The Bathroom Pod is not a structural element subject to fire loads; therefore the compliance to Fire-Resistance standard in not relevant but in exceptional cases. Therefore basic versions (both in concrete and steel boarded frame) have no fire rating.
In the case of the concrete pod (CBM), Fire resistance is calculable and can be achieved in two degrees: 30 minutes and 60 minutes, by upgrading the walls construction; for concrete pods by thickening the walls and using...