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StructureHelperLogics/NdmCalculations/Cracking/IAverageDiameterLogic.cs

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+using LoaderCalculator.Data.Ndms;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelperLogics.NdmCalculations.Cracking
+{
+    public interface IAverageDiameterLogic
+    {
+        IEnumerable<RebarNdm> Rebars { get; set; }
+        double GetAverageDiameter();
+    }
+}