This option acceptable in cases where the bathroom is necessary to move to 3 – 4 m and the tap-off line hidden under the floor. In view of providing the necessary grade floor level will rise by only 10 – 15 cm, with the loss of which can still be put up. But if want to move a bathroom at a greater distance or to organize a new, proposed method is totally unacceptable. Indeed, the difference between the level of the drain of equipment and the entry point into pipe, which is already raised by at least 10 cm above the floor, hitting 30 – 40 cm, therefore, for the installation of the toilet, bath or shower will have to make the podium height of almost half a meter. It is unlikely that someone will arrange such a "design", in addition, there certain requirements to accommodate the height of sanitary equipment above floor level (see Table 2). Table 2. Height of installation of sanitary appliances Name of instrument installation height of the instrument from the floor, m in residential schools in Kindergarten Wash (up to the board) 0,8 0,7 0,6 Sinks and wash (to side) 0.85 0.85 0.85 cisterns to the toilet (to the bottom of the tank), low-lying 0.57 0.57 0 57 Urinals individual (to side) 0.65 0.5 0.45 Tolerance in size for all individual facing devices – 20 mm, for low-lying cisterns – 10 mm Forced removal household sewage in a situation where the dirty water from sanitary facilities and household appliances can not be allocated to sewers gravity (units are located at a considerable distance from the tower, below the level of its passage or at the same level, but can not provide the necessary slope outlet line), the only way to solve the problem is the use of pressure sewer system.