Depending on the location distinguish individual (apartment), total (in institutions, in enterprises, in the barracks, hostels), public (on the streets, stadiums, in parks). Restrooms can be sanitation and recanalization. To the device and maintenance of latrines must meet the following hygienic requirements:
1. Washrooms need to build so that was a possibility of intestinal infections and intestinal worm and the emergence of flies. Sewage should not pollute the air, soil and water.
2. Latrines should be warm, bright, dry and comfortable.
3. Internal furnish of latrines must be made of material to support them in sufficient purity.
4. Latrines should be equipped with ventilation.
5. Not allowed direct message latrines with residential and office space (except sanitation, washing).
Answer the hygienic requirements washing, sanitation latrines. The receiver has a lavatory are toilets and urinals (public toilets), with runoff water lock that prevents the penetration into the premises of gases from the sewer network.
To wash bowl toilet water is supplied through the wash tank, which excludes the possibility of reverse suck dirty water in the water supply network (Fig. 1).

Fig. 1. Lavatory: 1 - with proryvnym tank; 2 - with a tap for washing of the water supply network.
the backlash-closet
Fig. 2. The backlash-toilet: 1 - exhaust channel; 2 - crumpled clay; 3 - brick.

The best tanks are located directly above the toilet: their volume and diameter of the pipe is more, they are better washed off the Cup and are less noisy. Wall sanitation latrines faced glazed or ceramic floor tiles or painted with oil paint. The floor is covered with ceramic tiles.
Of all types recanalizing latrines best is the backlash-closet (Fig. 2), which is arranged at the outer wall heated no more than a 2-storey building. From latrines sewage fall into waterproof cesspool (cm). To malodorous gases did not penetrate into the building, rowed supplied exhaust channel, which is displayed above the roof ridge and heated. In recanalizing households of cities, workers ' settlements and rural recanalizing settlements can get water closets with drawers, after using sleeps peat, ash or land (the contents of the drawers can be used for compost).
In places of temporary stay of people in a field deployment of troops, in expeditions can be applied field ditches depth of 0.6 m and width is 0.3 m Edges of ditches strengthened poles or boards. The pits 2-3 times a day covered with soil layer of 10 cm and disinfected with bleach.
The device and the contents of stationary and mobile public latrines in settlements shall be made in accordance with the Sanitary rules. In General and public latrines outdoor bowls and toilet bowls are placed in a separate cabin with doors which open outwards. Cabins are separated by a partition, not reaching 0.2 m to the floor, height of not less than 1.75 m, measured from the floor and supplied with hooks for clothes. At the entrance to the bathroom (in a special room or gateway) are installed wash-basins at the rate of 1 washbasin in 4 cabins.
Number of ceramic cups or bowls regulated depending on the number using the lavatory. At the enterprises the number of employees in a single shift, in accordance with CH 245-71 (Sanitary norms of planning industrial enterprises). In hostels 1 toilet and 1 urinal is normalized by 18 people in the men's toilets and 1 toilet for 12 people in the female.