.TransiEnt.Components.Heat.ThermalInsulation.ThermalInsulation_dynamic_3ways_2layer.medium_bottom_L1 .TransiEnt.Components.Heat.ThermalInsulation.ThermalInsulation_dynamic_3ways_2layer.medium_bottom_L1model medium_bottom_L1 = TransiEnt.Basics.Media.Solids.AeratedConcrete;