.BuildingSystems.HAM.Data.MaterialProperties.Thermal.Concrete .BuildingSystems.HAM.Data.MaterialProperties.Thermal.Concreterecord Concrete = BuildingSystems.HAM.Data.MaterialProperties.BaseClasses.MaterialThermalGeneral(id = 1, name = "Concrete", lambda = 2.0, c = 1000.0, rho = 2000.0);