Refactoring of beam shear calculation, add test for beam shea

StructureHelperLogics/Models/BeamShears/Factories/SectionEffectivenessFactorySH.cs

@@ -0,0 +1,47 @@
+using StructureHelperCommon.Infrastructures.Exceptions;
+
+namespace StructureHelperLogics.Models.BeamShears
+{
+    public class SectionEffectivenessFactorySH : ISectionEffectivenessFactory
+    {
+        public ISectionEffectiveness GetShearEffectiveness(BeamShearSectionType sectionType)
+        {
+            if (sectionType == BeamShearSectionType.Rectangle)
+            {
+                return GetRectangleEffectiveness();
+            }
+            else if (sectionType == BeamShearSectionType.Circle)
+            {
+                return GetCircleEffectiveness();
+            }
+            else
+            {
+                throw new StructureHelperException(ErrorStrings.ObjectTypeIsUnknownObj(sectionType));
+            }
+        }
+
+        private static ISectionEffectiveness GetCircleEffectiveness()
+        {
+            SectionEffectiveness sectionEffectiveness = new()
+            {
+                BaseShapeFactor = 1.5,
+                MaxCrackLengthRatio = 3,
+                MinCrackLengthRatio = 0.6,
+                ShapeFactor = 0.6
+            };
+            return sectionEffectiveness;
+        }
+
+        private static ISectionEffectiveness GetRectangleEffectiveness()
+        {
+            SectionEffectiveness sectionEffectiveness = new()
+            {
+                BaseShapeFactor = 1.5,
+                MaxCrackLengthRatio = 3,
+                MinCrackLengthRatio = 0.6,
+                ShapeFactor = 1
+            };
+            return sectionEffectiveness;
+        }
+    }
+}