[header] How to design a bathroom [title] Have a wet zone and a dry zone in the bathroom. [step] The wet zone is where the floor may get wet, such as by the tub or just outside the shower. The dry zone is where the floor will stay dry, such as by the door or the towel rack. 
Keep a good amount of space between the wet zone and the dry zone so you do not have to walk in wet spots when you use the bathroom. [substeps] For example, you may have a wet zone where the toilet is next to the shower and the sink.