using StructureHelperLogics.NdmCalculations.Primitives; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace StructureHelperLogics.NdmCalculations.Buckling { public interface IRCStiffnessLogic { (double Kc, double Ks) GetStiffnessCoeffitients(); } }