Index: src/Plugins/Wti/Wti.Calculation/Piping/PipingCalculationException.cs
===================================================================
diff -u -r5fc71a385897af92ccb092f2f969b5709afab85a -r325410362b50750d3c291d19c1526799c9b1c583
--- src/Plugins/Wti/Wti.Calculation/Piping/PipingCalculationException.cs	(.../PipingCalculationException.cs)	(revision 5fc71a385897af92ccb092f2f969b5709afab85a)
+++ src/Plugins/Wti/Wti.Calculation/Piping/PipingCalculationException.cs	(.../PipingCalculationException.cs)	(revision 325410362b50750d3c291d19c1526799c9b1c583)
@@ -2,8 +2,34 @@
 
 namespace Wti.Calculation.Piping
 {
+    /// <summary>
+    /// Exception thrown when something went wrong in the <see cref="PipingCalculation"/>
+    /// </summary>
     public class PipingCalculationException : Exception
     {
-        public PipingCalculationException(string message) : base(message) {}
+        /// <summary>
+        /// Initializes a new instance of the <see cref="PipingCalculationException"/> class.
+        /// </summary>
+        public PipingCalculationException()
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="PipingCalculationException"/> class 
+        /// with a specified error message.
+        /// </summary>
+        /// <param name="message">The message that describes the error.</param>
+        public PipingCalculationException(string message) : base (message)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the System.Exception class with a specified error message 
+        /// and a reference to the inner exception that is the cause of this exception.
+        /// </summary>
+        /// <param name="message">The error message that explains the reason for the exception.</param>
+        /// <param name="innerException">The exception that is the cause of the current exception, or a 
+        /// null reference if no inner exception is specified.</param>
+        public PipingCalculationException(string message, Exception innerException) : base(message, innerException) {}
     }
 }
\ No newline at end of file