.BuildingSystems.HAM.Data.MaterialProperties.Thermal.Masea.WeatherResistantLayer .BuildingSystems.HAM.Data.MaterialProperties.Thermal.Masea.WeatherResistantLayerrecord WeatherResistantLayer = BuildingSystems.HAM.Data.MaterialProperties.BaseClasses.MaterialThermalGeneral(id = 13, name = "Weather resistant layer (Witterungsschutzbahn (sd=0,1m))", lambda = 2.3, c = 2300, rho = 130);