurfaceLine { get; set; }
+        public MacroStabilityInwardsSurfaceLine SurfaceLine
+        {
+            get
+            {
+                return surfaceLine;
+            }
+            set
+            {
+                surfaceLine = value;
+                SetSoilProfileUnderSurfaceLine();
+            }
+        }
 
         /// <summary>
         /// Gets or sets the stochastic soil model which is linked to the <see cref="StochasticSoilProfile"/>.
         /// </summary>
         public MacroStabilityInwardsStochasticSoilModel StochasticSoilModel { get; set; }
 
         /// <summary>
-        /// Gets or sets the profile which contains a 1 dimensional definition of soil layers with properties.
+        /// Gets or sets the profile which contains a definition of soil layers with properties.
         /// </summary>
-        public MacroStabilityInwardsStochasticSoilProfile StochasticSoilProfile { get; set; }
+        public MacroStabilityInwardsStochasticSoilProfile StochasticSoilProfile
+        {
+            get
+            {
+                return stochasticSoilProfile;
+            }
+            set
+            {
+                stochasticSoilProfile = value;
+                SetSoilProfileUnderSurfaceLine();
+            }
+        }
 
         /// <summary>
         /// Gets or sets the hydraulic boundary location from which to use the assessment level.
@@ -181,6 +205,18 @@
             }
         }
 
+        /// <summary>
+        /// Gets the profile which contains a 2 dimensional definition of soil layers with properties.
+        /// </summary>
+        public MacroStabilityInwardsSoilProfileUnderSurfaceLine SoilProfileUnderSurfaceLine { get; private set; }
+
+        private void SetSoilProfileUnderSurfaceLine()
+        {
+            SoilProfileUnderSurfaceLine = SurfaceLine != null && StochasticSoilProfile != null
+                                              ? MacroStabilityInwardsSoilProfileUnderSurfaceLineFactory.Create(StochasticSoilProfile.SoilProfile, SurfaceLine)
+                                              : null;
+        }
+
         #endregion
 
         #region settings