Add steel material saving

StructureHelperCommon/Models/Materials/Libraries/Factories/SteelFactorsFactory.cs

@@ -0,0 +1,26 @@
+using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Infrastructures.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace StructureHelperCommon.Models.Materials.Libraries.Factories
+{
+    public enum SteelFactorTypes
+    {
+        WorkCondition = 0,
+    }
+    public class SteelFactorsFactory
+    {
+        public static IMaterialSafetyFactor GetFactor(SteelFactorTypes factorType)
+        {
+            if (factorType == SteelFactorTypes.WorkCondition) { return WorkCondition(); }
+            else throw new StructureHelperException(ErrorStrings.ObjectTypeIsUnknown);
+        }
+
+        private static IMaterialSafetyFactor WorkCondition()
+        {
+            throw new NotImplementedException();
+        }
+    }
+}