Term paper - Topic: Water supply and sewerage of a residential building

  The course project is carried out in accordance with the assignment for the design of cold water supply of drinking quality and sewerage of a residential building, in which 81.6 people live according to the initial data. At the same time, it should be borne in mind that the building has the same type of floor plan and an unused basement located under the building.

The internal water supply network (B1) is designed to supply water to the consumer of drinking quality, the source is the household and drinking water supply system of the external networks, at the entrance to the building  we install a water supply unit (shut-off valves, check valve, pressure gauge, water meter, drainage valve, bypass line). The system is designed from galvanized steel water pipes according to GOST 3262-75. Apartment wiring is carried out from polyethylene pipes PN 25/

 The building is supplied with cold water from the city water supply network, shown on the general plan of the site. 

  The drainage of domestic wastewater from residential buildings is taken by gravity, into the street sewer network, from polyethylene pipes, the diameter is determined structurally. All water intakes are designed with hydraulic seals to prevent the penetration of unpleasant odors.

To prevent vacuum in the internal sewerage system (K1), all risers are equipped with ventilation in the form of the K1 riser above the roof in accordance with the requirements of SNiP 2.04.0 – 85*

Initial data for design:

1. Typical Floor                                                              Plan Variant Number 6
2. Number of floors                                                                                               4
3. Floor height (floor-to-floor) with ceiling thickness 0.3 m, m             3.2
4. Basement height (up to the floor of the first floor), m                                                    1.9
5. Number of the general plan option of site                                                                     3
6. Distance from the red line to building l1, m                                                    7
7. Distance from the building to the city sewer well A  l2, m     10
8. Diameter of the city water supply pipe, mm                                                 250
9. Diameter of the city sewerage pipe, mm                                                   300
10. The slope of the city sewer                                                          pipe is 0.007
11. Absolute elevation of the ground surface near the building, m                                   37.8
12. Absolute floor elevation of the first floor, m                                                  38.7
13. Absolute mark of the gutter of well A of the city sewerage, m             34.0
14. Depth of seasonal freezing of soil, m                                                     2.3
15. Warranty head Ngar., m                                                                               40
16. Average occupancy of apartments m, person/apartment                                             3,4