Index: dam engine/trunk/Xsds Liquid/DamInput.xsd
===================================================================
diff -u -r471 -r486
--- dam engine/trunk/Xsds Liquid/DamInput.xsd	(.../DamInput.xsd)	(revision 471)
+++ dam engine/trunk/Xsds Liquid/DamInput.xsd	(.../DamInput.xsd)	(revision 486)
@@ -3,6 +3,7 @@
 <xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
   <xs:include schemaLocation=".\DamLocation.xsd" />
   <xs:include schemaLocation=".\DamSurfaceLine.xsd" />
+  <xs:include schemaLocation=".\DamSoil.xsd" />
   <xs:complexType name="Input">
     <xs:sequence>
       <xs:element name="Locations">
@@ -19,6 +20,13 @@
           </xs:sequence>
         </xs:complexType>
       </xs:element>
+      <xs:element name="Soils">
+        <xs:complexType>
+          <xs:sequence>
+            <xs:element name="Soil" type="Soil" />
+          </xs:sequence>
+        </xs:complexType>
+      </xs:element>
     </xs:sequence>
     <xs:attribute name="DamProjectType" use="required">
       <xs:simpleType>
Index: dam engine/trunk/src/Deltares.DamEngine.Io/DamInput.cs
===================================================================
diff -u -r475 -r486
--- dam engine/trunk/src/Deltares.DamEngine.Io/DamInput.cs	(.../DamInput.cs)	(revision 475)
+++ dam engine/trunk/src/Deltares.DamEngine.Io/DamInput.cs	(.../DamInput.cs)	(revision 486)
@@ -26,6 +26,8 @@
         
         private SurfaceLine[] surfaceLinesField;
         
+        private InputSoils soilsField;
+        
         private InputDamProjectType damProjectTypeField;
         
         /// <remarks/>
@@ -51,6 +53,16 @@
         }
         
         /// <remarks/>
+        public InputSoils Soils {
+            get {
+                return this.soilsField;
+            }
+            set {
+                this.soilsField = value;
+            }
+        }
+        
+        /// <remarks/>
         [System.Xml.Serialization.XmlAttributeAttribute()]
         public InputDamProjectType DamProjectType {
             get {
@@ -1025,7 +1037,179 @@
     /// <remarks/>
     [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.6.1055.0")]
     [System.SerializableAttribute()]
+    [System.Diagnostics.DebuggerStepThroughAttribute()]
+    [System.ComponentModel.DesignerCategoryAttribute("code")]
     [System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true)]
+    public partial class InputSoils {
+        
+        private Soil soilField;
+        
+        /// <remarks/>
+        public Soil Soil {
+            get {
+                return this.soilField;
+            }
+            set {
+                this.soilField = value;
+            }
+        }
+    }
+    
+    /// <remarks/>
+    [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.6.1055.0")]
+    [System.SerializableAttribute()]
+    [System.Diagnostics.DebuggerStepThroughAttribute()]
+    [System.ComponentModel.DesignerCategoryAttribute("code")]
+    public partial class Soil {
+        
+        private string nameField;
+        
+        private double beddingAngleField;
+        
+        private bool beddingAngleFieldSpecified;
+        
+        private double diameterD70Field;
+        
+        private bool diameterD70FieldSpecified;
+        
+        private double permeabKxField;
+        
+        private bool permeabKxFieldSpecified;
+        
+        private double whitesConstantField;
+        
+        private bool whitesConstantFieldSpecified;
+        
+        private double diameterD90Field;
+        
+        private bool diameterD90FieldSpecified;
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlAttributeAttribute()]
+        public string Name {
+            get {
+                return this.nameField;
+            }
+            set {
+                this.nameField = value;
+            }
+        }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlAttributeAttribute()]
+        public double BeddingAngle {
+            get {
+                return this.beddingAngleField;
+            }
+            set {
+                this.beddingAngleField = value;
+            }
+        }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlIgnoreAttribute()]
+        public bool BeddingAngleSpecified {
+            get {
+                return this.beddingAngleFieldSpecified;
+            }
+            set {
+                this.beddingAngleFieldSpecified = value;
+            }
+        }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlAttributeAttribute()]
+        public double DiameterD70 {
+            get {
+                return this.diameterD70Field;
+            }
+            set {
+                this.diameterD70Field = value;
+            }
+        }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlIgnoreAttribute()]
+        public bool DiameterD70Specified {
+            get {
+                return this.diameterD70FieldSpecified;
+            }
+            set {
+                this.diameterD70FieldSpecified = value;
+            }
+        }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlAttributeAttribute()]
+        public double PermeabKx {
+            get {
+                return this.permeabKxField;
+            }
+            set {
+                this.permeabKxField = value;
+            }
+        }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlIgnoreAttribute()]
+        public bool PermeabKxSpecified {
+            get {
+                return this.permeabKxFieldSpecified;
+            }
+            set {
+                this.permeabKxFieldSpecified = value;
+            }
+        }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlAttributeAttribute()]
+        public double WhitesConstant {
+            get {
+                return this.whitesConstantField;
+            }
+            set {
+                this.whitesConstantField = value;
+            }
+        }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlIgnoreAttribute()]
+        public bool WhitesConstantSpecified {
+            get {
+                return this.whitesConstantFieldSpecified;
+            }
+            set {
+                this.whitesConstantFieldSpecified = value;
+            }
+        }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlAttributeAttribute()]
+        public double DiameterD90 {
+            get {
+                return this.diameterD90Field;
+            }
+            set {
+                this.diameterD90Field = value;
+            }
+        }
+        
+        /// <remarks/>
+        [System.Xml.Serialization.XmlIgnoreAttribute()]
+        public bool DiameterD90Specified {
+            get {
+                return this.diameterD90FieldSpecified;
+            }
+            set {
+                this.diameterD90FieldSpecified = value;
+            }
+        }
+    }
+    
+    /// <remarks/>
+    [System.CodeDom.Compiler.GeneratedCodeAttribute("xsd", "4.6.1055.0")]
+    [System.SerializableAttribute()]
+    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType=true)]
     public enum InputDamProjectType {
         
         /// <remarks/>
Index: dam engine/trunk/Xsds Liquid/DamSoil.xsd
===================================================================
diff -u
--- dam engine/trunk/Xsds Liquid/DamSoil.xsd	(revision 0)
+++ dam engine/trunk/Xsds Liquid/DamSoil.xsd	(revision 486)
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Created with Liquid XML Studio 1.0.8.0 (http://www.liquid-technologies.com) -->
+<xs:schema elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <xs:complexType name="Soil">
+    <xs:attribute name="Name" type="xs:string" use="required" />
+    <xs:attribute name="BeddingAngle" type="xs:double" use="optional" />
+    <xs:attribute name="DiameterD70" type="xs:double" use="optional" />
+    <xs:attribute name="PermeabKx" type="xs:double" use="optional" />
+    <xs:attribute name="WhitesConstant" type="xs:double" use="optional" />
+    <xs:attribute name="DiameterD90" type="xs:double" use="optional" />
+  </xs:complexType>
+</xs:schema>
\ No newline at end of file
Index: dam engine/trunk/src/Deltares.DamEngine.Data/Geotechnics/Soil.cs
===================================================================
diff -u -r452 -r486
--- dam engine/trunk/src/Deltares.DamEngine.Data/Geotechnics/Soil.cs	(.../Soil.cs)	(revision 452)
+++ dam engine/trunk/src/Deltares.DamEngine.Data/Geotechnics/Soil.cs	(.../Soil.cs)	(revision 486)
@@ -151,6 +151,44 @@
         }
         #endregion
 
+        #region Piping
+        /// <summary>
+        /// Bedding Angle (degree).
+        /// </summary>
+        /// <value>
+        /// The bedding angle.
+        /// </value>
+        public double BeddingAngle { get; set; } =  double.NaN;
+        /// <summary>
+        /// Diameter D70 (micrometer).
+        /// </summary>
+        /// <value>
+        /// The diameter D70.
+        /// </value>
+        public double DiameterD70 { get; set; } = double.NaN;
+        /// <summary>
+        /// Horizontal permeability (m/s)
+        /// </summary>
+        /// <value>
+        /// The permeab kx.
+        /// </value>
+        public double PermeabKx { get; set; } = double.NaN;
+        /// <summary>
+        /// Whites constant (-).
+        /// </summary>
+        /// <value>
+        /// The whites constant.
+        /// </value>
+        public double WhitesConstant { get; set; } = double.NaN;
+        /// <summary>
+        /// Diameter D90 (micrometer).
+        /// </summary>
+        /// <value>
+        /// The diameter D90.
+        /// </value>
+        public double DiameterD90 { get; set; } = double.NaN;
+        #endregion
+
         #region property AbovePhreaticLevel
 
         /// <summary>