.BuildingSystems.HAM.Data.MaterialProperties.Thermal.Masea.PumiceConcrete .BuildingSystems.HAM.Data.MaterialProperties.Thermal.Masea.PumiceConcreterecord PumiceConcrete = BuildingSystems.HAM.Data.MaterialProperties.BaseClasses.MaterialThermalGeneral(id = 10, name = "Pumice concrete (Bimsbeton)", lambda = 0.14, c = 850, rho = 672);