Carbon Fiber Material was Added

StructureHelperCommon/Models/Forces/DesignForcePair.cs

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+using StructureHelperCommon.Infrastructures.Enums;
+using StructureHelperCommon.Models.Shapes;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperCommon.Models.Forces
+{
+    public class DesignForcePair : IDesignForcePair
+    {
+        public string Name { get; set; }
+        public IPoint2D ForcePoint { get; set; }
+        public bool SetInGravityCenter { get; set; }
+        public LimitStates LimitState { get; set; }
+        public IForceTuple LongForceTuple { get; set; }
+        public IForceTuple FullForceTuple { get; set; }
+
+        public DesignForcePair()
+        {
+            LongForceTuple = new ForceTuple();
+            FullForceTuple = new ForceTuple();
+        }
+
+        public IForceCombinationList GetCombinations()
+        {
+            throw new NotImplementedException();
+        }
+
+        public object Clone()
+        {
+            throw new NotImplementedException();
+        }
+    }
+}