I suppose that we are all well-aware of the fact that all buildings which are put up in our country must necessarily follow the requirements of the approved doc m. Also, our private houses need to follow these regulations. Namely, when it comes to sanitary conveniences in dwellings, the approved doc m specifies that reasonable provision shall be made in the entrance storey for sanitary conveniences or in the places where entrance storey contains no habitable rooms.
Also reasonable provision shall be made in either the entrance storey or principal storey. It needs to be noted, however, that in this paragraph of the approved doc m the entrance storey refers to the storey which contains the principal entrance and the principal storey refers to the storey nearest to the entrance storey which contains a habitable room, or if there are two such storeys equally nears, either such storey. I suppose that this requirement, as all requirements contained in the approved doc m, is easily comprehensible and applicable.