Add rebar section logic

StructureHelperLogics/Models/Materials/Logics/IRebarSectionStrengthLogic.cs

@@ -0,0 +1,13 @@
+using StructureHelperCommon.Infrastructures.Interfaces;
+using StructureHelperCommon.Models;
+
+namespace StructureHelperLogics.Models.Materials
+{
+    public interface IRebarSectionStrengthLogic : ILogic
+    {
+        IRebarSection RebarSection { get; set; }
+        IShiftTraceLogger? TraceLogger { get; set; }
+
+        double GetRebarMaxTensileForce();
+    }
+}